In-and-out device for hydraulic support test bench and hydraulic support test bench

Abstract

The utility model relates to a hydraulic support technical field especially relates to a kind of in and out frame device for hydraulic support test bench and the hydraulic support test bench.Liquid pressure support test bench includes test bench main body and test bench pedestal, and in and out frame device includes support bottom, pushover device, ground guide rail, limiting piece;Support bottom has the limiting hole of array arrangement;Limiting piece connects limiting hole, to fix hydraulic support on support bottom;The bottom of support bottom is equipped with guide slot, and guide slot is slidably connected in the ground guide rail that is flush with test bench pedestal butt joint;Pushover device connects support bottom, and can push and pull support bottom reciprocating movement along ground guide rail and test bench pedestal, to make hydraulic support can enter and exit test bench main body.The utility model can reduce the amount of shaking when hydraulic support moves, so that it remains stable;Avoid manual operation in dangerous area, reduce security risk;Reduce the use frequency of crown block, reduce energy consumption and equipment loss, save cost.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support technology, and in particular to an in-and-out device for a hydraulic support test bench and a hydraulic support test bench. Background Technology

[0002] The hydraulic support test bench is an essential facility for safety supervision and inspection of hydraulic supports in fully mechanized coal mining faces, as well as for product inspection by manufacturing enterprises. It is a key testing device in the production and development process of hydraulic supports, primarily used for testing and verifying the technical and safety performance of hydraulic supports, and for completing type tests and factory acceptance tests. The first and final step in the hydraulic support testing process is the entry and exit of the hydraulic support onto and off the test bench; therefore, this is a crucial and indispensable step in the testing process.

[0003] Currently, there are two main methods for moving hydraulic supports into and out of test benches. One method involves using an overhead crane to hoist the hydraulic support as a whole to the test bench, securing it with wire ropes or special hooks, moving it above the test bench, and then slowly lowering it to the corresponding position on the base of the test bench. This method is inefficient, time-consuming, unstable, lacks versatility, and carries high safety risks, such as the risk of pinching or crushing injuries to workers adjusting the support position near the test bench. The other method involves moving the hydraulic support along tracks. Dedicated tracks are laid on both sides of the test bench, and the hydraulic support is moved manually or with an electric hoist. This method is safe and reliable, but requires high precision and flatness in track laying, and has high construction and maintenance costs, as well as poor flexibility. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an entry and exit device for a hydraulic support test bench and a hydraulic support test bench, which solves the technical problems of low efficiency, long entry and exit time, poor stability, poor versatility and great safety hazards in the existing crane hoisting and track translation methods for hydraulic supports entering and exiting the hydraulic support test bench.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] In a first aspect, this utility model provides an entry / exit device for a hydraulic support test bench. The hydraulic support test bench includes a test bench body and a test bench base. The entry / exit device includes a support base, a pushing device, a ground guide rail, and a limiting member. The top of the support base is provided with limiting holes, which are arranged in an array. The limiting member connects to the limiting holes to fix the hydraulic support on the support base. The support base extends along its bottom and is provided with a guide groove, which can be slidably connected to the ground guide rail. The ground guide rail and the test bench base are flush and connected. The pushing device is connected to the support base and can push and pull the support base to move back and forth along the ground guide rail and the test bench base, so that the hydraulic support can enter and exit the test bench body.

[0009] Optionally, the top of the support base is provided with at least a pair of positioning holes, which are symmetrically arranged on both sides of the top of the support base; the pushing device is a pair of pushing jacks; the pushing jacks include a fixed end and a telescopic end, the fixed end is fixed to the ground, and the telescopic end is fixedly connected to the positioning holes.

[0010] Optionally, the telescopic end includes at least three telescopic rods; the telescopic rods are fixedly connected to positioning holes.

[0011] Optionally, the end of the telescopic rod is provided with a pin hole, and the pin hole and the positioning hole are fixedly connected by a pin.

