Tensioning mechanism and hydraulic support

Abstract

This utility model discloses a tensioning mechanism and a hydraulic support. The tensioning mechanism includes a top beam body, a seat support, a fixing frame, and an elastic tensioning structure. A set of seat supports are disposed on the top beam body, and a fixing frame is provided between the set of seat supports. One end of the elastic tensioning structure is connected to each side of the fixing frame. The elastic tensioning structure is configured such that when the other end of the elastic tensioning structure is in close contact with the corresponding seat support, it is in an elastically compressed state. The beneficial effects of this utility model are: the elastic tensioning structure, in close contact with the seat support, compresses the spring, and the tension force generated by the spring's rebound potential energy pushes the seat support apart to both sides.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to tensioning mechanisms and hydraulic supports. Background Technology

[0002] Stacked hydraulic supports are the earliest and simplest type of hydraulic support used in fully mechanized coal mining faces underground. They mainly rely on strong vertical support force to support the roof and maintain the safety of the coal mining working space.

[0003] In the old-style stack-type support, when the upright column is extended or retracted, the sudden increase in pressure causes the column to suddenly deviate to both sides, resulting in rapid wear of the pin. In addition, the movement of the emulsion inside the column causes vibration, which causes the threaded joints installed on the column to loosen and leak due to long-term wear.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to solve the problem of deviation during the movement of the movable column.

[0006] This utility model solves the above-mentioned technical problems through the following technical means:

[0007] This utility model claims protection for a tensioning mechanism, including a top beam body, a seat support, a fixing frame, and an elastic tensioning structure; The main body of the top beam is divided into a set of seats, and a fixed frame is set between the set of seats. The two sides of the fixed frame are respectively connected to one end of the elastic tensioning structure. The elastic tensioning structure is configured to be in an elastic compression state when the other end of the elastic tensioning structure is in tight fit with the corresponding seat.

[0008] This utility model is equipped with an elastic tensioning structure that fits tightly against the seat support. The spring is in a compressed state, and the tension force generated by the spring's rebound potential energy pushes the seat support to both sides.

[0009] Preferably, the elastic tensioning structure includes a sliding sleeve, an elastic unit, a base support, and a sliding column. Circular holes are provided on both sides of the fixing frame, with the axis of the circular holes being horizontal. A sliding column is provided inside the circular hole, and a sliding sleeve is fitted over the sliding column. The sliding sleeve and the sliding column are connected by an elastic unit. A base support is coaxially provided at the end of the sliding sleeve located outside the circular hole, and the base support is tightly fitted against the side of the seat support.

[0010] By setting a base support, the base support and the seat support are tightly fitted together. At this time, the elastic unit is in a compressed state, and the tension force generated by the spring rebound potential energy pushes the seat support to both sides.

[0011] Preferably, the sliding sleeve has a sleeve-shaped structure, with one end of the elastic unit connected inside the sleeve cavity, and the other end of the elastic unit connected to the base support, which is located on the outside of the sliding sleeve.

[0012] The sleeve has a cylindrical structure that provides installation space for the elastic unit.

[0013] Preferably, the diameter of the sliding sleeve is smaller than the diameter of the base.

[0014] A larger base diameter increases the contact space with the seat, making it easier to apply force to the seat.

[0015] Preferably, a slot is provided on the side of the seat, and the base is tightly fitted into the slot.

[0016] The slot also acts as a limiter for the base, preventing it from veering off course when force is applied to the base.

[0017] Preferably, the elastic element is a sheet and / or a spring.

[0018] Preferably, a connecting part is provided on the top of the seat support, and the connecting part is connected to the top beam body.

[0019] The connecting part is used to connect the seat support and the top beam body.

[0020] Preferably, the connecting parts are plate-shaped structures, evenly distributed between the top of the seat support and the main body of the top beam, with a hollowed-out shape between adjacent connecting parts.

[0021] A perforated shape is formed between adjacent connecting parts to ensure that the tensioning mechanism is not overweight.

[0022] This utility model also requires protection of the hydraulic support, including a piston head and a tensioning mechanism, wherein the piston head is locked to the corresponding seat.

