Strength detection device for intelligent lining trolley with four-leg portal

Abstract

The utility model relates to a strength detection device for a four-leg portal intelligent lining trolley, and effectively solves the problems that the existing detection equipment is single in function, higher in omission factor and incapable of simulating the composite stress state when the whole trolley is in service. According to the strength detection device for the intelligent four-leg portal lining trolley, the concrete pouring load actually borne by the lining trolley during use is simulated through the first pressurizing mechanism, the concrete side pressure is simulated through the second pressurizing mechanism, and the side pressures in different directions can be applied respectively; therefore, the change of the overall strength of the lining trolley when the lining trolley is subjected to side pressure in different directions can be simulated conveniently, and the composite stress condition of the lining trolley during use can be simulated more truly. And through the transverse sliding block and the translation sliding block, the device can conveniently carry out pressurization detection on different parts on the lining trolley, so that the whole lining trolley is fully detected, the omission ratio is reduced, and it is guaranteed that the overall strength of the lining trolley can be fully detected.

Description

Technical Field

[0001] This utility model belongs to the technical field of lining trolley testing devices, specifically relating to a strength testing device for a four-legged gantry intelligent lining trolley. Background Technology

[0002] Tunnel lining trolleys are specialized equipment essential for secondary lining in tunnel construction, used for the concrete lining of the tunnel's inner walls. Concrete lining trolleys are indispensable non-standard products in secondary lining during tunnel construction, mainly including simple lining trolleys, fully hydraulic automatic walking lining trolleys, and grid-type lining trolleys. With the expansion of railway / highway tunnel construction, four-legged gantry intelligent lining trolleys have become the mainstream equipment due to their strong load-bearing capacity (≥800kN) and large span (8-16m).

[0003] However, in the production and manufacturing process of lining trolleys, the current testing equipment mainly relies on material testing machines (such as universal testing machines) or single component loading equipment (such as presses), which can only verify the strength of individual parts (such as legs and main beams) and cannot simulate the composite stress state of the trolley as a whole during service. Moreover, the existing testing equipment has limited functions and is not convenient for strength testing of different parts of the top of the lining trolley, resulting in a high rate of missed detections. Therefore, it is not convenient to detect whether the overall production of the lining trolley meets the standards. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a strength testing device for a four-legged gantry intelligent lining trolley. This strength testing device for a four-legged gantry intelligent lining trolley can more realistically simulate the stress situation of the lining trolley during use, and can facilitate pressure testing on different parts of the lining trolley, thereby fully testing the lining trolley as a whole, reducing the missed detection rate, and ensuring that the overall strength of the lining trolley can be fully tested.

[0005] A strength testing device for a four-legged intelligent lining trolley includes a base plate and a top support. A transverse sliding seat is fixedly connected to the upper surface of the base plate, and a first drive assembly is disposed inside the transverse sliding seat. A transverse slider is slidably connected to the outside of the transverse sliding seat and is drivenly connected to the first drive assembly. An adjustable lifting mechanism is disposed on the upper surface of the transverse slider, and the top support is fixedly connected to the top of the lifting mechanism. A second drive assembly is disposed inside the top support, and a translation slider that is drivenly connected to the second drive assembly is slidably connected to the inside of the top support. A fixed plate is fixedly connected to the lower surface of the translation slider. A first pressing mechanism that can apply vertical force to the lining trolley is disposed at the center of the lower surface of the fixed plate, and a second pressing mechanism that can apply oblique force to the lining trolley is disposed around the lower surface of the fixed plate.

[0006] Preferably, both sides of the lower surface of the top support are provided with a lifting adjustment mechanism, a horizontal sliding seat and a base plate, and are arranged symmetrically with the vertical center line of the top support as the axis of symmetry.

[0007] Preferably, the first pressurization mechanism includes a first cylinder, a first pressure plate, and a first pressure sensor. The fixed cylinder body of the first cylinder is vertically fixedly connected to the center of the lower surface of the fixed plate, and the first pressure plate is fixedly connected to the bottom end of the movable rod of the first cylinder. The number of the first pressure sensors is four, and the four first pressure sensors are fixedly installed on the upper surface of the first pressure plate in the form of a ring array.

[0008] Preferably, the second pressurizing mechanism includes a second cylinder, a second pressurizing plate, and a second pressure sensor. The top end of the fixed cylinder body of the second cylinder is hinged to the lower surface of the fixed plate via a ball joint, and the bottom end of the movable rod body is hinged to the upper surface of the second pressurizing plate via a ball joint. The second cylinder is in an inclined state, and its bottom end is inclined towards the axis of the first pressurizing mechanism. There are four second cylinders, and the four second cylinders are arranged in a ring array between the fixed plate and the second pressurizing plate. There are four second pressure sensors, and the four second pressure sensors are fixedly installed on the upper surface of the second pressurizing plate in a ring array.