[0012] Optionally, it also includes a PLC controller, a displacement sensor, and a tilt sensor; the displacement sensor is installed on the telescopic end, and the tilt sensor is installed on the hydraulic support; the input terminals of the PLC controller are electrically connected to the displacement sensor and the tilt sensor respectively, and the output terminals of the PLC controller are electrically connected to the pushing device.

[0013] Optionally, the base guide rail extends along the length of the test bench base and is flush with the ground guide rail.

[0014] Optionally, the limiting holes are arranged in a rectangular array, with the spacing between two adjacent rows of limiting holes ranging from 100mm to 250mm, and the spacing between two adjacent columns of limiting holes ranging from 100mm to 250mm; the limiting holes are threaded holes.

[0015] Optionally, the pushing device is an electric traveling wheel mechanism; the electric traveling wheel mechanism is located at the bottom of the support base, and the base guide rail is connected to the electric traveling wheel mechanism.

[0016] Optionally, the pushing device is an AGV trolley, which pulls the support base to move the support base along the guide rail.

[0017] Secondly, this utility model provides a hydraulic support test bench, including an entry and exit device for the hydraulic support test bench; two ground guide rails are spaced apart from each other in the width direction of the test bench base and are arranged parallel to each other along the length direction of the test bench base.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this utility model are as follows: This utility model provides an entry / exit device for a hydraulic support test bench and the hydraulic support test bench itself. The hydraulic support test bench includes a test bench body and a test bench base, with guide rails provided on the test bench base. The entry / exit device includes a support base, a pushing device, and limiting components. A crane is used to hoist the hydraulic support onto the support base. The limiting holes arranged in a rectangular array on the top of the support base, in conjunction with the limiting components, fix the position of the hydraulic support, ensuring its movement stability. The rectangular array of limiting holes is applicable to various types of hydraulic supports, thus having a wide range of applications. The guide groove at the bottom of the support base slides into the guide rail, ensuring that the support base can move smoothly along a straight line. The pushing device connects to the support base, pushing and pulling the support base along the guide rail. Compared to existing technologies, this significantly shortens the time for the hydraulic support to enter and exit the hydraulic support test bench, reduces the test cycle for a single support, and improves test efficiency. Through the synergistic effect of the limiting components, limiting holes, guide grooves, and guide rails, the amount of swaying during the movement of the hydraulic support is significantly reduced, ensuring the stability of the hydraulic support during movement. This prevents personnel from entering hazardous areas and reduces safety hazards. At the same time, it reduces the frequency of overhead crane use, lowering energy consumption and equipment wear and tear, thus saving costs. Attached Figure Description

[0020] Figure 1 This is a top view schematic diagram of an embodiment of the in-and-out device for a hydraulic support test bench according to the present invention;

[0021] Figure 2 for Figure 1 A bottom view of the support base in the middle;

[0022] Figure 3 for Figure 1 A top-view diagram of the jacking mechanism;

[0023] Figure 4 for Figure 1 A schematic cross-sectional view of the support base along the plane containing the axis of a pair of positioning holes;

[0024] Figure 5 This is a front view schematic diagram of an embodiment of the infeed / outfeed device for a hydraulic support test bench according to the present invention;

[0025] Figure 6 for Figure 5 A front view schematic diagram of the hydraulic support test bench.

[0026] [Explanation of Labels in the Attached Image]

[0027] 1: Hydraulic support test bench; 11: Test bench body; 12: Test bench base; 121: Base guide rail;

[0028] 2: Bracket base; 21: Limiting hole; 22: Guide groove; 23: Positioning hole;

[0029] 3: Push jack; 31: Fixed end; 32: Telescopic end; 321: Pin hole;

[0030] 4: Limiting components;

[0031] 5: Hydraulic support. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper" and "lower" are used interchangeably with... Figure 5 The orientation is used as a reference.

