Bridge model bearing capacity tester

Abstract

The invention belongs to the technical field of bridge model testing, and discloses a bridge model bearing capacity tester which comprises a base, a fixed cylinder is fixedly mounted at the top end of the base, and a display screen movably sleeves the surface of the top end of the fixed cylinder. According to the method, the load of the bridge model is gradually increased by manually or electrically controlling the manual pressing assembly and the pressing platform, pressing is stopped until the bearing value reaches the maximum value and begins to be reduced, and finally the load of the bridge model is gradually increased by manually or electrically controlling the manual pressing assembly and the pressing platform, so that the load of the bridge model is gradually increased without using a water adding mode. The bridge model can be tested by adjusting the length of the bridge model, the maximum self-weight load and span of the bridge model can be measured, displayed and recorded efficiently, quickly and conveniently, scores can be automatically generated after measurement is finished, student works can be scientifically and comprehensively evaluated, and the starting position of span measurement can be adjusted according to the length of the bridge model.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge model testing, in particular to a bridge model bearing capacity testing instrument. Background Art

[0002] In science classes in primary and secondary schools, comprehensive practice classes, general technology classes in high schools, and even in relevant courses such as civil engineering in universities, there is often content on designing bridge models. Bridge models designed by students often have tests to test their strength, that is, their load-bearing capacity;

[0003] Traditional bridge load-bearing testing methods mostly use the water-adding measurement method: hang a spring scale at the bottom of the bridge, hang an empty bucket under the spring scale, add water to the empty bucket, and read the spring scale reading. This method has large measurement errors, inaccurate manual readings, and the operator may be injured at the moment the wooden bridge breaks. It is also difficult to accurately measure the maximum load-bearing capacity of the bridge model, and it is easy to wet the ground and surrounding environment. Summary of the invention

[0004] In order to solve the problem in the above background technology that it is difficult to accurately measure the maximum load-bearing capacity of a bridge model, the present invention provides a bridge model load-bearing capacity tester.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge model bearing capacity tester, comprising a base, a fixed cylinder is fixedly installed on the top of the base, a display screen is movably sleeved on the surface of the top of the fixed cylinder, a manual pressing component is slidably sleeved on the surface of the fixed cylinder, a grip rod is fixedly installed on one side of the manual pressing component, a pressing platform is fixedly installed on the bottom end of the manual pressing component, a milling groove is opened on the top of the base, two weighing sensors are arranged on the top of the base, a main control board is arranged inside the base, an ultrasonic sensor is arranged on the side of the weighing sensor close to the surface of the main control board, and a weighing button and a restart button are arranged on the top of the base away from the surface of the fixed cylinder.

[0006] Preferably, a support rod is fixedly installed on the top of the base, a mounting shell is fixedly installed on the top of the support rod, a mounting block is provided at the bottom end of the mounting shell, an electric pressing assembly is fixedly installed at the bottom end of the mounting block, and a pressing button and a stop button are provided at the top of the base.

[0007] Preferably, a bolt 1 located inside the milling groove is provided inside the weighing sensor, and the surface of the bolt 1 is in contact with the inner wall of the milling groove.

[0008] Preferably, bolt 2 is inserted into the interior of the base and the fixed cylinder, and a Yuanbao nut is provided on the surface of the bolt 2.

[0009] Preferably, an insert block located inside the installation shell is fixedly installed on the top of the installation block, and bolt three is inserted between the installation shell and the inside of the insert block.

[0010] Preferably, the pressing platform is square in design, and the pressing platform is fixed to the electric pressing assembly and the manual pressing assembly by magnetic attraction.

[0011] Preferably, the support rod is symmetrically designed, and the support rod and the base are fixed by welding.

[0012] Preferably, the weighing sensor and the ultrasonic sensor are fixed by adhesion.

[0013] Preferably, the number of the milling grooves is four, and each two form a group.

[0014] Preferably, the display screen is sleeved on the surface of the fixed cylinder, and the circuit of the device is arranged inside the fixed cylinder and connected to the display screen.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention pushes the weighing sensor to move so that the bridge model can be placed on the weighing sensor with the largest possible span, and uses the ingot nut to fix the weighing sensor. After the equipment is turned on and various data are stabilized and reset to zero, the weighing button is pressed to obtain the self-weight data and span data of the bridge model. Then, the manual pressing component and the pressing platform can be manually or electrically controlled to gradually increase the load on the bridge model until the load-bearing value reaches a maximum value and begins to decrease, and the pressing is stopped. Finally, the manual pressing component and the pressing platform are manually or electrically controlled to gradually increase the load on the bridge model, so that the bridge model can be tested without adding water. The maximum self-weight and span of the bridge model can be measured, displayed and recorded efficiently, quickly and conveniently. After the measurement is completed, a score will be automatically generated, so that student works can be evaluated scientifically and comprehensively, and the starting position of the span measurement can be adjusted according to the length of the bridge model.