[0009] Preferably, the detection ends of the first pressure sensor and the second pressure sensor are respectively inserted through the lower surfaces of the first pressure plate and the second pressure plate, and the second pressure plate is sleeved on the outside of the first pressure plate and the lower surfaces of the two are at the same horizontal plane.

[0010] Preferably, the first drive assembly includes a first geared motor and a first lead screw. The first lead screw is connected to the output end of the first geared motor via a spline and is rotatably connected inside the transverse sliding seat. The transverse slider is slidably connected to the outside of the transverse sliding seat and is connected to the outside of the first lead screw via a threaded drive.

[0011] Preferably, the lifting and adjusting mechanism includes a first sleeve rod, a gear rod, a second sleeve rod, a plug rod, a spur gear rod, and a second reduction motor. The first sleeve rod has a second sleeve rod on both sides, and both the first and second sleeve rods are vertically fixed to the upper surface of the horizontal slider. The gear rod and plug rod are vertically inserted into the interior of the first and second sleeve rods, respectively. The upper surface of the horizontal slider has a first sleeve rod fixedly connected to both sides, and a spur gear rod is rotatably connected to the top of the sides of the two first sleeve rods. The spur gear rod is connected via a spline to the output end of the second reduction motor and is drively connected to both gear rods. The second reduction motor is fixedly installed on the top of one of the sides of the first sleeve rod, and the top bracket is fixedly connected to the top of the gear rod and the plug rod.

[0012] Preferably, the second drive assembly includes a third geared motor and a second lead screw. The second lead screw is horizontally rotatably connected to the middle of the top bracket and connected to the output end of the third geared motor via a spline. The third geared motor is fixedly installed on the side of the top bracket. Guide rods are fixedly connected to both sides inside the top bracket, and a translation slider is slidably connected to the outside of the two guide rods and connected to the outside of the second lead screw via a threaded drive.

[0013] The beneficial effects of the above technical solution are as follows:

[0014] This strength testing device for a four-legged gantry intelligent lining trolley utilizes a horizontal slider, a lifting adjustment mechanism, a translation slider, a first pressurizing mechanism, and a second pressurizing mechanism. The lifting adjustment mechanism can be adjusted according to the height of the lining trolley to be tested, allowing the first and second pressurizing mechanisms to abut against the top of the lining trolley. The first pressurizing mechanism applies vertical pressure to the lining trolley, simulating the concrete pouring load actually experienced during use. Simultaneously, the second pressurizing mechanism applies lateral force to the lining trolley, simulating the lateral pressure of concrete. The second pressurizing mechanism can apply lateral pressure in different directions, facilitating the simulation of changes in the overall strength of the lining trolley under different lateral pressures, and providing a more realistic simulation of the combined stress conditions experienced by the lining trolley during use. Furthermore, the horizontal and translation sliders allow for easy adjustment of the horizontal positions of the first and second pressurizing mechanisms, facilitating pressure testing on different parts of the lining trolley. This ensures a thorough overall strength test of the lining trolley, reducing the rate of missed tests and guaranteeing a comprehensive assessment of the lining trolley's overall strength. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the second drive component and the translation slider of this utility model in their disassembled state;

[0017] Figure 3 This is a schematic diagram of the disassembled lifting and adjusting mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram showing the first and second pressurizing mechanisms of this utility model in their disassembled state.

[0019] In the diagram: 1. Base plate; 2. Top bracket; 3. Horizontal sliding seat; 4. Horizontal slider; 5. Translation slider; 6. Fixed plate; 7. First cylinder; 8. First pressure plate; 9. First pressure sensor; 10. Second cylinder; 11. Second pressure plate; 12. Second pressure sensor; 13. First geared motor; 14. First lead screw; 15. First sleeve rod; 16. Gear rack; 17. Second sleeve rod; 18. Insert rod; 19. Spur gear rod; 20. Second geared motor; 21. Third geared motor; 22. Second lead screw. Detailed Implementation

[0020] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 4 The embodiments are described in detail below.