[0033] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0034] Example 1:

[0035] Reference Figures 1-4 This embodiment provides an entry and exit device for a hydraulic support test bench, which includes a support base 2, a pushing device, a ground guide rail, and a limiting component 4.

[0036] The ground guide rail is laid at the rear end of the test bench base 12 and is flush with the test bench base 12, meaning the ground guide rail and the test bench base 12 are at the same height, ensuring the stability of the hydraulic support 5 during its movement in and out of the test bench body 11. The top of the support base 2 is provided with limiting holes 21, which are arranged in an array. A limiting member 4 connects to the limiting holes 21 to fix the hydraulic support 5 onto the support base 2. A pushing device is connected to the support base 2 and can push and pull the support base 2 to move back and forth along the ground guide rail and the test bench base 12, allowing the hydraulic support 5 to enter and exit the test bench body 11.

[0037] Specifically, the support base 2 is a hollow box structure welded from high-strength steel plates. Inside it, there are multiple longitudinal and transverse stiffeners perpendicular to the bottom plate of the box. The longitudinal and transverse stiffeners can transfer the load from the top plate to the bottom plate, thereby enhancing the load-bearing capacity of the entire support base 2.

[0038] More specifically, multiple longitudinal stiffeners extend along the length of the enclosure and are spaced apart along its width, with the height of the longitudinal stiffeners matching the height of the enclosure. The spacing between two adjacent longitudinal stiffeners ranges from 200mm to 300mm, and the thickness of the stiffeners ranges from 10mm to 15mm. Multiple transverse stiffeners are also arranged along the width of the enclosure and are spaced apart along its length. These transverse stiffeners are positioned between adjacent longitudinal stiffeners and between the longitudinal stiffeners and the enclosure side panels, with the height of the transverse stiffeners matching the height of the enclosure. The spacing between two adjacent transverse stiffeners ranges from 200mm to 300mm, and the thickness of the stiffeners ranges from 10mm to 15mm.

[0039] Specifically, refer to Figure 2 The top of the support base 2 is provided with multiple limiting holes 21. Preferably, the multiple limiting holes 21 are arranged in a rectangular array, the limiting holes 21 are circular in shape, the axial spacing between two adjacent rows of limiting holes 21 is 100mm-250mm, and the axial spacing between two adjacent columns of limiting holes 21 is 100mm-250mm.

[0040] It should be noted that the position of the limiting hole 21 should avoid the transverse and longitudinal stiffening plates inside the box body, and local reinforcement structures, such as thickening the stiffening plates or adding auxiliary stiffening plates, should be set on the longitudinal and transverse stiffening plates near the limiting hole 21 to compensate for the reduced local load-bearing capacity caused by the limiting hole 21.

[0041] Specifically, the limiting member 4 is fixedly connected to the limiting hole 21 by bolts or pins. The width of the limiting member 4 is greater than or equal to the width of the base of the hydraulic support 5, and the limiting member 4 is located at the rear end of the base of the hydraulic support 5 to fix the hydraulic support 5 to the support base 2. The limiting member 4 can be adjusted in position on the limiting holes 21 arranged in a rectangular array to accommodate various models of hydraulic supports 5, thereby improving the versatility of the loading and unloading device.

[0042] More specifically, the limiting component 4 can be a wedge-shaped block or a locating pin made of high-strength steel, and the limiting hole 21 can be a threaded hole. Multiple threaded holes or pin holes with the same diameter as the limiting hole 21 are provided on the front and rear sides of the wedge-shaped block. The spacing between adjacent threaded holes or pin holes on the same side is the same as the axial spacing between two adjacent rows of limiting holes 21, and the spacing between opposite threaded holes or pin holes on both sides is the same as the axial spacing between two adjacent rows of limiting holes 21. The operator uses bolts or pins to fix the wedge-shaped block to the support base 2, and it abuts against the rear end of the base of the hydraulic support 5, so that the wedge-shaped block is fixed to the support base 2 by bolts or pins.