[0017] The present invention provides a Yuanbao nut on the surface of the bolt, thereby facilitating the operator to disassemble the equipment;

[0018] The present invention improves the safety of equipment testing by hiding the circuits used by the equipment inside the base and the fixed cylinder;

[0019] The present invention is equipped with magnetic suction type downward pressure platforms of different specifications so as to increase the load for bridges of different shapes and structures as evenly as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of a cross-sectional base of the present invention;

[0022] Figure 3 This is a schematic diagram showing the bolt of the present invention;

[0023] Figure 4 This is a schematic diagram showing the grip of the present invention;

[0024] Figure 5 This is a schematic diagram of the electric pressing assembly of the present invention;

[0025] Figure 6 It is a schematic diagram of a cross-sectional installation shell of the present invention.

[0026] In the figure: 1. Base; 2. Fixed cylinder; 3. Display screen; 4. Manual pressing assembly; 5. Pressing platform; 6. Grip; 7. Milling groove; 8. Weighing sensor; 9. Ultrasonic sensor; 10. Main control board; 11. Weighing button; 12. Restart button; 13. Support rod; 14. Mounting shell; 15. Mounting block; 16. Electric pressing assembly; 17. Pressing button; 18. Stop button; 19. Bolt one; 20. Bolt two; 21. Insert block; 22. Bolt three. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figures 1 to 4 As shown, the present invention provides a bridge model bearing capacity tester, including a base 1, a fixed cylinder 2 is fixedly installed on the top of the base 1, a display screen 3 is movably sleeved on the surface of the top of the fixed cylinder 2, a manual pressing component 4 is slidably sleeved on the surface of the fixed cylinder 2, a grip rod 6 is fixedly installed on one side of the manual pressing component 4, a pressing platform 5 is fixedly installed on the bottom end of the manual pressing component 4, a milling groove 7 is opened on the top of the base 1, two weighing sensors 8 are arranged on the top of the base 1, a main control board 10 is arranged inside the base 1, an ultrasonic sensor 9 is arranged on the side of the weighing sensor 8 close to the surface of the main control board 10, and a weighing button 11 and a restart button 12 are arranged on the top of the base 1 away from the surface of the fixed cylinder 2.

[0030] The above scheme is adopted: the operator pushes the weighing sensor 8 to move so that the bridge model can be placed on the weighing sensor 8 with the largest possible span, and then the restart button 12 can be pressed to stabilize the data after the equipment is turned on and return to zero, and then the weighing button 11 can be pressed, and then the surface of the grip 6 can be held and force can be applied downward, the grip 6 will push the manual pressing component 4 to move on the surface of the fixed cylinder 2, the manual pressing component 4 will drive the pressing platform 5 to descend, and the surface of the pressing platform 5 will contact the surface of the bridge model, and then the pressing platform 5 will gradually increase the load on the bridge model until the load-bearing value reaches the maximum value, and then the weighing sensor 8 will record the maximum load borne by the bridge model, and then use the ultrasonic sensor 9 to measure the span of the bridge model, and then the recorded data will be transmitted to the inside of the main control board 10, and the main control board 10 will store it and transmit the test data to the surface of the display screen 3.

[0031] like Figure 2 As shown, a bolt 19 located inside the milling groove 7 is provided inside the weighing sensor 8, and the surface of the bolt 19 is in contact with the inner wall of the milling groove 7.

[0032] The above scheme is adopted: through the design of bolt 19, when the weighing sensor 8 moves, the bolt 19 will move inside the milling groove 7. Since the surface of the bolt 19 fits with the inner wall of the milling groove 7, the moving direction of the weighing sensor 8 can be limited. When the weighing sensor 8 needs to be fixed, the ingot can be set on the surface of the bolt 19, and then the bolt 19 and the ingot nut can cooperate to fix the weighing sensor 8.

[0033] like Figure 2 and Figure 3 As shown, a bolt 20 is inserted into the base 1 and the interior of the fixed cylinder 2, and a Yuanbao nut is provided on the surface of the bolt 20.

