Movable vertical loading device and use method

Abstract

The invention discloses a movable vertical loading device and a using method, and belongs to the technical field of engineering application, the device comprises a loading cross beam, a walking track and a walking oil cylinder which are arranged on a model box, the loading cross beam comprises a beam body and supports arranged at the lower ends of the two sides of the beam body, the supports are arranged on the walking track in a sliding mode, and the walking oil cylinder is arranged on the beam body. The free end of the walking oil cylinder is connected with a support of the loading cross beam through a hinge device, the walking oil cylinder is connected to the upper end of the side wall of the model box through a fixing device, and a using method is provided based on the device. The vertical loading device capable of freely moving is arranged at the top of the frame type model test box, and the walking oil cylinder is matched with the walking track to drive one or more loading cross beams to move on the walking track at the bottom, so that the purpose of vertical loading at any position of the top of the model can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering applications, and in particular to a movable vertical loading device and a use method thereof. Background Art

[0002] In the fields of geotechnical engineering and structural engineering, it is usually necessary to conduct a study on the interaction system of adverse geological bodies, prevention and control structures, and railway (highway) projects through frame model tests, so as to analyze the stress-deformation characteristics of the prevention and control structures and railway (highway) projects.

[0003] In the process of frame model testing, it is usually necessary to geometrically generalize some sections of the prototype that include prevention and control structures and railway (highway) projects as the research object, and simulate the effect of unfavorable geological bodies on prevention and control structures and railway (highway) projects by applying reasonable force or displacement boundary conditions to the model boundaries.

[0004] Currently, the existing frame-type model test chamber can usually only apply force or displacement boundary conditions in the horizontal direction of the side of the model, and in the test design, it is also necessary to simultaneously apply force or displacement boundary conditions at different positions in the vertical direction of the top of the model, but the existing frame-type model test chamber cannot meet this requirement.

[0005] In view of the above problems, the present invention proposes a movable vertical loading device and a use method to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a movable vertical loading device and a method of using the same. By arranging a freely movable vertical loading device on the top of a frame-type model test box, one or more loading beams are driven to move on the walking track at the bottom through the cooperation of a traveling cylinder and a traveling track, thereby achieving the purpose of vertical loading at any position on the top of the model.

[0007] To achieve the above-mentioned purpose, the present invention provides a movable vertical loading device, including a loading beam, a walking track, and a walking cylinder arranged on a model box. The loading beam can be set to multiple, and the loading beam includes a beam body and supports arranged at the lower ends of both sides of the beam body. The supports are slidably arranged on the walking track. The free end of the walking cylinder is connected to the support of the loading beam through a hinge device, and the walking cylinder is connected to the upper end of the side wall of the model box through a fixing device.

[0008] Preferably, the beam body and the support of the loading beam are both provided with reinforcing ribs, so that the loading beam is more stable during the test; and a connection interface for connecting a vertical loading device is provided at the bottom of the beam body.

[0009] Preferably, a triangular lateral support plate is provided between the beam body and the support, and the beam body, the support and the lateral support plate are all welded together. A plurality of through holes are provided between the gaps between the lateral support plate and the support, and the through holes are arranged in two rows, with 6 holes in each row. The through holes are arranged to connect the support of the loading beam with the top of the side wall of the model box.

[0010] Preferably, connection blocks for connecting multiple loading beams are provided on the inner and outer sides of the support.

[0011] Preferably, a slider is welded to the lower end of the support, and the slider is slidably connected to the walking track, and the walking track is arranged on the top of the side wall of the model box.

[0012] Preferably, a displacement sensor is provided on the traveling cylinder.

[0013] Preferably, the fixing device and the model box, the connecting blocks of adjacent loading beams, and the loading beam and the model box are all connected by connecting screws.

[0014] The present invention proposes a method of using the above device, comprising the following steps: S1. Connect multiple loading beams through connecting blocks according to design requirements, connect the vertical loading device to the lower end of the beam body of the loading beam, and remove the connecting screw between the support of each loading beam and the top of the side wall of the model box; S2, connecting the travel cylinder to the top of the side wall of the model box through a fixing device, and connecting the travel cylinder to a support of a loading beam closest to the travel cylinder through a hinge device; S3, control the travel cylinder to open, and push or pull the loading beam to move on the travel track through the travel cylinder; S4. After one cylinder stroke is completed, the connecting screw between the fixing device and the top of the side wall of the model box is removed to reset the piston of the travel cylinder; S5, repeating steps S3 and S4, so that the loading beam connected to the travel cylinder at the farthest distance moves to a predetermined position; S6. Connect the support of the loading beam that is the farthest from the traveling cylinder to the top of the side wall of the model box through a connecting screw to fix it, and remove the connecting screw between the connecting block of the loading beam and the connecting block of the adjacent loading beam; S7, repeat S5 and S6 until all loading beams are fixed at the predetermined positions; S8. Remove the connecting screws between the fixing device and the top of the side wall of the model box, remove the travel cylinder, and start the loading test.