[0043] Specifically, the bottom of the support base 2 is provided with a guide groove 22, and the guide groove 22 extends along the length of the support base 2. The guide groove 22 can be slidably connected to the ground guide rail, and the guide groove 22 and the ground guide rail are in clearance fit, so that the support base 2 can move back and forth along the ground guide rail.

[0044] Furthermore, the top of the support base 2 is provided with a pair of positioning holes 23, which are symmetrically arranged on the left and right sides of the top of the support base 2. The pushing device is specifically a pair of pushing jacks 3, each of which includes a fixed end 31 and a telescopic end 32. The fixed end 31 is fixed to the ground, and the telescopic end 32 is fixedly connected to the positioning holes 23 by bolts or pins. The pair of pushing jacks 3 are located on the left and right sides of the top of the support base 2, and their telescopic direction is parallel to the length direction of the support base 2.

[0045] Specifically, multiple high-strength bolts are pre-embedded in the ground, and the bottom of the fixed end 31 of the jack 3 is provided with multiple mounting holes that are compatible with the pre-embedded high-strength bolts, so that the high-strength bolts can be connected to the mounting holes one by one. The fixed end 31 is connected to the pre-embedded high-strength bolts by nuts, ensuring that the fixed end 31 is firmly fixed to the ground.

[0046] Alternatively, as a supplementary fixing method, the fixed end 31 can also be fixed to the ground by welding. In this case, the bottom of the fixed end 31 has a welding surface, which is firmly connected to the ground by welding, thereby achieving stable fixing of the fixed end 31. Welding fixing has the advantages of high connection strength and good stability, and can effectively resist various loads generated during the test, ensuring the reliability of the push jack 3 during operation. However, welding fixing also has certain limitations, such as the difficulty in adjusting the position of the fixed end 31 once welding is completed. Therefore, in practical applications, one or both of bolt fixing and welding fixing methods can be selected to ensure that the fixed end 31 of the push jack 3 is firmly fixed, depending on the specific test requirements and site conditions.

[0047] Specifically, refer to Figure 3 The telescopic end 32 includes three telescopic rods, with the diameters of the three rods decreasing sequentially to achieve nested telescopic movement. The length of each telescopic rod ranges from 2.5m to 3m, and the maximum stroke range of the telescopic end 32 is 7.5m to 9m. By setting up multiple telescopic rods, the telescopic end 32 can achieve a longer stroke while solving the swaying and wobble problems that occur when a single telescopic rod is long, ensuring stability when pushing the jack 3 and pulling the support base 2. Furthermore, the multiple telescopic rods facilitate disassembly and maintenance; if one telescopic rod fails, that rod can be replaced individually without replacing the entire telescopic end 32.

[0048] More specifically, when the telescopic end 32 is in its fully extended state, the end of the foremost telescopic rod (i.e., the telescopic rod with the smallest diameter) is provided with a pin hole 321. The telescopic rod is connected to the positioning hole 23 by the pin, thereby fixing the telescopic end 32 to the support base 2. This allows the support base 2 to reciprocate along the ground guide rail and the test bench base 12 as the telescopic end 32 extends and retracts. The end of the pin is tapered with a taper of 1:50 and a surface roughness Ra≤3.2μm to reduce friction and wear during connection. The diameter of the pin ranges from 50mm to 80mm. The pin and the pin hole 321 are fixed by a tapered surface fit to ensure the coaxiality of the pin and the pin hole 321.

