Quick connecting structure for telescopic upright post and plunger of hydraulic support

Abstract

The utility model provides a quick connecting structure for a movable column of a telescopic stand column of a hydraulic support, which belongs to the field of hydraulic supports and comprises a stand column body, a movable column is arranged in the stand column body in a sliding mode, and the outer end of the movable column is connected with a column head. The connecting assembly comprises a clamping ring and two plug pins, a first annular groove is formed in the movable column, a clamping groove is formed in the outer end of the movable column, inserting holes are formed in the two ends of the clamping groove in a penetrating mode, the inserting holes are formed in the first annular groove, and the two plug pins are inserted into the two inserting holes correspondingly; a clamping hole is formed in the column head in a penetrating mode. According to the utility model, the connecting assembly is arranged, so that the column head can be quickly and conveniently mounted and dismounted, replacement or maintenance is facilitated, and the maintenance cost is reduced; and the telescopic protective cover plays a protection role, the service life is prolonged, replacement is convenient, and practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support technology, and in particular to a quick connection structure for a retractable column of a hydraulic support. Background Technology

[0002] The most important component of a hydraulic support is the hydraulic support column. The column connects the support's top beam and base, protecting the safety of people and equipment underground. The column is constantly under high pressure and bears the load of the roof plate. It is the main load-bearing component of the support, therefore, the column is required to have sufficient strength, high reliability, and long service life.

[0003] In the current technological context, the hinge joint between the piston and the top beam of a hydraulic support typically uses a direct welding method to fix the piston head. After prolonged use, the piston head area often suffers varying degrees of wear. This weakens the hinge tightness between the piston head and the top beam, reduces the support performance of the hydraulic support, and affects the stability and safety of the working face. Existing technology often requires replacing the entire piston when the piston head experiences severe wear or damage, which is not only inefficient but also increases equipment maintenance costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a quick connection structure for a retractable column of a hydraulic support.

[0005] An embodiment of this utility model provides a quick connection structure for a retractable column piston of a hydraulic support, comprising:

[0006] The column body has a movable column slidably disposed within it, and a column head is connected to the outer end of the movable column;

[0007] A connecting assembly includes a clamping ring and two pins. A first annular groove is provided on the movable column, and a slot is provided at the outer end of the movable column. Insertion holes are provided through both ends of the slot, and the insertion holes are located in the first annular groove. The two pins are respectively inserted into the two insertion holes. A slot is provided through the column head. The clamping ring is sleeved in the first annular groove. Through holes are provided at both ends of the clamping ring, and bolts are provided through the two through holes. Nuts are threaded onto the bolts.

[0008] Furthermore, a telescopic protective cover is fitted onto the movable column, and rubber rings are fixedly connected to both ends of the telescopic protective cover.

[0009] Furthermore, the column body is provided with a second annular groove, and the two rubber rings are respectively disposed in the first annular groove and the second annular groove.

[0010] Furthermore, a clamping ring is also provided in the second annular groove, and the two rubber rings are respectively arranged in the clamping ring on the same side.

[0011] Furthermore, the column head is slidably disposed against the inner wall of the slot, and the pin is inserted into the slot on the same side.

[0012] Furthermore, the diameter of the rubber ring in the first annular groove is smaller than the diameter of the rubber ring in the second annular groove, and the diameter of the clamping ring in the first annular groove is smaller than the diameter of the rubber ring in the clamping ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. A connecting assembly is provided. First, remove the clamping ring, then pull out the pin to remove the column head; insert the column head into the slot, then insert the pin into the hole, and finally, put on the clamping ring and tighten the bolts to fix the column head; the operation is simple, easy to replace, and reduces maintenance costs.

[0015] 2. A telescopic protective cover is installed. The telescopic protective cover can prevent dust or impurities in the mine from entering the connection between the movable column and the upright column, causing wear between them, thereby extending the service life. The telescopic protective cover can be removed by removing the two clamping rings, which is convenient for replacement and increases practicality.

[0016] In summary, this utility model features a connecting component that allows for quick and convenient installation and disassembly of the column head, facilitating replacement or maintenance and reducing maintenance costs. It also includes a telescopic protective cover, which provides protection, extends service life, and is easy to replace, thus increasing practicality. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a quick-connect structure for a retractable column of a hydraulic support as described in an embodiment of this utility model.

[0018] Figure 2 This is an unfolded view of the connecting components in the quick connection structure of the retractable column of the hydraulic support described in this embodiment of the present utility model.

[0019] Figure 3 This is an unfolded view of the telescopic protective cover in the quick connection structure of the telescopic column of the hydraulic support described in this embodiment of the present invention.

[0020] In the above attached figures: 1. Column body, 2. Movable column, 3. First annular groove, 4. Column head, 5. Locking hole, 6. Locking groove, 7. Insertion hole, 8. Pin, 9. Clamping ring, 10. Through hole, 11. Bolt, 12. Nut, 13. Telescopic protective cover, 14. Rubber ring, 15. Second annular groove. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-3 As shown in the figure, this utility model embodiment proposes a quick connection structure for a retractable column of a hydraulic support, comprising:

[0023] The column body 1 has a movable column 2 that is slidably disposed inside the column body 1. The outer end of the movable column 2 is connected to a column head 4, which is used to be hinged to the top beam of the hydraulic support.