[0021] This embodiment provides a strength testing device for a four-legged gantry intelligent lining trolley, as shown in the attached diagram. Figure 1-4 As shown, the device includes a base plate 1 and a top support 2. The base plate 1 can be anchored to the ground through an external connection structure to ensure a firm anchor and prevent the device from being lifted up when the first and second pressurizing mechanisms apply pressure, thus ensuring that the first and second pressurizing mechanisms can normally apply force to the top of the lining trolley. A transverse sliding seat 3 is fixedly connected to the upper surface of the base plate 1, and a first drive assembly is provided inside the transverse sliding seat 3. A transverse slider 4 is slidably connected to the outside of the transverse sliding seat 3, and the transverse slider 4 is connected to the first drive assembly. The first drive assembly includes a first reduction motor 13 and a first lead screw 14. The first lead screw 14 is connected to the output end of the first reduction motor 13 through a spline and is rotatably connected inside the transverse sliding seat 3. The transverse slider 4 is slidably connected to the outside of the transverse sliding seat 3 and is connected to the outside of the first lead screw 14 through a threaded drive. The first reduction motor 13 drives the first lead screw 14 to rotate, which can drive the transverse slider 4 to move laterally back and forth, thereby adjusting the overall horizontal position of the top support 2.

[0022] The upper surface of the horizontal slider 4 is provided with an adjustable lifting mechanism, and the top support 2 is fixedly connected to the top of the lifting mechanism. The lower surface of the top support 2 has lifting mechanisms, a horizontal sliding seat 3, and a base plate 1 on both sides, arranged symmetrically about the vertical center line of the top support 2. The lifting mechanism includes a first sleeve rod 15, a gear rod 16, a second sleeve rod 17, a insertion rod 18, a spur gear rod 19, and a second reduction motor 20. The first sleeve rod 15 has a second sleeve rod 17 on both sides, and both the first sleeve rod 15 and the second sleeve rod 17 are vertically fixedly connected to the upper surface of the horizontal slider 4. The gear rod 16 and the insertion rod 18 are vertically inserted into the interiors of the first sleeve rod 15 and the second sleeve rod 17, respectively. The upper surface of the horizontal slider 4 is fixedly connected to the first... A spur gear rod 19 is rotatably connected to the top of the sides of the sleeve rod 15 and the two first sleeve rods 15. The spur gear rod 19 is connected to the output end of the second gear motor 20 via a spline and is also connected to the two gear rods 16. The second gear motor 20 is fixedly installed on the top of the side of one of the first sleeve rods 15. The top bracket 2 is fixedly connected to the top of the gear rod 16 and the insert rod 18. The second gear motor 20 drives the spur gear rod 19 to rotate, which can drive the gear rod 16 connected to it to move up and down. The two second gear motors 20 on both sides operate synchronously, which can drive the top bracket 2 to rise and fall, so as to facilitate the adjustment of the height of the first pressurizing mechanism and the second pressurizing mechanism. It is suitable for strength testing of lining trolleys of different heights, and can also test the strength of the same lining trolley at different heights.

[0023] The top support 2 is equipped with a second drive assembly, and a translation slider 5 that can be driven by the second drive assembly is slidably connected to the top support 2. The second drive assembly includes a third reduction motor 21 and a second lead screw 22. The second lead screw 22 is horizontally rotatably connected to the middle of the top support 2 and connected to the output end of the third reduction motor 21 via a spline. The third reduction motor 21 is fixedly installed on the side of the top support 2. Guide rods are fixedly connected to both sides inside the top support 2, and the translation slider 5 is slidably connected to the outside of the two guide rods and connected to the outside of the second lead screw 22 via a threaded drive. When the third reduction motor 21 drives the second lead screw 22 to rotate, it can drive the translation slider 5 outside it to move horizontally back and forth along the direction of the guide rods, thereby facilitating the adjustment of the horizontal position of the first pressurizing mechanism and the second pressurizing mechanism. The movement direction of the translation slider 5 is perpendicular to the movement direction of the transverse slider 4. The two cooperate with each other to arbitrarily adjust the first pressurizing mechanism and the second pressurizing mechanism in the horizontal direction, which is convenient for corresponding to different parts of the top of the lining trolley.

[0024] A fixed plate 6 is fixedly connected to the lower surface of the translation slider 5. A first pressurizing mechanism that can apply vertical force to the lining trolley is set at the center of the lower surface of the fixed plate 6. The first pressurizing mechanism includes a first cylinder 7, a first pressurizing plate 8, and a first pressure sensor 9. The fixed cylinder body of the first cylinder 7 is vertically fixedly connected to the center of the lower surface of the fixed plate 6, and the first pressurizing plate 8 is fixedly connected to the bottom end of the movable rod of the first cylinder 7. There are four first pressure sensors 9, and the four first pressure sensors 9 are fixedly installed on the upper surface of the first pressurizing plate 8 in a ring array. The four first pressure sensors 9 can detect the pressure at the bottom of the first pressurizing plate 8, so as to know the pressure applied by the first pressurizing plate 8 to the lining trolley. The first cylinder 7 pushes the first pressurizing plate 8 vertically downward to apply a vertical force to the top of the lining trolley. The strength of the vertical force can be adjusted according to the ultimate strength of the lining trolley and maintained for a certain period of time, thereby simulating the concrete pouring load on the top of the lining trolley, and is used to detect the strength of each connection part and the whole of the lining trolley.

