Coal face tamping top breaking device

Abstract

A coal face tamping top breaking device comprises a top supporting beam, a base supporting seat, an extension beam, an extension seat, a first telescopic part, a second telescopic part and a tamping part, the top supporting beam is rotationally connected with the extension beam, the base supporting seat is rotationally connected with the extension seat, the first telescopic part is arranged between the top supporting beam and the base supporting seat, and the second telescopic part is arranged between the extension beam and the extension seat. The tamping part is arranged on the extension seat, when the tamping part works on the top plate, the tamping part applies acting force to the extension seat, the second telescopic part connected with the extension seat does not apply acting force pointing to the top plate to the extension beam, the collapse risk of the top plate in contact with the extension beam is weakened, the top supporting beam is rotationally connected with the extension beam, and the bottom supporting base is rotationally connected with the extension seat; the extension base and the extension beam cannot apply acting force pointing to the top plate to the top supporting beam and the bottom supporting base, the top supporting beam forms stable supporting force on the top plate on one side of the top supporting beam, the collapse risk of the top plate making contact with the top supporting beam is reduced, and the safety risk of top caving operation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining working face roof breaking, in particular to a coal mining working face roof breaking device. Background Art

[0002] Roof management in the goaf of two lanes in a fully mechanized mining face has always been a challenge in underground coal mine management. Untimely roof collapse is common, posing a safety hazard to the mining face. The article "Techniques for Controlling Untimely Roof Collapse in Goafs of Two Lanes in Fully Mechanized Mining Faces" analyzes the causes of this untimely roof collapse. Article 105 of the Coal Mine Safety Regulations stipulates that when roof collapse is used in a coal mining face, timely roof caving must be performed. If the roof does not collapse or the roof overhang distance exceeds the specified operating regulations, mining must be halted and manual forced roof caving or other measures must be implemented to address the situation.

[0003] The Chinese utility model with authorization announcement number CN222025802U discloses a crawler-type unit bracket with integrated anchor breaking function, including a base, a crawler assembly is provided on both sides of the base, the crawler assembly includes a track plate, a guide cylinder, and a connecting seat, and a lifting cylinder and a guide cylinder corresponding to the guide cylinder and the connecting seat are provided on the two side walls of the base, two columns are provided on the upper surface of the bottom plate of the base, a top beam is provided on the top of the column, a mounting seat and a mounting plate are provided at both ends of the base, and an anchor breaking mechanical arm is provided on the mounting seat. During the top caving operation, the top beam is first used to protect the top plate on one side from collapsing, and then the anchor breaking mechanical arm is used to caving the top plate on the other side. When the anchor breaking mechanical arm is in operation, a force of constantly changing magnitude and direction is applied to the mounting seat, and the force is transmitted to the top beam in turn through the base and the columns, so that the top beam forms a force of constantly changing magnitude and direction on the top plate it supports, resulting in an increased risk of top plate collapse on one side of the top beam, which increases the safety risk of the top caving operation. Summary of the Invention

[0004] In view of this, in order to address the above-mentioned shortcomings, it is necessary to propose a coal mining face ramming and roof breaking device with high safety.

[0005] A tamping and roof-breaking device for a coal mining working face comprises a top supporting beam, a support base, an extension beam, an extension seat, a first telescopic member, a second telescopic member, and a tamping member. The top supporting beam is rotatably connected to the extension beam, the support base is rotatably connected to the extension seat, a first telescopic member is provided between the top supporting beam and the support base, the upper end of the first telescopic member is rotatably connected to the top supporting beam, the lower end of the first telescopic member is rotatably connected to the support base, a second telescopic member is provided between the extension beam and the extension seat, the upper end of the second telescopic member is rotatably connected to the extension beam, the lower end of the second telescopic member is rotatably connected to the extension seat, and the tamping member is provided on the extension seat.

[0006] Preferably, the coal mining working face ramming and breaking top device includes a connecting rod assembly, and the connecting rod assembly includes a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod. The first connecting rod is fixed on the support base, the first end of the second connecting rod is rotatably connected to the support top beam, the second end of the second connecting rod is rotatably connected to the first end of the third connecting rod, the second end of the third connecting rod is rotatably connected to the first end of the first connecting rod, the third end of the second connecting rod is located between the first end of the second connecting rod and the second end of the second connecting rod, the third end of the second connecting rod is rotatably connected to the first end of the fourth connecting rod, and the second end of the fourth connecting rod is rotatably connected to the second end of the first connecting rod.