[0034] The above scheme is adopted: through the design of bolt 20, by inserting bolt 20 into the inside of base 1 and fixed cylinder 2, and then sleeve the ingot nut on the surface of bolt 20, the fixed cylinder 2 can be fixed to the top of base 1, thereby improving the stability of the test.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the pressing platform 5 is square in design, and the pressing platform 5 is fixed to the electric pressing component 16 and the manual pressing component 4 by magnetic attraction.

[0036] The above scheme is adopted: through the design of the pressing platform 5, since the pressing platform 5 is a square design, the force-bearing area can be increased, and the force points are distributed as evenly as possible, and the pressing platform 5 is fixed to the electric pressing component 16 and the manual pressing component 4 by magnetic attraction, so that the operator can replace the pressing platform 5 that is compatible with the shape of the model.

[0037] like Figure 1 As shown, the weighing sensor 8 and the ultrasonic sensor 9 are fixed by adhesion.

[0038] The above scheme is adopted: through the design of the weighing sensor 8 and the ultrasonic sensor 9, since the weighing sensor 8 and the ultrasonic sensor 9 are fixed by adhesion, the close contact between the weighing sensor 8 and the ultrasonic sensor 9 and the bridge model is ensured, thereby more accurately transmitting and measuring the load borne by the bridge model.

[0039] like Figure 1 and Figure 2 As shown, the number of the milled grooves 7 is four, and each two form a group.

[0040] The above solution is adopted: through the design of the milling grooves 7, since every two milling grooves 7 form a group, the stability of the movement of the weighing sensor 8 can be increased.

[0041] like Figure 1 As shown, the display screen 3 is sleeved on the surface of the fixed cylinder 2 , and the circuit of the device is arranged inside the fixed cylinder 2 and connected to the display screen 3 .

[0042] With the above solution, through the design of the display screen 3 , the circuit required by the device can be arranged inside the fixed cylinder 2 and then connected to the display screen 3 , thereby making it convenient for the operator to view the data displayed on the display screen 3 .

[0043] Example 2

[0044] like Figure 5 and Figure 6 As shown, a support rod 13 is fixedly installed on the top of the base 1, a mounting shell 14 is fixedly installed on the top of the support rod 13, a mounting block 15 is provided at the bottom end of the mounting shell 14, an electric pressing assembly 16 is fixedly installed at the bottom end of the mounting block 15, and a pressing button 17 and a stop button 18 are provided at the top of the base 1.

[0045] The above scheme is adopted: through the design of the mounting block 15 and the electric pressing assembly 16, since the pressing platform 5 is arranged on the output shaft of the electric pressing assembly 16, when the bridge model is placed on the weighing sensor 8, the pressing button 17 can be pressed, and then the main control board 10 drives the electric pressing assembly 16, and then the output shaft of the electric pressing assembly 16 will push the pressing platform 5 to move toward the surface of the bridge model, and then the pressing platform 5 will also add load to the bridge model until the load-bearing value reaches the maximum value, and then the weighing sensor 8 will record the maximum load borne by the bridge model, and then use the ultrasonic sensor 9 to measure the span of the bridge model, and then the test data is transmitted to the surface of the display screen 3;

[0046] When it is necessary to stop pressing, the stop button 18 can be pressed, and then the main control board 10 will turn off the electric pressing assembly 16, and the output shaft of the electric pressing assembly 16 will pull the pressing platform 5 to reset.

[0047] like Figure 6 As shown, an insert block 21 located inside the mounting shell 14 is fixedly mounted on the top of the mounting block 15 , and a bolt 22 is inserted between the mounting shell 14 and the inside of the insert block 21 .

[0048] The above scheme is adopted: through the design of the insert block 21 and the bolt three 22, when the mounting block 15 is installed at the bottom end of the mounting shell 14, the insert block 21 can be inserted into the interior of the mounting shell 14, and when the top end of the mounting block 15 contacts the bottom end of the mounting shell 14, the bolt three 22 can be inserted into the interior of the mounting shell 14 and the mounting block 15, and then the ingot nut can be put on the surface of the bolt three 22, and then the mounting block 15 and the electric pressing assembly 16 can be installed at the bottom end of the mounting shell 14.

[0049] like Figure 5 and Figure 6 As shown, the support rod 13 is symmetrically designed, and the support rod 13 and the base 1 are fixed by welding.