[0025] A second pressurizing mechanism is provided around the lower surface of the fixed plate 6 to apply an oblique force to the lining trolley. The second pressurizing mechanism includes a second cylinder 10, a second pressurizing plate 11, and a second pressure sensor 12. The top of the fixed cylinder body of the second cylinder 10 is hinged to the lower surface of the fixed plate 6 via a ball joint, and the bottom end of the movable rod body is hinged to the upper surface of the second pressurizing plate 11 via a ball joint. The second cylinder 10 is tilted, and its bottom end is tilted towards the axis of the first pressurizing mechanism. There are four second cylinders 10, and the four second cylinders 10 are arranged in a circular array between the fixed plate 6 and the second pressurizing plate 11. The bottom ends of the four second cylinders 10 are all close to the first cylinder 7, and the tilt angle is 15°. The four second cylinders 10 are independently controlled. When a certain second cylinder 10 applies a force to the second cylinder 7, the pressure sensor 12 is applied to the first cylinder 7. When the pressure plate 11 applies pressure, it applies a vertical force to the top of the lining trolley and also generates a lateral force, thereby simulating the lateral pressure of concrete on the lining trolley. This makes the testing method more consistent with actual use and allows for more accurate detection of the strength of various parts of the lining trolley. The four second cylinders 10 work together to apply lateral forces to the lining trolley from all directions, further improving the accuracy of the lining trolley testing. There are four second pressure sensors 12, which are fixedly installed on the upper surface of the second pressure plate 11 in a ring array. The second pressure sensors 12 can detect the pressure intensity at corresponding locations on the lower surface of the second pressure plate 11, thereby precisely controlling the pressure of each second cylinder 10 and facilitating precise pressure adjustment.

[0026] The detection ends of the first pressure sensor 9 and the second pressure sensor 12 are respectively inserted through the lower surfaces of the first pressure plate 8 and the second pressure plate 11. The second pressure plate 11 is sleeved on the outside of the first pressure plate 8 and the lower surfaces of both are on the same horizontal plane. The first pressure plate 8 and the second pressure plate 11 both abut against the top of the lining trolley, which can simultaneously apply vertical and lateral forces to the lining trolley to simulate actual working conditions.

[0027] The first cylinder 7 and the second cylinder 10 are both connected to the external high-pressure air circuit through pipes. The first pressure sensor 9, the second pressure sensor 12, the first geared motor 13, the second geared motor 20 and the third geared motor 21 are all electrically connected to the external control unit and are all electrically connected to the external circuit through wires.

[0028] In summary, the strength testing device for the intelligent lining trolley with four legs is used in the following steps:

[0029] 1. Adjust the lifting mechanism according to the height of the lining trolley to make the bottom of the first pressurizing mechanism and the second pressurizing mechanism higher than the lining trolley, and then move the lining trolley to below the top support 2.

[0030] 2. The first and second pressure mechanisms are moved to the part to be tested by the first and second drive components, and the first and second pressure mechanisms are lowered again by the lifting and adjusting mechanism to abut against the top of the lining trolley.

[0031] 3. Then, the first pressurizing mechanism applies a vertical force to the top of the lining trolley and the second pressurizing mechanism applies a lateral force to the lining trolley. The pressurizing forces of the first and second pressurizing mechanisms are adjusted, and the lateral forces applied by the second pressurizing mechanism to the lining trolley in different directions are adjusted, thereby testing the strength of the lining trolley.

[0032] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A strength testing device for a four-legged gantry intelligent lining trolley, comprising a base plate (1) and a top support (2), characterized in that: The upper surface of the base plate (1) is fixedly connected to a transverse sliding seat (3), and the interior of the transverse sliding seat (3) is provided with a first driving component. The exterior of the transverse sliding seat (3) is slidably connected to a transverse slider (4), and the transverse slider (4) is connected to the first driving component in a transmission manner. The upper surface of the transverse slider (4) is provided with a height-adjustable lifting adjustment mechanism, and the top bracket (2) is fixedly connected to the top of the lifting adjustment mechanism. The interior of the top bracket (2) is provided with a second driving component, and the interior of the top bracket (2) is slidably connected to a translation slider (5) that can be connected to the second driving component in a transmission manner. The lower surface of the translation slider (5) is fixedly connected to a fixed plate (6). The center of the lower surface of the fixed plate (6) is provided with a first pressing mechanism that can apply vertical force to the lining trolley. The periphery of the lower surface of the fixed plate (6) is provided with a second pressing mechanism that can apply oblique force to the lining trolley.