[0015] Preferably, in S3-S7, the position of the loading beam is determined by a displacement sensor.

[0016] Therefore, the present invention provides a movable vertical loading device and a method of use. By arranging a freely movable vertical loading device on the top of a frame-type model test box, one or more loading beams are driven to move on the walking track at the bottom through the cooperation of a traveling cylinder and a traveling track, thereby achieving the purpose of vertical loading at any position on the top of the model, and providing an effective experimental application approach for frame-type model tests in the fields of geotechnical engineering and structural engineering.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 is a cross-sectional view of an embodiment of the present invention; Figure 3 A top view of an embodiment of the present invention; Figure 4 A schematic diagram of the connection between the travel cylinder and the loading beam according to an embodiment of the present invention; Figure 5 A schematic diagram of the connection between two adjacent loading beams according to an embodiment of the present invention; Reference numerals: 1. Travel track; 2. Travel cylinder; 3. Beam body; 4. Support; 5. Lateral support plate; 6. Through hole; 7. Connecting block; 8. Slider; 9. Articulated device; 10. Fixing device. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0021] Example

[0022] like Figure 1-5 As shown, the present invention provides a movable vertical loading device, including a loading beam arranged on a model box, a walking track 1, and a walking cylinder 2. The loading beam can be set to multiple, and the loading beam is a steel structure. The loading beam includes a beam body 3 and supports 4 arranged at the lower ends of both sides of the beam body 3.

[0023] The middle of the beam body 3 is a box-shaped section, and both sides are a section of variable section, which is welded to the support 4. The support 4 has a box-shaped section. Reinforcement plates are arranged inside the beam body 3 and the support 4 (not shown in the figure, and the setting form is a conventional setting form), so that the loading beam is more stable during the test; a connection interface for connecting a vertical loading device is provided at the bottom of the beam body 3 (not shown in the figure, and the connection interface is a conventional setting, and the vertical loading device is fixed at the connection interface by bolts), and the loading beam can apply boundary conditions of force or displacement in the vertical direction to the model through the loading device fixed at its bottom.

[0024] A triangular lateral support plate 5 is arranged between the beam body 3 and the support 4 to prevent the loading beam from becoming unstable during the test; the beam body 3, the support 4 and the lateral support plate 5 are all welded together, and a plurality of through holes 6 are arranged between the lateral support plate 5 and the support 4. The through holes 6 are arranged in two rows, with 6 holes in each row. The through holes 6 are arranged to connect the support 4 of the loading beam to the top of the side wall of the model box by connecting screws.

[0025] The inner side and the outer side of the support 4 are both provided with connecting blocks 7 for connecting multiple loading beams. The connecting blocks 7 are provided with openings, and the multiple loading beams are connected together by connecting screws.

[0026] A slider 8 is welded to the lower end of the support 4, and the slider 8 is slidably connected to the walking track 1. The slider 8 is placed between the loading beam and the walking track 1 to reduce the friction of the loading beam when it moves on the walking track 1; the walking track 1 is set at the top of the side wall of the model box to guide the movement of the loading beam and transmit the reaction force when the loading beam is loaded.

[0027] The free end of the traveling cylinder 2 is connected to the support 4 of the loading beam through a hinge device 9, and drives the loading beam to move by moving forward and backward; the traveling cylinder 2 is connected to the upper end of the side wall of the model box through a fixing device 10, and the fixing device 10 is provided with two connecting holes. The fixing device 10 can be connected to the top of the side wall of the model box through a connecting screw, which is used to fix the traveling cylinder and transmit the reaction force during the movement of the loading beam.

[0028] The travel cylinder 2 is provided with a displacement sensor (not shown), which can realize closed-loop control through the control system, thereby synchronously pushing or pulling one or more connected loading beams.