[0023] The hydraulic support claimed in this utility model, firstly, has a seat support that limits the piston head, so that the two piston heads have a preliminary limiting effect in the vertical direction. Secondly, the base and seat are designed to engage in contact, with the spring in a compressed state. The tension generated by the spring's rebound potential energy pushes the seat to both sides. Since the seat itself provides a limiting and fixing effect on the piston head, it will inevitably also provide a limiting and fixing effect on the piston head. Therefore, when the piston is subjected to force, such as pressure or the movement of the internal emulsion, and has a tendency to vibrate and deviate, the spring can act as a buffer and limit, greatly reducing the possibility of the piston head deviating. This also avoids the problem of loosening and leakage of the threaded joints installed on the piston due to long-term wear, ultimately improving the overall stability of the stacked support during use.

[0024] Preferably, a first pin hole is opened between the seat support and the piston head along the length direction of the seat support, and a first pin is inserted into the first pin hole. A second pin hole is opened between the seat support and the piston head along the width direction of the seat support, and a second pin is inserted into the second pin hole. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the tensioning mechanism in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the hydraulic support structure in Embodiment 2 of this utility model; Figure 3 This is an exploded view of the hydraulic support in Embodiment 2 of this utility model; 1. Piston head; 10. First pin; 11. Second pin; 20. Main body of the top beam; 21. Seat support; 210. Connecting part; 22. Fixing frame; 220. Reinforcing rib; 23. Sliding sleeve; 24. Spring; 25. Base support. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example 1 See Figure 1 This embodiment requires protection of the tensioning mechanism, including the top beam body 20, the seat support 21, the fixing frame 22, the sliding sleeve 23, the spring 24, the bottom support 25, and the sliding column 26.

[0028] The main body 20 of the top beam has an outer shell structure. A set of seats 21 are symmetrically arranged along the center line of the length direction inside the main body 20. Three connecting parts 210 are provided on the top of the seats 21, and the connecting parts 210 are connected to the main body 20 of the top beam.

[0029] The connecting part 210 has a plate-like structure and is evenly distributed between the top of the seat 21 and the top beam body 20. The adjacent connecting parts 210 form a hollow shape to ensure that the weight of the tensioning mechanism is not too heavy.

[0030] The number of connecting parts 210 is not limited to three, and their shape is not limited to plate-shaped, but can also be rod-shaped, in order to ensure the connection between the top beam body 20 and the seat support 21.

[0031] A fixing frame 22 is provided between a group of seat supports 21. The fixing frame 22 has a trapezoidal groove plate structure, and its top two sides are respectively connected to the seat supports 21.

[0032] The fixing frame 22 is not limited to a trapezoidal groove plate; it can also be a straight groove plate or a V-shaped groove plate. It is necessary to ensure that a certain distance is reserved between the two sides of the fixing frame 22 and the seat 21.

[0033] To ensure the stability of the fixing frame 22, a reinforcing rib 220 can be provided between the fixing frame 22 and the top beam body 20. The rib is in the shape of a vertical plate, and its top and bottom ends are respectively connected to the fixing frame 22 and the top beam body 20.

[0034] Both sides of the fixing frame 22 are provided with round holes, the axis of the round holes is horizontal, and one end of the sliding column 26 is coaxially arranged in the round hole. The sliding column 26 is covered with a sliding sleeve 23, which has a sleeve-shaped structure. A spring 24 is provided between the sliding sleeve 23 and the sliding column 26. The end of the sliding sleeve 23 located outside the round hole is connected to the base 25. The base 25 is located outside the sliding sleeve 23 and is coaxially arranged with the sliding sleeve 23. The diameter of the sliding sleeve 23 is smaller than the diameter of the base 25. The base 25 is tightly fitted into the corresponding slot opened on the side of the seat 21. At this time, the spring 24 is in a compressed state.

[0035] This embodiment is not limited to spring 24, but can also be a spring sheet, etc., mainly to provide elastic force.

[0036] Example 2 See Figure 2 and Figure 3 This embodiment, based on Embodiment 1, requires protection of the hydraulic support, including the piston head 1 and the tensioning mechanism.

