Roadway hydraulic support top beam connecting frame mechanism

Abstract

The utility model relates to the technical field of coal mining equipment, in particular to a top beam connecting frame mechanism of a roadway hydraulic support, which comprises a sleeve, the sleeve is arranged at the lower end of each top beam, a round baffle matched with the sleeve is welded in the sleeve, a long round hole is arranged in the middle of the baffle, and a rotating shaft is sleeved in the sleeve. The ends, located in the sleeves, of the rotating shafts are connected with limiting plates matched with the long round holes through connecting shafts, the limiting plates penetrate through the long round holes and are matched with the baffles in a stopping mode after rotating, a connecting frame jack is arranged between every two adjacent top beams, and the other ends of the rotating shafts are connected with the two ends of the connecting frame jack respectively. The connecting structure has the advantages of being simple in structure and high in connecting strength.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining equipment, in particular to a tunnel hydraulic support top beam connecting mechanism. Background Art

[0002] In mines that use underground mining, tunnels are an important part of the production system, responsible for multiple functions such as transportation, ventilation, and pedestrians. Maintaining the safety and effectiveness of tunnels is an important task for each mine. With the increase in mine production capacity and the increase in mining intensity, the strength of tunnel support also needs to be continuously improved, so the use of tunnel hydraulic supports is increasing. However, due to the narrowness and height of the tunnel hydraulic supports and the uneven height of the tunnel floor, the supports are prone to tilt or even fall after being moved. The top beam connecting mechanism can correct the skewed posture of the tunnel advance supports in a group of two, which can effectively prevent the supports from falling and improve the safety of coal mine tunnel support.

[0003] The authorized patent publication number is CN216691134U, and the patent name is "A bracket combination mechanism with adjustable center distance". It discloses a bracket combination mechanism with adjustable center distance. Through the coordination of the base connecting hydraulic cylinder, the top beam connecting hydraulic cylinder and the movable side plate, facing the characteristics of the change of the empty top area of ​​the roadway at the tail of the machine, the spacing and top area of ​​the first bracket group and the second bracket group can be adjusted to adapt to the change of the empty top area caused by the downward slide of the working surface at the tail of the machine, so as to better maintain the roadway at the tail of the machine. However, the connection method of the connecting mechanism used in this mechanism is more complicated, requiring the shaft and the sleeve to be connected by two pins and a cotter pin, and because the shaft and the sleeve are connected by two pins, there is a hole on the sleeve, which reduces the strength of the sleeve and makes it easy to be damaged at the pin of the sleeve. Utility Model Content

[0004] In order to solve the above technical problems, the utility model specifically adopts the following technical solutions.

[0005] A tunnel hydraulic support top beam connecting mechanism is designed, including a sleeve, the sleeve is arranged at the lower end of each top beam, a circular baffle matching therewith is welded inside the sleeve, an oblong hole is opened in the middle position of the baffle, a rotating shaft is installed in the sleeve, and one end of the rotating shaft located in the sleeve is connected to a limit plate matching the oblong hole through a connecting shaft, the limit plate passes through the oblong hole and rotates to stop and match with the baffle, a connecting jack is provided between two adjacent top beams, and the other end of the rotating shaft is connected to the connecting jack.

[0006] Preferably, the upper end of the sleeve is welded to the top beam, and the lower end of the sleeve is fitted with the rotating shaft.

[0007] Preferably, the other end of the rotating shaft is connected with a U-shaped connecting seat, and the U-shaped connecting seat is connected to the connecting frame jack through a step pin.

[0008] The beneficial effects of the utility model are:

[0009] The utility model allows the limit plate at the upper end of the rotating shaft to pass through the oblong hole, and then the rotating shaft, the connecting shaft, and the limit plate rotate together. After rotating to a certain angle, the limit plate forms a stop structure with the baffle plate, thereby preventing the rotating shaft from escaping from the oblong hole. Then the lower end of the rotating shaft is connected to the connecting jack, thereby realizing the connection between two adjacent top beams, thereby utilizing the telescopic movement of the connecting jack to adjust the distance and support posture between the two top beams to prevent the bracket from tilting and tipping over. Moreover, there is no need for a pin shaft perforation connection between the above-mentioned sleeve and the rotating shaft, thereby ensuring the connection strength of the sleeve and the rotating shaft, and the operation of the two being connected and matched is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the main structure of the rotating shaft;