[0007] Preferably, two first telescopic members are provided on both sides of the supporting top beam and the supporting base.

[0008] Preferably, a second telescopic member is provided on each side of the extension beam and the extension seat.

[0009] Preferably, the coal mining working face tamping and roof breaking device includes a conversion assembly, and the conversion assembly includes a first base, a second base, a slide, and a support. The first base is slidably connected to the first end of the slide, and the second base is slidably connected to the second end of the slide. The third end of the slide is located between the first end and the second end of the slide, and the third end of the slide is rotatably connected to the support. The support is provided on an extension seat, and the lower end of the second telescopic member is rotatably connected to the first base. The tamping member is provided on the second base, and the second base is slidably connected to the extension seat.

[0010] Preferably, the conversion assembly includes a spring, one end of the spring is connected to the extension seat, and the other end of the spring is connected to the first end or the second end of the slide.

[0011] Preferably, the tamping member includes a turntable, a first arm tube, a second arm tube, a third arm tube, and a tamping head. The tamping head is arranged at the upper end of the third arm tube, the lower end of the third arm tube is embedded in the upper end of the second arm tube, the third arm tube is slidingly connected relative to the second arm tube, the lower end of the second arm tube is embedded in the upper end of the first arm tube, the second arm tube is slidingly connected relative to the first arm tube, and the lower end of the first arm tube is hinged to the turntable.

[0012] Preferably, the tamping member includes a third telescopic member, and both ends of the third telescopic member are hinged to the turntable and the first arm tube respectively.

[0013] Preferably, the tamping member includes a fourth telescopic member and a fifth telescopic member, the two ends of the fourth telescopic member are respectively fixedly connected to the first arm tube and the second arm tube, and the two ends of the fifth telescopic member are respectively fixedly connected to the second arm tube and the third arm tube.

[0014] Preferably, the tamping member includes a sixth telescopic member, both ends of the sixth telescopic member are respectively hinged to the third arm tube and the tamping head, and the tamping head is hinged to the third arm tube.

[0015] Beneficial effects: When the ramming piece operates on the top plate, the ramming piece applies a force to the extension seat, and the second telescopic piece connected to the extension seat will not apply a force to the extension beam directed toward the top plate, thereby weakening the risk of collapse of the top plate in contact with the extension beam. The supporting top beam is rotatably connected to the extension beam, and the supporting base is rotatably connected to the extension seat. The extension seat and the extension beam cannot apply a force to the supporting top beam and the supporting base directed toward the top plate. The supporting top beam forms a stable supporting force on the top plate on one side of it, thereby reducing the risk of collapse of the top plate in contact with the supporting top beam and reducing the safety risk of the top release operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the coal mining face ramming and roof breaking device.

[0017] Figure 2 This is a top view of the coal mining face ramming and roof breaking device.

[0018] Figure 3 Schematic diagram of the structure of the conversion component.

[0019] Figure 4 Schematic diagram of the structure of the tamping member.

[0020] In the figure: top plate 10, supporting top beam 20, supporting base 30, extension beam 40, extension base 50, telescopic member 60, tamping member 70, turntable 71, first arm tube 72, second arm tube 73, third arm tube 74, tamping head 75, connecting rod assembly 80, first connecting rod 81, second connecting rod 82, third connecting rod 83, fourth connecting rod 84, conversion assembly 90, first base 91, second base 92, slide plate 93, support 94, spring 95. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] See also Figure 1 and Figure 2An embodiment of the present invention provides a ramming and roof breaking device for a coal mining working face, comprising a top support beam 20, a support base 30, an extension beam 40, an extension seat 50, a first telescopic member 60, a second telescopic member 60, and a ramming member 70. The top support beam 20 is rotatably connected to the extension beam 40, the support base 30 is rotatably connected to the extension seat 50, a first telescopic member 60 is provided between the top support beam 20 and the support base 30, the upper end of the first telescopic member 60 is rotatably connected to the top support beam 20, the lower end of the first telescopic member 60 is rotatably connected to the support base 30, a second telescopic member is provided between the extension beam 40 and the extension seat 50, the upper end of the second telescopic member 60 is rotatably connected to the extension beam 40, the lower end of the second telescopic member 60 is rotatably connected to the extension seat 50, and the ramming member 70 is provided on the extension seat 50.