[0049] Furthermore, to increase the travel of the support base 2, two pairs of positioning holes 23 are provided on the top of the support base 2, with each pair of positioning holes 23 symmetrically arranged on the left and right sides of the top of the support base 2, and the two pairs of positioning holes 23 spaced apart in the front-to-back direction. The telescopic end 32 can be fixed on multiple pairs of positioning holes 23 at different positions and push and pull the support base 2. When the push jack 3 pushes the support base 2 forward, and the telescopic travel of the push jack 3 reaches its maximum, the telescopic end 32 of a pair of push jacks 3 can be switched from the pair of positioning holes 23 near the front end to the pair of positioning holes 23 near the rear end, which can push the support base 2 forward again, and the maximum distance that can be moved after switching depends on the spacing between the two pairs of positioning holes 23. Similarly, three or four pairs of positioning holes 23 can also be provided to further increase the maximum travel of the support base 2.

[0050] Furthermore, the rack loading / unloading device also includes a PLC controller, a displacement sensor, and a tilt sensor.

[0051] The PLC controller is used to control the telescopic movement of the push jack 3. A displacement sensor is installed on the foremost telescopic rod of the push jack 3, which can monitor both the telescopic distance of the push jack 3 and the movement distance of the support base 2. An tilt sensor is installed on the hydraulic support 5 to monitor the tilt angle of the hydraulic support 5.

[0052] The input terminals of the PLC controller are electrically connected to the displacement sensor, the tilt sensor, and the pressure sensor installed on the push jack 3, respectively. The output terminals of the PLC controller are electrically connected to the control system of the push jack 3.

[0053] Specifically, the PLC controller synchronously controls a pair of push-pull jacks 3 based on a PID algorithm to ensure that the synchronous movement error is less than or equal to ±5mm, and can adjust the action of each push-pull jack 3 according to the data from the displacement sensor and tilt sensor. A pressure sensor monitors the hydraulic system pressure of the push-pull jacks 3 and transmits the monitored value to the PLC controller in real time. When the monitored value exceeds 110% of the rated pressure of the hydraulic system, the system activates an automatic protection program to stop the extension and retraction of the push-pull jacks 3 to prevent damage to the equipment due to excessive pressure.

[0054] It should be noted that these devices are all existing technologies and can all use commercially available products. For example, the PLC controller can be a Siemens S7-1200 or Siemens S7-200 SMART; the displacement sensor can be an existing product with an accuracy of ±0.1mm; and the tilt sensor can be an existing product with an accuracy of ±0.05°. Furthermore, the control algorithm of the PLC controller used to move the jack 3, as well as the control methods and programs between the PLC controller and the displacement and tilt sensors respectively, are all existing technologies, and this utility model does not improve upon them.

[0055] In addition, hydraulic pins are provided on both the left and right sides of the front end of the support base 2. Each hydraulic pin is equipped with a hydraulic cylinder to drive its extension and retraction. The hydraulic cylinders are connected to the hydraulic system via a control valve group, which is controlled by a PLC controller to achieve automatic locking and unlocking of the hydraulic pins. A locking hole is provided at the front end of the test bench base 12. The PLC controller monitors the position of the support base 2 based on data from the displacement sensor on the push jack 3. When the support base 2 moves to the designated position on the test bench base 12, the PLC controller controls the hydraulic cylinder to drive the hydraulic pins into the locking hole to ensure the stability of the support base 2 during the test.

[0056] This invention connects the support base 2 to the support via a pushing device, enabling the support base 2 to move smoothly along the ground guide rail. Compared to the existing overhead crane hoisting method, this invention significantly reduces the time required for a single hydraulic support 5 to enter and exit the hydraulic support test bench 1, thereby greatly improving testing efficiency. During overhead crane hoisting, the hydraulic support 5 is prone to swaying, and personnel need to enter the danger zone to operate it, which can easily cause injury to workers, posing a safety hazard. This invention, through the cooperation of the limiting hole 21 on the support base 2 and the limiting component 4, ensures the stability of the hydraulic support 5 during movement. Furthermore, the sliding connection design between the guide groove 22 and the ground guide rail further improves the smoothness of movement, effectively avoiding the swaying and offset problems of the hydraulic support 5 caused by uneven tracks in the track translation method. The limiting holes 21 on the top of the support base 2 are arranged in a rectangular array, which can accommodate various models of hydraulic supports 5, providing good versatility. This invention also uses an automatic locking mechanism to fix the support base 2 to the test bench base 12, which further improves the positioning accuracy of the support base 2 and ensures the stability and reliability of the test process.

