Hydraulic support test bed protection side loading test device

Abstract

The utility model relates to the technical field of side protection loading tests, in particular to a side protection loading test device for a hydraulic support test bed, which comprises a main body part, a flitch is arranged above the main body part, the other side of the flitch is fixed with a top beam of the test bed, and a plurality of groups of connecting lug plates are fixed on one side surface of the flitch. Two hinge holes are formed in each set of connecting lug plates, one side face of the main body part is hinged to the connecting lug plates by arranging first hinge shafts in the hinge holes, an auxiliary connecting part is hinged to the lower end of the other side face of the main body part, and a T-shaped groove lug plate is hinged to the other end of the auxiliary connecting part. The device has the advantages of being simple in structure, high in test strength and reliable in fixed connection mode.

Description

Technical Field

[0001] The utility model relates to the technical field of side guard loading test, in particular to a side guard loading test device for a hydraulic support test bench. Background Art

[0002] According to GB25974.1-2010 General Technical Conditions for Hydraulic Support, the guardrail test is divided into guardrail torsion test as follows: Figure 2 And the reversible guard concentrated loading test Figure 3 To meet the two test conditions, the existing guardrail test device is designed to be reversible: Figure 1 As shown, the top beam 1 of the test bench and the top beam 3 of the guard rail test device are hinged by a hinge shaft 5, and the jack 2 can be extended or extended to adjust the angle of the top beam 3 of the guard rail test device, thereby realizing two guard rail test working conditions.

[0003] When conducting Figure 3 During the concentrated loading test of the guardrail, when the top beam 3 of the guardrail test device is in a horizontal state, the jack 2 is also approximately horizontal at this time, and the jack 2 has only two hinge points, which belongs to a two-force rod. The forces at the two hinge points are also approximately horizontal, and the top beam 3 of the guardrail test device is subjected to a large overturning moment, so the hinge points at the hinge holes 4 and 6 are also subjected to the vertical force component, and the angle between the vertical force component and the resultant force direction is large, and the hinge hole 5 is subjected to a large force under the action of the moment, so the three hinge holes are easily deformed and damaged, and the hinge ears are also easily damaged;

[0004] In progress Figure 2 During the torsional loading test of the guardrail, the top beam 3 of the guardrail test device is in a vertical state. Although this condition is not as severe as the stress condition of the guardrail concentrated loading test, the jack 2 also needs to have a larger specification to meet the test capacity. When testing large hydraulic supports, the test capacity is insufficient. Utility Model Content

[0005] In order to solve the above technical problems, the utility model specifically adopts the following technical solutions.

[0006] A hydraulic support test bench guard loading test device is designed, including a main body part, a plate is arranged above the main body part, the other side of the plate is fixed to the test bench top beam, a plurality of groups of connecting ear plates are fixed on one side of the plate, two hinge holes are respectively provided on each group of connecting ear plates, one side of the main body part is hinged to the connecting ear plate by arranging a hinge axis in the hinge hole, an auxiliary connecting part is hinged at the lower end of the other side of the main body part, and the other end of the auxiliary connecting part is hinged to a T-slot ear plate.

[0007] Preferably, a plurality of connecting plates corresponding one to one with each group of connecting ear plates are fixed on one side of the main body part, and one end of each connecting plate extends into the corresponding connecting ear plate and is fixedly connected via a hinge shaft.

[0008] Preferably, the pasting plate is fixed to the multiple groups of connecting ear plates by welding.

[0009] Preferably, both ends of the auxiliary connecting part are respectively hinged to the T-slot ear plate and the auxiliary connecting part through hinge shaft 2.

[0010] The beneficial effects of the utility model are:

[0011] The utility model implements the two projects of guard side torsion test and guard side concentrated loading test separately. The concentrated loading test project is tested in the top plate of the test bench top beam, which effectively avoids the situation where the hinged ear is easily damaged. During the guard side torsion test, the guard side test device forms a stable triangular structure with the test bench top beam through the auxiliary connecting part, which has higher test strength and more reliable fixing and connection method.

