A telescoping sway beam mechanism for a slip bracket

Abstract

A telescopic deflection crossbeam mechanism for a sliding support comprises a main crossbeam, two auxiliary crossbeams and two telescopic columns, the main crossbeam is arranged between the two auxiliary crossbeams, the main crossbeam and the two auxiliary crossbeams are slidingly connected to form a telescopic support crossbeam, a telescopic jack is hinged between the main crossbeam and the two auxiliary crossbeams respectively, the two telescopic columns are arranged at the opposite ends of the two auxiliary crossbeams respectively, the opposite ends of the two auxiliary crossbeams are hinged with the top of the two telescopic columns through first pin shafts, the first pin shafts are horizontally arranged and perpendicular to the length direction of the auxiliary crossbeams, a balance jack is hinged between the hinged telescopic column and the auxiliary crossbeam, and the upper portions of the main crossbeam and the auxiliary crossbeams are used for mounting the longitudinal beams of the sliding support. The telescopic deflection crossbeam mechanism can adapt to the change of the roadway width and the inclination of the roadway roof, smoothly realize the forward movement of the support, ensure that the support is fully connected with the roof, and make the longitudinal beams avoid the original anchor cable and anchor rod support of the roadway, thereby effectively protecting the anchor cable and anchor rod.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine roadway support equipment, specifically, to a telescopic swing beam mechanism for sliding supports. Background Technology

[0002] Sliding supports have advantages such as good overall support effect, self-moving capability, and simple structure, and are currently widely used in coal mine roadway support. However, the following problems exist when using traditional sliding supports: (1) After the roadway is excavated, the roadway width varies due to geological conditions and mining technology. When the roadway width narrows during the sliding support's movement, the sliding support cannot pass through. Usually, the roadway needs to be widened to ensure the sliding support can pass smoothly, which increases production costs and time; (2) The roadway roof is tilted, resulting in insufficient roof support of the sliding support, which is not easy to maintain the roadway; (3) The position of the longitudinal beam of the sliding support on the crossbeam is usually fixed. When the sliding support moves forward, the longitudinal beam is difficult to avoid the original anchor cable and anchor rod support of the roadway, which can easily damage the original anchor cable and anchor rod support, causing the roadway roof to break and sink, the support to be crushed, and the working face to stop production. At present, coal mine mining is gradually adopting the goaf retention process, and it is even more necessary to protect the anchor cables and anchor rods from damage.

[0003] Chinese invention patent CN201910486017.5 discloses a double-position device for a sliding support column. This sliding support is an advanced support for a fully mechanized mining face roadway, with an overall frame structure. The support adopts a two-set staggered top beam structure, arranged in a push-pull configuration. It includes a support beam, the upper part of which connects to the top beam, and the lower two ends connecting to columns. Along the roadway width direction, each end of the support beam has two column connection positions, with each column connected to one of these positions. If the width of the roadway or equipment changes, the columns can be moved to the required positions, thereby changing the support width and the column spacing, allowing the sliding advanced support to move smoothly and ensuring the proper operation of the fully mechanized mining face equipment. The aforementioned patent changes the width of the support by altering the position of the column. However, the length of the supporting beam remains unchanged, resulting in no change in the width of the main body of the support. In this case, it is still necessary to widen the upper part of both sides of the roadway to ensure that the support can move smoothly. Moreover, the sliding support of the aforementioned patent cannot adapt to the inclination of the roadway roof, nor can it solve the problem that the longitudinal beams easily damage the original anchor cable and anchor bolt support of the roadway. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a telescopic swing beam mechanism for sliding supports. This invention can adapt to changes in roadway width and roadway roof inclination, smoothly enabling the support to move forward, ensuring sufficient roof contact, and allowing the longitudinal beam to avoid the original anchor cable and anchor rod support in the roadway, effectively protecting the anchor cables and anchor rods.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a telescopic swing beam mechanism for a sliding support, comprising a main beam, two secondary beams, and two telescopic columns. The main beam is disposed between the two secondary beams, and the main beam and the two secondary beams are slidably connected to form a telescopic support beam. A telescopic jack is hinged between the main beam and each of the two secondary beams. The two telescopic columns are respectively disposed at opposite ends of the two secondary beams. The opposite ends of the two secondary beams are respectively hinged to the top of the two telescopic columns via a first pin. The first pin is horizontally disposed and perpendicular to the length direction of the secondary beams. A balancing jack is hinged between the hinged telescopic columns and the secondary beams. The upper part of the main beam and the secondary beams is used to install the longitudinal beam of the sliding support.