[0023] Exemplarily, the front end of the supporting top beam 20 is a free end, the rear end of the supporting top beam 20 is hinged to the front end of the extension beam 40, the rear end of the extension beam 40 is a free end, the front end of the supporting base 30 is a free end, the rear end of the supporting base 30 is hinged to the front end of the extension seat 50, and the rear end of the extension seat 50 is a free end.

[0024] Exemplarily, the first telescopic member 60 is hinged to both the top support beam 20 and the base support seat 30 , and the second telescopic member 60 is hinged to both the extension beam 40 and the extension seat 50 .

[0025] Beneficial effect: When the ramming member 70 operates on the top plate 10, the ramming member 70 applies a force to the extension seat 50, and the second telescopic member 60 connected to the extension seat 50 will not apply a force directed to the top plate 10 to the extension beam 40, thereby weakening the risk of collapse of the top plate 10 in contact with the extension beam 40. The supporting top beam 20 is rotatably connected to the extension beam 40, and the supporting base 30 is rotatably connected to the extension seat 50. The extension seat 50 and the extension beam 40 cannot apply a force directed to the top plate 10 to the supporting top beam 20 and the supporting base 30. The supporting top beam 20 forms a stable supporting force for the top plate 10 on one side thereof, thereby reducing the risk of collapse of the top plate 10 in contact with the supporting top beam 20 and reducing the safety risk of the top lowering operation.

[0026] See also Figure 1 and Figure 2 Furthermore, the ramming and breaking top device of the coal mining working face includes a connecting rod assembly 80, and the connecting rod assembly 80 includes a first connecting rod 81, a second connecting rod 82, a third connecting rod 83, and a fourth connecting rod 84. The first connecting rod 81 is fixed on the support base 30, and the first end of the second connecting rod 82 is rotatably connected to the support top beam 20, the second end of the second connecting rod 82 is rotatably connected to the first end of the third connecting rod 83, the second end of the third connecting rod 83 is rotatably connected to the first end of the first connecting rod 81, the third end of the second connecting rod 82 is located between the first end of the second connecting rod 82 and the second end of the second connecting rod 82, the third end of the second connecting rod 82 is rotatably connected to the first end of the fourth connecting rod 84, and the second end of the fourth connecting rod 84 is rotatably connected to the second end of the first connecting rod 81.

[0027] See also Figure 1 and Figure 2 Furthermore, two first telescopic members 60 are respectively provided on both sides of the supporting top beam 20 and the supporting base 30 .

[0028] See also Figure 1 and Figure 2 Furthermore, a second telescopic member 60 is provided on both sides of the extension beam 40 and the extension seat 50 .

[0029] See also Figure 3 Furthermore, the coal mining working face tamping and roof breaking device includes a conversion assembly 90, which includes a first base 91, a second base 92, a slide 93, and a support 94. The first base 91 is slidably connected to the first end of the slide 93, the second base 92 is slidably connected to the second end of the slide 93, the third end of the slide 93 is located between the first end and the second end of the slide 93, the third end of the slide 93 is rotatably connected to the support 94, the support 94 is provided on the extension seat 50, the lower end of the second telescopic member 60 is rotatably connected to the first base 91, the tamping member 70 is provided on the second base 92, and the second base 92 is slidably connected to the extension seat 50.

[0030] In one embodiment, the ramming and breaking roof device of the coal mining working face includes a column ball, which is installed at the upper and lower ends of the telescopic part 60. Ball sockets are provided on the supporting top beam 20, the supporting base 30, the extension beam 40, and the first base 91. The column ball and the ball socket are rotatably matched. The column ball and the ball socket are both spherical. The column ball is embedded in the ball socket. The ball socket is larger than a hemisphere. The installation method of the column ball on the top beam or the base is a conventional structure and will not be described in detail.

[0031] See also Figure 3 Furthermore, the conversion assembly 90 includes a spring 95 , one end of the spring 95 is connected to the extension seat 50 , and the other end of the spring 95 is connected to the first end or the second end of the slide 93 .

[0032] Exemplarily, a spring 95 is provided at the first end or the second end of the slide plate 93. The first base 91 and the second base 92 both lean against the slide plate 93.