[0057] In a specific embodiment, the moving device can also be an electric traveling wheel mechanism, a common prior art that typically includes components such as a motor, a reducer, and traveling wheels. The motor drives the traveling wheels to rotate through the reducer, thereby realizing the movement of the support base 2. The electric traveling wheel mechanism is located at the bottom of the support base 2.

[0058] More specifically, the bottom of the support base 2 is connected to the traveling wheel axle of the electric traveling wheel mechanism via a connecting plate. A pair of coaxial traveling wheels are installed on the left and right sides of the support base 2, and multiple pairs of traveling wheels are provided on the front and rear sides. The connecting plate has mounting holes, and is fixed to the bottom of the support base 2 with bolts. Simultaneously, the traveling wheel axle is mounted on the connecting plate via bearings, ensuring the traveling wheels can rotate freely. Each pair of traveling wheels is located inside the ground guide rail and rolls along the side of the ground guide rail, ensuring stability during rolling. To reduce friction and wear between the traveling wheels and the side of the ground guide rail, the side of the ground guide rail and the traveling wheels need to be lubricated regularly. Lubricating oil or grease can be used; the appropriate lubricant should be selected based on the operating environment and load requirements.

[0059] In a specific embodiment, the pushing device can also be an AGV trolley. AGV trolleys are existing technology, and this utility model does not improve their specific structure and working principle. Workers can select different models of AGV trolleys according to specific needs.

[0060] Specifically, the AGV trolley's body is made of high-strength steel, and its front end is equipped with a push rod. Correspondingly, the rear end of the support base 2 is equipped with a push rod insertion hole, which is fixedly connected to the AGV trolley's push rod by a pin or bolt, so that the AGV trolley can push and pull the support base 2 to move back and forth along the ground guide rail.

[0061] Example 2:

[0062] Based on Example 1, the test bench base 12 extends along the length direction and is provided with a base guide rail 121, which is flush with and connected to the ground guide rail.

[0063] The base guide rail 121 enables the support base 2 to continue moving along a straight path after leaving the ground guide rail, ensuring accurate positioning on the test bench base 12 and reducing positioning errors. The base guide rail 121 is flush with the ground guide rail, avoiding impact and vibration caused by changes in height between the ground guide rail and the base guide rail 121, thereby ensuring the stability of the hydraulic support during entry and exit from the frame.

[0064] Example 3:

[0065] Reference Figure 5 and Figure 6 This embodiment provides a hydraulic support test bench, including the infeed and outfeed device in embodiment 1.

[0066] The hydraulic support test bench 1 includes a test bench body 11 and a test bench base 12. The hydraulic support test bench 1 is a professional instrument used to test key indicators such as the sealing performance, support performance, and strength of the hydraulic support 5.

[0067] The main body 11 of the test bench mainly includes columns, movable beams, hydraulic cylinders, and an automatic measurement and control system. The columns are typically vertical support structures made of high-strength steel, evenly distributed on the test bench base 12, providing a stable support frame for the entire hydraulic support test bench and bearing various loads generated by the hydraulic support 5 during the test, including vertical loads, horizontal loads, and possible overturning moments. The movable beams are the main components used to apply loads to the hydraulic support 5; they are generally rectangular or square metal frame structures and can move up and down along the columns via hydraulic cylinders or other driving devices to accommodate hydraulic supports of different heights. The hydraulic cylinders are used to apply loads to the hydraulic support 5; their number and arrangement are adjusted according to test requirements. Multiple hydraulic cylinders can generally be set up for vertical loading, horizontal loading, and multi-angle support tests, simulating various load conditions under actual working conditions. The automatic measurement and control system includes various sensors and a computer control system, capable of automatically controlling the movement of loading components such as hydraulic cylinders according to a preset test program, achieving automated control of the test process, generating test reports, and recording data and results during the test for subsequent analysis and research.