[0029] Based on the above device, a method of use is proposed, comprising the following steps: S1. Connect multiple loading beams through connecting blocks 7 according to design requirements, connect the vertical loading device to the lower end of the beam body 3 of the loading beam, and remove the connecting screw between the support 4 of each loading beam and the top of the side wall of the model box; S2, connecting the travel cylinder 2 to the top of the side wall of the model box through the fixing device 10, and connecting the travel cylinder 2 to the support 4 of a loading beam closest to the travel cylinder through the hinge device 9; S3, control the travel cylinder 2 to open, and push or pull the loading beam to move on the travel track 1 through the travel cylinder 2; S4, after one cylinder stroke is completed, the connecting screw of the fixing device 10 and the top of the side wall of the model box is removed to reset the piston of the travel cylinder 2; S5, repeating steps S3 and S4, so that the loading beam connected to the travel cylinder 2 at the farthest distance moves to a predetermined position; S6, connect the support 4 of the loading beam that is the farthest from the traveling cylinder 2 to the top of the side wall of the model box through a connecting screw to fix it, and remove the connecting screw between the connecting block 7 of the loading beam and the connecting block 7 of the adjacent loading beam; S7, repeat S5 and S6 until all loading beams are fixed at the predetermined positions; S8. Remove the connecting screws between the fixing device 10 and the top of the side wall of the model box, remove the travel cylinder 2, and start the loading test.

[0030] Therefore, the present invention provides a movable vertical loading device and a method of use. By setting a freely movable vertical loading device on the top of a frame-type model test box, one or more loading beams are driven to move on the walking track at the bottom through the cooperation of a traveling cylinder and a traveling track, thereby achieving the purpose of vertical loading at any position on the top of the model.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A movable vertical loading device, characterized in that: It includes a loading beam, a traveling track, and a traveling cylinder arranged on the model box. The loading beam includes a beam body and supports arranged at the lower ends of both sides of the beam body. The supports are slidably arranged on the traveling track. The free end of the traveling cylinder is connected to the support of the loading beam through a hinge device, and the traveling cylinder is connected to the upper end of the side wall of the model box through a fixing device.

2. A movable vertical loading device according to claim 1, characterized in that: The beam body and the support of the loading crossbeam are both provided with reinforcing rib plates, and a connection interface for connecting a vertical loading device is provided at the bottom of the beam body.

3. A movable vertical loading device according to claim 2, characterized in that: A triangular lateral support plate is arranged between the beam body and the support. The beam body, the support and the lateral support plate are all welded together. A plurality of through holes are arranged between the gap between the lateral support plate and the support.

4. A movable vertical loading device according to claim 3, characterized in that: The inner side and the outer side of the support are both provided with connection blocks for connecting multiple loading beams.

5. A movable vertical loading device according to claim 4, characterized in that: A sliding block is welded to the lower end of the support, and the sliding block is slidably connected to the walking track, and the walking track is arranged on the top of the side wall of the model box.

6. A movable vertical loading device according to claim 5, characterized in that: A displacement sensor is arranged on the traveling oil cylinder.

7. A movable vertical loading device according to claim 6, characterized in that: The fixing device and the model box, the connecting blocks of the adjacent loading beams, and the loading beam and the model box are all connected by connecting screws.

8. A method for using the movable vertical loading device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Connect multiple loading beams through connecting blocks according to design requirements, connect the vertical loading device to the lower end of the beam body of the loading beam, and remove the connecting screw between the support of each loading beam and the top of the side wall of the model box; S2, connecting the travel cylinder to the top of the side wall of the model box through a fixing device, and connecting the travel cylinder to a support of a loading beam closest to the travel cylinder through a hinge device; S3, control the travel cylinder to open, and push or pull the loading beam to move on the travel track through the travel cylinder; S4. After one cylinder stroke is completed, the connecting screw between the fixing device and the top of the side wall of the model box is removed to reset the piston of the travel cylinder; S5, repeating steps S3 and S4, so that the loading beam connected to the travel cylinder at the farthest distance moves to a predetermined position; S6. Connect the support of the loading beam that is the farthest from the traveling cylinder to the top of the side wall of the model box through a connecting screw to fix it, and remove the connecting screw between the connecting block of the loading beam and the connecting block of the adjacent loading beam; S7, repeat S5 and S6 until all loading beams are fixed at the predetermined positions; S8. Remove the connecting screws between the fixing device and the top of the side wall of the model box, remove the travel cylinder, and start the loading test.

9. The method for using the movable vertical loading device according to claim 8, characterized in that: In S3-S7, the position of the loading beam is determined by a displacement sensor.

Images