[0033] When the ramming member 70 is operating, the ramming member 70 applies a force to the second base 92, and transmits it to the extension beam 40 in sequence through the slide plate 93, the first base 91, and the second telescopic member 60, converting the harmful energy of the ramming member 70 into beneficial energy that the extension beam 40 uses to pre-destroy the top plate 10 it contacts.

[0034] In one embodiment, in the case where two second telescopic members 60 are provided, the first base 91 is only connected to one second telescopic member 60 .

[0035] For example, in a case where there are only two first telescopic members 60 and only one second telescopic member 60 , the first telescopic member 60 and the two second telescopic members 60 are not coplanar.

[0036] For example, in a case where there are only two first telescopic members 60 and only one second telescopic member 60 , the connecting rod assembly 80 is not coplanar with the two first telescopic members 60 .

[0037] See also Figure 4 Furthermore, the tamping member 70 includes a turntable 71, a first arm tube 72, a second arm tube 73, a third arm tube 74, and a tamping head 75. The tamping head 75 is arranged at the upper end of the third arm tube 74, the lower end of the third arm tube 74 is embedded in the upper end of the second arm tube 73, the third arm tube 74 is slidably connected relative to the second arm tube 73, the lower end of the second arm tube 73 is embedded in the upper end of the first arm tube 72, the second arm tube 73 is slidably connected relative to the first arm tube 72, and the lower end of the first arm tube 72 is hinged to the turntable 71.

[0038] For example, the turntable 71 is slidably connected to the extension base 50. The first arm 72, the second arm 73, and the third arm 74 preferably have rectangular cross-sections. The first arm 72, the second arm 73, and the third arm 74 slide relative to each other, and the tamping head 75 impacts and destroys the roof 10. The area of the roof 10 corresponding to the tamping head 75 is the destruction zone, the area of the roof 10 corresponding to the extension beam 40 is the pre-break zone, and the area of the roof 10 corresponding to the support beam 20 is the safe zone.

[0039] For example, the turntable 71 is rotatably connected to the second base 92 via a bearing. A first gear is mounted on the annular wall of the bearing. The motor is mounted on the extension base 50, and the first gear meshes with a second gear mounted on the output end of the motor. When a force is applied to the turntable 71, the second base 92 will shift, cushioning the impact force on the bearing. This reduces the risk of bearing damage compared to a case where the bearing is directly mounted on the extension base 50.

[0040] See also Figure 4 Furthermore, the tamping member 70 includes a third telescopic member 60 , and both ends of the third telescopic member 60 are hinged to the turntable 71 and the first arm tube 72 respectively.

[0041] See also Figure 4 Furthermore, the tamping member 70 includes a fourth telescopic member 60 and a fifth telescopic member 60. The two ends of the fourth telescopic member 60 are fixedly connected to the first arm tube 72 and the second arm tube 73 respectively, and the two ends of the fifth telescopic member 60 are fixedly connected to the second arm tube 73 and the third arm tube 74 respectively.

[0042] See also Figure 4 Furthermore, the tamping member 70 includes a sixth telescopic member 60 , both ends of which are hinged to the third arm tube 74 and the tamping head 75 , respectively, and the tamping head 75 is hinged to the third arm tube 74 .

[0043] Illustratively, the fifth telescopic member 60 and the fourth telescopic member 60 are respectively disposed on both sides of the second arm tube 73 .

[0044] Exemplarily, the first telescopic member 60, the second telescopic member 60, the third telescopic member 60, the fourth telescopic member 60, the fifth telescopic member 60, and the sixth telescopic member 60 are all oil cylinders. There are two third telescopic members 60, which are arranged on both sides of the first arm tube 72. There are two fourth telescopic members 60, which are arranged on both sides of the first arm tube 72 and the second arm tube 73. The two fourth telescopic members 60 provide guidance for the relative sliding of the first arm tube 72 and the second arm tube 73, which can reduce the friction between the first arm tube 72 and the second arm tube 73. There are two fifth telescopic members 60, which are arranged on both sides of the second arm tube 73 and the third arm tube 74. The two fifth telescopic members 60 provide guidance for the relative sliding of the second arm tube 73 and the third arm tube 74, which can reduce the friction between the second arm tube 73 and the third arm tube 74. The tamping member 70 adopts multi-stage telescopic members 60 and multi-stage arm tubes, which have obvious buffering effect, reduce the impact force borne by the bearings, and reduce the possibility of bearing damage.