[0068] The test bench base 12 is used to support the entire test bench body 11 and the hydraulic support, providing a stable support foundation for the test bench body 11 and ensuring that the test bench remains stable during the test.

[0069] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0070] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0071] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An infeed / outfeed device for a hydraulic support test bench, the hydraulic support test bench (1) comprising a test bench body (11) and a test bench base (12), characterized in that, The in-and-out rack device includes a support base (2), a pushing device, a ground guide rail, and a limiting component (4). The top of the bracket base (2) is provided with limiting holes (21), and the limiting holes (21) are arranged in an array; The limiting member (4) is connected to the limiting hole (21) to fix the hydraulic support (5) on the support base (2); The support base (2) has a guide groove (22) extending along its bottom, and the guide groove (22) can be slidably connected to the ground guide rail; The ground guide rail and the test bench base (12) are flush and connected; The pushing device is connected to the support base (2) and can push and pull the support base (2) to move back and forth along the ground guide rail and the test bench base (12) so that the hydraulic support (5) can enter and exit the test bench body (11).

2. The loading and unloading device for a hydraulic support test bench as described in claim 1, characterized in that: The top of the bracket base (2) is provided with at least one pair of positioning holes (23), and the positioning holes (23) are symmetrically arranged on both sides of the top of the bracket base (2); The pushing device is a pair of pushing jacks (3); The push jack (3) includes a fixed end (31) and a telescopic end (32). The fixed end (31) is fixed to the ground, and the telescopic end (32) is fixedly connected to the positioning hole (23).

3. The loading / unloading device for a hydraulic support test bench as described in claim 2, characterized in that: The telescopic end (32) includes at least three telescopic rods; The telescopic rod is fixedly connected to the positioning hole (23).

4. The loading / unloading device for a hydraulic support test bench as described in claim 3, characterized in that: The telescopic rod is provided with a pin hole (321) at its end, and the pin hole (321) and the positioning hole (23) are fixedly connected by a pin.

5. The loading / unloading device for a hydraulic support test bench as described in claim 4, characterized in that: It also includes a PLC controller, displacement sensors, and tilt sensors; The displacement sensor is installed on the telescopic end (32), and the tilt sensor is installed on the hydraulic support; The input terminals of the PLC controller are electrically connected to the displacement sensor and the tilt sensor, respectively, and the output terminal of the PLC controller is electrically connected to the pushing device.

6. The loading and unloading device for a hydraulic support test bench as described in claim 1, characterized in that: The base guide rail (121) extends along the length of the test bench base (12) and is flush with the ground guide rail.

7. The loading / unloading device for a hydraulic support test bench as described in claim 1, characterized in that: The limiting holes (21) are arranged in a rectangular array. The spacing between two adjacent rows of the limiting holes (21) is 100mm-250mm, and the spacing between two adjacent columns of the limiting holes (21) is 100mm-250mm. The limiting hole (21) is a threaded hole.

8. The loading / unloading device for a hydraulic support test bench as described in claim 6, characterized in that: The pushing device is an electric traveling wheel mechanism; The electric running wheel mechanism is located at the bottom of the support base (2), and the base guide rail (121) is connected to the electric running wheel mechanism.

9. The loading and unloading device for a hydraulic support test bench as described in claim 1, characterized in that: The pushing device is an AGV trolley, which pulls the support base (2) so that the support base (2) moves along the guide rail (121).

10. A hydraulic support test bench, characterized in that, Includes an infeed / outfeed device for a hydraulic support test bench according to any one of claims 1-9; The two ground guide rails are spaced apart from each other in the width direction of the test bench base (12) and are arranged parallel to each other in the length direction of the test bench base (12).

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