2. The strength testing device for a four-legged gantry intelligent lining trolley according to claim 1, characterized in that: The top support (2) has a lifting adjustment mechanism, a horizontal sliding seat (3) and a base plate (1) on both sides of its lower surface, and they are symmetrically arranged with the vertical center line of the top support (2) as the axis of symmetry.

3. The strength testing device for a four-legged gantry intelligent lining trolley according to claim 1, characterized in that: The first pressurization mechanism includes a first cylinder (7), a first pressurization plate (8), and a first pressure sensor (9). The fixed cylinder body of the first cylinder (7) is vertically fixedly connected to the center of the lower surface of the fixed plate (6), and the first pressurization plate (8) is fixedly connected to the bottom end of the movable rod of the first cylinder (7). There are four first pressure sensors (9), and the four first pressure sensors (9) are fixedly installed on the upper surface of the first pressurization plate (8) in a ring array.

4. The strength testing device for a four-legged gantry intelligent lining trolley according to claim 3, characterized in that: The second pressurizing mechanism includes a second cylinder (10), a second pressurizing plate (11), and a second pressure sensor (12). The top end of the fixed cylinder body of the second cylinder (10) is hinged to the lower surface of the fixed plate (6) by a ball joint, and the bottom end of the movable rod body is hinged to the upper surface of the second pressurizing plate (11) by a ball joint. The second cylinder (10) is in an inclined state and the bottom end is inclined toward the axis of the first pressurizing mechanism. There are four second cylinders (10), and the four second cylinders (10) are arranged in a ring array between the fixed plate (6) and the second pressurizing plate (11). There are four second pressure sensors (12), and the four second pressure sensors (12) are fixedly installed on the upper surface of the second pressurizing plate (11) in a ring array.

5. The strength testing device for a four-legged gantry intelligent lining trolley according to claim 4, characterized in that: The detection ends of the first pressure sensor (9) and the second pressure sensor (12) are respectively inserted through the lower surfaces of the first pressure plate (8) and the second pressure plate (11). The second pressure plate (11) is sleeved on the outside of the first pressure plate (8) and the lower surfaces of the two are at the same level.

6. The strength testing device for a four-legged gantry intelligent lining trolley according to claim 1, characterized in that: The first drive assembly includes a first geared motor (13) and a first lead screw (14). The first lead screw (14) is connected to the output end of the first geared motor (13) by a spline and is rotatably connected inside the transverse sliding seat (3). The transverse slider (4) is slidably connected to the outside of the transverse sliding seat (3) and is connected to the outside of the first lead screw (14) by a threaded drive.

7. The strength testing device for a four-legged gantry intelligent lining trolley according to claim 1, characterized in that: The lifting and adjusting mechanism includes a first sleeve rod (15), a gear rod (16), a second sleeve rod (17), a plug rod (18), a spur gear rod (19), and a second reduction motor (20). The first sleeve rod (15) has a second sleeve rod (17) on both sides, and both the first sleeve rod (15) and the second sleeve rod (17) are vertically fixed to the upper surface of the horizontal slider (4). The gear rod (16) and the plug rod (18) are vertically inserted into the interiors of the first sleeve rod (15) and the second sleeve rod (17), respectively. Both sides of the upper surface of the horizontal slider (4) are fixedly connected to the first sleeve rod (15), and the top of the two first sleeve rods (15) are rotatably connected to the spur gear rod (19). The spur gear rod (19) is connected to the output end of the second gear motor (20) through a spline and is connected to both gear rods (16). The second gear motor (20) is fixedly installed on the top of one of the first sleeve rods (15). The top bracket (2) is fixedly connected to the top of the gear rod (16) and the insert rod (18).

8. The strength testing device for a four-legged gantry intelligent lining trolley according to claim 1, characterized in that: The second drive assembly includes a third geared motor (21) and a second lead screw (22). The second lead screw (22) is horizontally rotatably connected to the middle of the top bracket (2) and connected to the output end of the third geared motor (21) via a spline. The third geared motor (21) is fixedly installed on the side of the top bracket (2). Guide rods are fixedly connected to both sides inside the top bracket (2), and the translation slider (5) is slidably connected to the outside of the two guide rods and connected to the outside of the second lead screw (22) via a threaded drive.

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