[0045] The steps in the method of the embodiment of the present invention can be adjusted in sequence, combined, or deleted according to actual needs.

[0046] The modules or units in the apparatus according to the embodiment of the present invention may be combined, divided or deleted according to actual needs.

[0047] The above disclosure is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A coal mining face ramming and roof breaking device, characterized by: It includes a supporting top beam, a supporting base, an extension beam, an extension seat, a first telescopic member, a second telescopic member, and a tamping member. The supporting top beam is rotatably connected to the extension beam, the supporting base is rotatably connected to the extension seat, a first telescopic member is provided between the supporting top beam and the supporting base, the upper end of the first telescopic member is rotatably connected to the supporting top beam, the lower end of the first telescopic member is rotatably connected to the supporting base, a second telescopic member is provided between the extension beam and the extension seat, the upper end of the second telescopic member is rotatably connected to the extension beam, the lower end of the second telescopic member is rotatably connected to the extension seat, and the tamping member is provided on the extension seat.

2. The coal mining face ramming and roof breaking device according to claim 1, characterized in that: The coal mining working face ramming and breaking top device includes a connecting rod assembly, and the connecting rod assembly includes a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod. The first connecting rod is fixed on the support base, the first end of the second connecting rod is rotatably connected to the support top beam, the second end of the second connecting rod is rotatably connected to the first end of the third connecting rod, the second end of the third connecting rod is rotatably connected to the first end of the first connecting rod, the third end of the second connecting rod is located between the first end of the second connecting rod and the second end of the second connecting rod, the third end of the second connecting rod is rotatably connected to the first end of the fourth connecting rod, and the second end of the fourth connecting rod is rotatably connected to the second end of the first connecting rod.

3. The coal mining face ramming and roof breaking device according to claim 1, characterized in that: Two first telescopic members are respectively provided on both sides of the supporting top beam and the supporting base.

4. The coal mining face ramming and roof breaking device according to claim 1, characterized in that: A second telescopic member is provided on each side of the extension beam and the extension seat.

5. The coal mining face ramming and roof breaking device according to claim 1, characterized in that: The coal mining working face tamping and roof breaking device includes a conversion assembly, which includes a first base, a second base, a slide, and a support. The first base is slidably connected to the first end of the slide, the second base is slidably connected to the second end of the slide, the third end of the slide is located between the first end and the second end of the slide, the third end of the slide is rotatably connected to the support, the support is provided on the extension seat, the lower end of the second telescopic member is rotatably connected to the first base, the tamping member is provided on the second base, and the second base is slidably connected to the extension seat.

6. The coal mining face ramming and roof breaking device according to claim 5, characterized in that: The conversion assembly includes a spring, one end of the spring is connected to the extension seat, and the other end of the spring is connected to the first end or the second end of the slide.

7. The coal mining face ramming and roof breaking device according to claim 1, characterized in that: The tamping member includes a turntable, a first arm tube, a second arm tube, a third arm tube, and a tamping head. The tamping head is arranged at the upper end of the third arm tube. The lower end of the third arm tube is embedded in the upper end of the second arm tube. The third arm tube is slidably connected relative to the second arm tube. The lower end of the second arm tube is embedded in the upper end of the first arm tube. The second arm tube is slidably connected relative to the first arm tube. The lower end of the first arm tube is hinged to the turntable.

8. The coal mining face ramming and roof breaking device according to claim 7, characterized in that: The tamping member includes a third telescopic member, and two ends of the third telescopic member are respectively hinged to the turntable and the first arm tube.

9. The coal mining face ramming and roof breaking device according to claim 8, characterized in that: The tamping member includes a fourth telescopic member and a fifth telescopic member. Both ends of the fourth telescopic member are fixedly connected to the first arm tube and the second arm tube respectively. Both ends of the fifth telescopic member are fixedly connected to the second arm tube and the third arm tube respectively.

10. The coal mining face ramming and roof breaking device according to claim 9, characterized in that: The tamping member includes a sixth telescopic member, both ends of which are respectively hinged to the third arm tube and the tamping head, and the tamping head is hinged to the third arm tube.

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