[0012] Figure 3 1 is a schematic diagram of the side view structure of the rotating shaft;

[0013] Figure 4 1 is a schematic diagram of the top view of the rotating shaft;

[0014] Figure 5 It is a schematic diagram of the main structure of the sleeve;

[0015] Figure 6 1 is a schematic diagram of the side view structure of the sleeve;

[0016] Figure 7 1 is a schematic diagram of the top view of the sleeve;

[0017] The numbers in the figure are: 1 top beam, 2 connecting jack, 3 rotating shaft, 31 connecting shaft, 32 limiting plate, 33 U-type connecting seat, 4 sleeve, 41 baffle, 42 oblong hole. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] Example 1

[0020] A tunnel hydraulic support top beam connecting mechanism, such as Figures 1 to 7As shown, it includes a sleeve 4, which is welded to the lower end of each top beam 1, and a circular baffle 41 is welded inside the sleeve 4 to match it. An oblong hole 42 is opened in the middle position of the baffle 41, and a rotating shaft 3 is installed in the sleeve 4, and one end of the rotating shaft 3 located in the sleeve 4 is connected to a limit plate 32 that matches the oblong hole 42 through a connecting shaft 31. The limit plate 32 passes through the oblong hole 42 and rotates to stop and match the baffle 41. A connecting jack 2 is provided between two adjacent top beams 1, and the other end of the rotating shaft 3 is connected to the connecting jack 2. Specifically, the upper end of the rotating shaft 3 is connected to the limit plate 32, and the lower end is connected to the connecting jack 2. After the limit plate 32 passes through the oblong hole 42, it can be rotated a certain angle to cooperate with the baffle 41 to prevent the rotating shaft 3 from escaping from the oblong hole 42, and the blocking effect of the limit plate 32 and the baffle 41 is best when it is rotated 90°, but the rotation angle must be less than 180 degrees. There is no need for a pin perforation connection between the above sleeve 4 and the rotating shaft 3, which ensures the connection strength of the sleeve 4 and the rotating shaft, and the connection structure of the two is simple and convenient when coordinated.

[0021] The other end of the rotating shaft 3 is connected with a U-shaped connecting seat 33, and the U-shaped connecting seat 33 is connected to the connecting jack 2 through a step pin.

[0022] In the utility model, the limit plate 32 at the upper end of the rotating shaft 3 passes through the oblong hole 42, and then the rotating shaft 3 is rotated to drive the limit plate 32 to rotate accordingly, and form a stopping structure with the baffle 4 to prevent the rotating shaft 3 from escaping from the oblong hole 42, and then the lower end of the rotating shaft 3 is connected to the connecting jack 2, that is, the two ends of the connecting jack 2 are respectively connected to the rotating shaft 3 on the two adjacent top beams 1, so as to realize the connection between the two adjacent top beams 1, so that the distance and support posture between the two top beams 1 can be adjusted by using the extension and retraction of the connecting jack 2 to prevent the problem of the support being skewed and tilted during the moving process of the tunnel hydraulic support.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunnel hydraulic support top beam connecting mechanism, characterized in that: The invention comprises a sleeve (4), wherein the sleeve (4) is arranged at the lower end of each top beam (1), a circular baffle (41) matched with the sleeve (4) is welded inside the sleeve (4), an oblong hole (42) is opened in the middle of the baffle (41), a rotating shaft (3) is sleeved inside the sleeve (4), and one end of the rotating shaft (3) located inside the sleeve (4) is connected to a limiting plate (32) matched with the oblong hole (42) through a connecting shaft (31), the limiting plate (32) passes through the oblong hole (42) and rotates to stop and match with the baffle (41), a connecting jack (2) is arranged between two adjacent top beams (1), and the other end of the rotating shaft (3) is connected to the connecting jack (2).

2. The tunnel hydraulic support top beam connecting mechanism according to claim 1, characterized in that: The upper end of the sleeve (4) is welded to the top beam (1), and the lower end is sleeved with the rotating shaft (3).

3. The tunnel hydraulic support top beam connecting mechanism according to claim 1, characterized in that: The other end of the rotating shaft (3) is connected to a U-shaped connecting seat (33), and the U-shaped connecting seat (33) is connected to the connecting jack (2) via a step pin.

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