[0050] The above solution is adopted: through the design of the support rod 13, since the support rod 13 is symmetrically designed, it can stably support the mounting shell 14, and the support rod 13 and the base 1 are fixed by welding, thereby increasing the stabilization effect.

[0051] The working principle and use process of the present invention:

[0052] First, the operator pushes the weighing sensor 8 to move so that the bridge model can be placed on the weighing sensor 8 with the largest possible span. Then, the operator can hold the surface of the grip 6 and exert force downward. The grip 6 will push the manual pressing component 4 and the pressing platform 5 down. The surface of the pressing platform 5 will contact the surface of the bridge model. Then, the pressing platform 5 will gradually increase the load on the bridge model until the load-bearing value reaches the maximum value. While increasing the load, the weighing button 11 can be pressed. Then, the weighing sensor 8 will record the maximum load borne by the bridge model, and then use the ultrasonic sensor 9 to measure the span of the bridge model. Then, the recorded data will be transmitted to the inside of the main control board 10, and the main control board 10 will store it and transmit the test data to the surface of the display screen 3, so that the operator can view the test data.

[0053] At the same time, you can also press the push button 17, and then the main control board 10 will control the electric push-down assembly 16, so that the output shaft of the electric push-down assembly 16 pushes the push-down platform 5 down and contacts the bridge model, and then the push-down platform 5 at the bottom of the electric push-down assembly 16 will also push the platform 5 to gradually increase the load on the bridge model until the load-bearing value reaches the maximum value, and finally complete the operation process.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge model load-bearing capacity tester, comprising a base (1), characterized in that: A fixed cylinder (2) is fixedly mounted on the top of the base (1); a display screen (3) is movably sleeved on the surface of the top of the fixed cylinder (2); a manual pressing assembly (4) is slidably sleeved on the surface of the fixed cylinder (2); a gripping rod (6) is fixedly mounted on one side of the manual pressing assembly (4); a pressing platform (5) is fixedly mounted on the bottom of the manual pressing assembly (4); a milling groove (7) is provided on the top of the base (1); two weighing sensors (8) are arranged on the top of the base (1); a main control board (10) is arranged inside the base (1); an ultrasonic sensor (9) is arranged on the side of the weighing sensor (8) close to the surface of the main control board (10); and a weighing button (11) and a restart button (12) are arranged on the top of the base (1) away from the surface of the fixed cylinder (2).

2. The bridge model load-bearing capacity tester according to claim 1, characterized in that: A support rod (13) is fixedly mounted on the top of the base (1), a mounting shell (14) is fixedly mounted on the top of the support rod (13), a mounting block (15) is arranged at the bottom of the mounting shell (14), an electric pressing assembly (16) is fixedly mounted at the bottom of the mounting block (15), and a pressing button (17) and a stop button (18) are arranged at the top of the base (1).

3. The bridge model load-bearing capacity tester according to claim 1, characterized in that: The weighing sensor (8) is provided with a bolt (19) located inside the milling groove (7), and the surface of the bolt (19) is in contact with the inner wall of the milling groove (7).

4. The bridge model load-bearing capacity tester according to claim 1, characterized in that: Bolt 2 (20) is inserted into the interior of the base (1) and the fixed cylinder (2), and a Yuanbao nut is arranged on the surface of the bolt 2 (20).

5. The bridge model load-bearing capacity tester according to claim 2, characterized in that: An insert block (21) located inside the installation shell (14) is fixedly mounted on the top of the installation block (15), and bolt three (22) is inserted between the installation shell (14) and the inside of the insert block (21).

6. The bridge model load-bearing capacity tester according to claim 1, characterized in that: The pressing platform (5) is of square design, and the pressing platform (5) is fixed to the electric pressing component (16) and the manual pressing component (4) by means of magnetic attraction.

7. The bridge model load-bearing capacity tester according to claim 2, characterized in that: The support rod (13) is symmetrically designed, and the support rod (13) and the base (1) are fixed by welding.

8. The bridge model load-bearing capacity tester according to claim 1, characterized in that: The weighing sensor (8) and the ultrasonic sensor (9) are fixed by adhesion.

9. The bridge model load-bearing capacity tester according to claim 1, characterized in that: The number of the milling grooves (7) is four, and every two of them form a group.

10. The bridge model load-bearing capacity tester according to claim 1, characterized in that: The display screen (3) is sleeved on the surface of the fixed cylinder (2), and the circuit of the device is arranged inside the fixed cylinder (2) and connected to the display screen (3).

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