[0037] There are generally two piston heads 1, which are an important part of the hydraulic support column. They are located at the top of the piston and mainly play a role in connection and transmission. This is existing technology and will not be described in detail.

[0038] The piston head 1 is locked to the corresponding seat 21. Specifically, a first pin hole is opened between the seat 21 and the piston head 1 along the length direction of the seat 21, and a first pin 10 is inserted into the first pin hole. A second pin hole is opened between the seat 21 and the piston head 1 along the width direction of the seat 21, and a second pin 11 is inserted into the second pin hole.

[0039] The hydraulic support is used to suppress piston deviation as follows: First, the seat 21 itself plays a limiting role on the piston head 1, so that the two piston heads 1 have a preliminary limiting effect in the vertical direction; Secondly, the base 25 and the seat 21 are designed to engage in contact, with the spring 24 in a compressed state. The tension generated by the rebound potential energy of the spring 24 pushes the seat 21 to both sides. Since the seat 21 itself has a limiting and fixing effect on the piston head 1, it will inevitably also have a limiting and fixing effect on the piston head 1. Therefore, when the piston is subjected to force, such as pressure or the movement of the internal emulsion, and has a tendency to vibrate and deviate, the spring 24 can play a buffering and limiting role, greatly reducing the possibility of the piston head 1 deviating. This also avoids the problem of loosening and leakage of the threaded joints installed on the piston due to long-term wear, and ultimately improves the overall stability of the stacked support during use.

[0040] 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 the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tensioning mechanism, characterized in that, It includes a top beam body (20), a seat support (21), a fixing frame (22), and an elastic tensioning structure; The top beam body (20) is divided into a set of seat supports (21), and a fixing frame (22) is set between the set of seat supports (21). The two sides of the fixing frame (22) are respectively connected to one end of the elastic tensioning structure. The elastic tensioning structure is configured to be in an elastic compression state when the other end of the elastic tensioning structure is in a tight fit with the corresponding seat support (21).

2. The tensioning mechanism according to claim 1, characterized in that, The elastic tensioning structure includes a sliding sleeve (23), an elastic unit, a base support (25), and a sliding column (26). The fixed frame (22) has round holes on both sides, with the axis of the round holes being horizontal. A sliding column (26) is installed inside the round hole, and the sliding sleeve (23) is fitted over the sliding column (26). The sliding sleeve (23) and the sliding column (26) are connected by an elastic unit. The base support (25) is coaxially installed at the end of the sliding sleeve (23) located outside the round hole. The base support (25) is tightly fitted against the side of the seat support (21).

3. The tensioning mechanism according to claim 2, characterized in that, The sliding sleeve (23) has a sleeve-shaped structure. One end of the elastic unit is connected inside the cavity of the sliding sleeve (23), and the other end of the elastic unit is connected to the base (25). The base (25) is located outside the sliding sleeve (23).

4. The tensioning mechanism according to claim 2, characterized in that, The diameter of the sliding sleeve (23) is smaller than the diameter of the base (25).

5. The tensioning mechanism according to claim 2, characterized in that, The seat (21) has a slot on its side, and the base (25) fits tightly into the slot.

6. The tensioning mechanism according to claim 2, characterized in that, The elastic element is a sheet and / or a spring (24).

7. The tensioning mechanism according to claim 1, characterized in that, The top of the seat support (21) is provided with a connecting part (210), which is connected to the main body of the top beam (20).

8. The tensioning mechanism according to claim 1, characterized in that, The connecting part (210) has a plate-like structure and is evenly distributed between the top of the seat support (21) and the main body of the top beam (20), forming a hollow shape between adjacent connecting parts (210).

9. A hydraulic support, characterized in that, The tensioning mechanism includes any one of claims 1 to 8, and further includes a piston head (1) that is locked to a corresponding seat (21).

10. The hydraulic support according to claim 9, characterized in that, A first pin hole is opened between the seat support (21) and the piston head (1) along the length direction of the seat support (21), and a first pin (10) is inserted into the first pin hole. A second pin hole is opened between the seat support (21) and the piston head (1) along the width direction of the seat support (21), and a second pin (11) is inserted into the second pin hole.

Images