[0012] The main body of the central guard testing device of the utility model is hinged and fixed with the ear plates through two hinge shafts, which limits the rotational freedom of the testing device and makes the force of the main body completely concentrated on the two hinge pairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the prior art;

[0014] Figure 2 It is a structural schematic diagram of a torsion loading test of a side guard plate in the prior art;

[0015] Figure 3 It is a structural schematic diagram of a concentrated loading test of a reversible side guard plate in the prior art;

[0016] Figure 4 The overall structural diagram of the utility model structure;

[0017] Figure 5 It is a right view structural schematic diagram of the utility model;

[0018] Figure 6 It is a left-side structural schematic diagram of the utility model;

[0019] The numbers in the figure are: 8 connecting plate, 9 pasting plate, 10 connecting ear plate, 11 main body part, 12 auxiliary connecting part, 13 hinge axis one, 14 hinge axis two, 15 T-shaped groove ear plate. DETAILED DESCRIPTION

[0020] 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. Example

[0021] A hydraulic support test bench guard loading test device, such as Figures 4 to 6 As shown, it includes a main body part 11, a plate 9 is provided above the main body part 11, the other side of the plate 9 is welded and fixed to the top beam of the test bench, and a plurality of connecting ear plates 10 are welded and fixed to one side of the plate 9.

[0022] Two hinge holes are respectively provided on each group of connecting ear plates 10, and the two hinge holes are vertically distributed on a straight line. One side of the main body 11 is hinged to the connecting ear plate 10 by setting a hinge shaft 13 in the hinge hole. Specifically, a plurality of connecting plates 8 corresponding to each group of connecting ear plates 10 are fixed on one side of the main body 11, and one end of each connecting plate 8 is respectively extended and set in the corresponding connecting ear plate 10, and fixedly connected by a hinge shaft 13. The main body 11 of the guard test device is hinged and fixed to the ear plate 10 by two hinge shafts 13, so that the loading test plane of the main body 11 is in a vertical state with the top beam of the test bench, and the rotational freedom of the main body of the guard test device is constrained, so that the force of the main body 11 acts entirely on the two hinge pairs, and the hinge pairs are matched with φ100H8 / h8.

[0023] An auxiliary connecting part 12 is hinged at the lower end of the other side of the main part 11, and a T-slot ear plate 15 is hinged at the other end of the auxiliary connecting part 12. Specifically, the two ends of the auxiliary connecting part 12 are respectively hinged to the T-slot ear plate 15 and the auxiliary connecting part 12 through a hinge shaft 14. After the T-slot ear plate 15 at the other end of the auxiliary connecting part 12 is fixed, the auxiliary connecting part 12 and the test bench form a triangular stable structure, which can withstand a large torque and meet the 10-meter bracket guard test.

[0024] The solution in this utility model mainly meets the general technical requirements of GB25974.1-2010 hydraulic support. Figure 1 The torsion test of the guardrail in Figure 2 During the concentrated loading test of the guard, the bracket moves backward to a suitable position through the inlet and outlet device of the test bench, the guard is opened to a horizontal state, and the guard is completely within the range of the top beam and top plate of the test bench. Compared with the prior art that uses the guard device as a test load, this utility model realizes the concentrated loading test through the test bench itself. In summary, the two guard test conditions are both aimed at solving the problem of relatively large test loads and ensuring the reliability of the test plan.

[0025] 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 hydraulic support test bench guard loading test device, characterized in that: The invention comprises a main body part (11), a plate (9) is provided above the main body part (11), the other side of the plate (9) is fixed to the top beam of the test bench, a plurality of groups of connecting ear plates (10) are fixed to one side of the plate (9), two hinge holes are provided on each group of connecting ear plates (10), one side of the main body part (11) is hinged to the connecting ear plate (10) by arranging a hinge shaft (13) in the hinge hole, an auxiliary connecting part (12) is hinged to the lower end of the other side of the main body part (11), and the other end of the auxiliary connecting part (12) is hinged to a T-slot ear plate (15).

2. The hydraulic support test bench guard loading test device according to claim 1 is characterized in that: A plurality of connecting plates (8) corresponding one to one with each group of connecting ear plates (10) are fixed on one side of the main body portion (11), and one end of each connecting plate (8) extends into the corresponding connecting ear plate (10) and is fixedly connected via a hinge shaft (13).

3. The hydraulic support test bench guard loading test device according to claim 1 is characterized in that: The pasting plate (9) is fixed to the plurality of groups of connecting ear plates (10) by welding.

4. The hydraulic support test bench guard loading test device according to claim 1 is characterized in that: The two ends of the auxiliary connecting part (12) are respectively hinged to the T-shaped slot ear plate (15) and the auxiliary connecting part (12) through a second hinge shaft (14).

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