[0024] The connecting component includes a clamping ring 9 and two pins 8. The movable column 2 is provided with a first annular groove 3 and a slot 6 is provided at the outer end of the movable column 2. The column head 4 is slidably disposed against the inner wall of the slot 6 so that the column head 4 can be inserted into the slot 6. The slot 6 is used to limit the position of the column head 4.

[0025] Both ends of the slot 6 are provided with insertion holes 7, which are located in the first annular groove 3. Two pins 8 are inserted into the two insertion holes 7 respectively. The column head 4 is provided with a through hole 5, and the pins 8 are inserted into the through hole 5 on the same side, so that the pins 8 pass through the insertion hole 7 and are inserted into the through hole 5, thus locking and fixing the column head 4.

[0026] The clamping ring 9 is fitted inside the first annular groove 3. The clamping ring 9 has a certain elasticity, which allows the clamping ring 9 to be fitted into the first annular groove 3, and the clamping ring 9 can be contracted by squeezing. Both ends of the clamping ring 9 are provided with through holes 10, and bolts 11 are inserted through the two through holes 10. Nuts 12 are threaded on the bolts 11. The bolts 11 and nuts 12 can tighten and contract the clamping ring 9.

[0027] The movable column 2 is fitted with a telescopic protective cover 13. The telescopic protective cover 13 can prevent dust or impurities in the mine from entering the connection between the movable column 2 and the column 1, causing wear between the two, thereby extending the service life. The telescopic protective cover 13 has a certain degree of elasticity and can be stretched and contracted. Both ends of the telescopic protective cover 13 are fixedly connected with rubber rings 14, which have a certain degree of elasticity and can be stretched and contracted.

[0028] The column body 1 is provided with a second annular groove 15, and two rubber rings 14 are respectively disposed in the first annular groove 3 and the second annular groove 15; the diameter of the rubber ring 14 in the first annular groove 3 is smaller than the diameter of the rubber ring 14 in the second annular groove 15; a clamping ring 9 is also provided in the second annular groove 15, and two rubber rings 14 are respectively disposed in the clamping ring 9 on the same side, so that the clamping ring 9 can clamp the corresponding rubber ring 14. The diameter of the clamping ring 9 in the first annular groove 3 is smaller than the diameter of the rubber ring 14 in the clamping ring 9.

[0029] The detailed working process of this utility model is as follows:

[0030] 1. When disassembling, first unscrew the corresponding bolts 11 and nuts 12 to remove the clamping ring 9 in the first annular groove 3. Then pull out the pins 8 on both sides and separate them from the locking holes 5. The column head 4 can then be pulled out from the locking groove 6 for replacement or maintenance.

[0031] 2. At this point, remove the clamping ring 9 in the second annular groove 15 in the same way to separate it from the rubber ring 14, and then remove the telescopic protective cover 13 for replacement.

[0032] 3. During installation, first insert the column head 4 into the slot 6, then insert the two pins 8 into the two holes 7 and snap them into the slot 5. Then, put the two rubber rings 14 into the second annular groove 15 and the first annular groove 3 respectively. Finally, put on the two clamping rings 9 in sequence, and tighten and retract the clamping rings 9 with bolts 11 and nuts 12 to fix the column head 4 and the telescopic protective cover 13.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A quick-connect structure for a retractable upright column of a hydraulic support, characterized in that, include: The column body (1) has a movable column (2) slidably disposed inside the column body (1), and the outer end of the movable column (2) is connected to a column head (4); The connecting assembly includes a clamping ring (9) and two pins (8). The movable column (2) is provided with a first annular groove (3). The outer end of the movable column (2) is provided with a slot (6). Both ends of the slot (6) are provided with insertion holes (7). The insertion holes (7) are located in the first annular groove (3). The two pins (8) are respectively inserted into the two insertion holes (7). The column head (4) is provided with a slot (5). The clamping ring (9) is sleeved in the first annular groove (3). Both ends of the clamping ring (9) are provided with through holes (10). Bolts (11) are provided through the two through holes (10). Nuts (12) are threaded onto the bolts (11).

2. The quick connection structure for a retractable column of a hydraulic support according to claim 1, characterized in that, in: The movable column (2) is fitted with a telescopic protective cover (13), and both ends of the telescopic protective cover (13) are fixedly connected with rubber rings (14).

3. The quick connection structure for a retractable column of a hydraulic support according to claim 2, characterized in that, in: The column body (1) is provided with a second annular groove (15), and the two rubber rings (14) are respectively disposed in the first annular groove (3) and the second annular groove (15).

4. The quick connection structure for a retractable column of a hydraulic support according to claim 3, characterized in that, in: The second annular groove (15) is also provided with a clamping ring (9), and the two rubber rings (14) are respectively provided in the clamping ring (9) on the same side.

5. The quick-connect structure for a retractable column of a hydraulic support according to claim 1, characterized in that, in: The column head (4) is slidably abutted against the inner wall of the slot (6), and the pin (8) is inserted into the slot (5) on the same side.

6. The quick connection structure for a retractable column of a hydraulic support according to claim 3, characterized in that, in: The diameter of the rubber ring (14) in the first annular groove (3) is smaller than the diameter of the rubber ring (14) in the second annular groove (15), and the diameter of the clamping ring (9) in the first annular groove (3) is smaller than the diameter of the rubber ring (14) in the clamping ring (9).

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