[0006] Beneficial Effects: This utility model optimizes the structure of the crossbeam of a traditional sliding support. Specifically, an auxiliary crossbeam is slidably connected to each end of the main crossbeam, forming a telescopic support crossbeam. A telescopic jack is hinged between the main crossbeam and each of the two auxiliary crossbeams. By extending and retracting the telescopic jacks, the auxiliary crossbeams slide relative to the main crossbeam, thus adjusting the length of the telescopic support crossbeam and consequently the overall width of the sliding support. This adapts to changes in roadway width, ensuring the sliding support can smoothly pass through narrowing sections of the roadway and facilitate forward movement. Simultaneously, the auxiliary crossbeams are hinged to the top of the telescopic columns via a first pin. This first pin is horizontally positioned and perpendicular to the length direction of the auxiliary crossbeam, allowing for rotational connection between the auxiliary crossbeams and the telescopic columns. The telescopic support beam and the secondary crossbeam are hinged together by a balancing jack. By extending and retracting the balancing jack, the angle between the telescopic support beam and the telescopic column can be adjusted. At the same time, the raising and lowering of the corresponding telescopic column can be controlled, allowing the telescopic support beam to tilt and deflect. This adapts to the tilt of the roadway roof, ensures sufficient roof contact of the sliding support, improves the stress condition of the support, extends the service life of the support, reduces mine investment costs, reduces maintenance frequency, increases labor productivity, and facilitates roadway maintenance. When the secondary crossbeam and the main crossbeam slide relative to each other using the telescopic jack, the position of the longitudinal beam in the roadway can also be adjusted so that the longitudinal beam avoids the original anchor cable and anchor bolt support. This prevents the longitudinal beam from damaging the original anchor cable and anchor bolt support in the roadway and effectively protects the anchor cables and anchor bolts.

[0007] Based on the above, both the main crossbeam and the secondary crossbeam are box beams, and the main crossbeam and the secondary crossbeam are slidably connected.

[0008] Beneficial effects: The main and secondary crossbeams are designed as box beams, which have high structural strength. Moreover, the main and secondary crossbeams are slidably connected, ensuring reliable assembly. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2This is a schematic diagram of the deflection of this utility model.

[0011] In the diagram: 1. Main crossbeam; 2. Secondary crossbeam; 3. Telescopic column; 4. Telescopic jack; 5. First pin; 6. Balancing jack; 7. Longitudinal beam. Detailed Implementation

[0012] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0013] like Figure 1 and Figure 2 As shown, a telescopic swaying beam mechanism for a sliding support includes a main beam 1, two secondary beams 2, and two telescopic columns 3. The main beam 1 is positioned between the two secondary beams 2, and the main beam 1 and the two secondary beams 2 are slidably connected to form a telescopic support beam. A telescopic jack 4 is hinged between the main beam 1 and each of the two secondary beams 2. The two telescopic columns 3 are respectively positioned at opposite ends of the two secondary beams 2, and the opposite ends of the two secondary beams 2 are respectively hinged to the top of the two telescopic columns 3 via a first pin 5. The first pin 5 is horizontally positioned and perpendicular to the length direction of the secondary beams 2. A balancing jack 6 is hinged between the hinged telescopic columns 3 and the secondary beams 2. The upper part of the main beam 1 and the secondary beams 2 is used to install the longitudinal beam 7 of the sliding support.

[0014] Both the main crossbeam 1 and the secondary crossbeam 2 are box beams. The main crossbeam 1 and the secondary crossbeam 2 are slidably connected, resulting in high structural strength and reliable assembly.

[0015] This invention allows for the adjustment of the length of the telescopic support beam by sliding the secondary crossbeam 2 relative to the main crossbeam 1 via the telescopic drive of the telescopic jack 4. This adjustment, in turn, enables the overall width of the sliding support to be adjusted to adapt to changes in roadway width, ensuring the sliding support can smoothly pass through narrowing sections of the roadway and facilitate its forward movement. Simultaneously, the top of the secondary crossbeam 2 and the telescopic column 3 are hinged via a first pin 5, which is horizontally positioned and perpendicular to the length direction of the secondary crossbeam 2. This allows for a rotatable connection between the secondary crossbeam 2 and the telescopic column 3. Furthermore, a balancing jack 6 is hinged between the hinged telescopic column 3 and the secondary crossbeam 2. Therefore, the telescopic movement of the balancing jack 6... The adjustable angle between the telescopic support beam and the telescopic column 3, along with the control of the lifting and lowering of the corresponding telescopic column 3, allows the telescopic support beam to tilt and deflect, thus adapting to the inclination of the roadway roof, ensuring sufficient roof contact of the sliding support, improving the support's stress condition, extending its service life, reducing mine investment costs, decreasing maintenance frequency, increasing labor productivity, and facilitating roadway maintenance. When the telescopic jack 4 drives the secondary beam 2 to slide relative to the main beam 1, the position of the connecting longitudinal beam 7 in the roadway can also be adjusted, allowing the longitudinal beam 7 to avoid the original anchor cable and anchor bolt support. This prevents the longitudinal beam 7 from damaging the original anchor cable and anchor bolt support in the roadway, effectively protecting the anchor cables and anchor bolts.

[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A telescopic yaw beam mechanism for a sliding support, characterized in that: It includes a main crossbeam, two secondary crossbeams, and two telescopic columns. The main crossbeam is located between the two secondary crossbeams and is slidably connected to the two secondary crossbeams to form a telescopic support crossbeam. A telescopic jack is hinged between the main crossbeam and each of the two secondary crossbeams. The two telescopic columns are located at opposite ends of the two secondary crossbeams. The opposite ends of the two secondary crossbeams are hinged to the top of the two telescopic columns via a first pin. The first pin is horizontally set and perpendicular to the length direction of the secondary crossbeam. A balancing jack is hinged between the hinged telescopic columns and the secondary crossbeams. The upper part of the main crossbeam and the secondary crossbeams is used to install the longitudinal beam of the sliding support.

2. The telescopic yaw beam mechanism for a sliding support according to claim 1, characterized in that: Both the main crossbeam and the secondary crossbeam are box beams, and the main crossbeam and the secondary crossbeam are slidably connected.

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