Quality detection device for highway acceptance

Abstract

The invention discloses a quality detection device for highway acceptance, and relates to the technical field of strength testing. The problem of energy recovery is solved. The device specifically comprises a shell, a bearing table is welded to the inner wall of the shell, a collision block is slidably connected to the interior of the shell, and a plurality of tip rods are fixed to the outer wall of the bottom of the shell; a piezoelectric chip is fixedly connected to the inner wall of the bearing table in an embedded mode, the collision block is in collision fit with the piezoelectric chip, and an energy storage mechanism is arranged on the side wall of the shell. The piezoelectric chip and the battery cells are arranged, the piezoelectric effect of the battery cells is utilized, electric energy can be generated and stored in the process of transmitting pressure through impact, and therefore part of impact energy is recycled, and through the arrangement of the second connecting nose and the elastic electrode plates and the series connection of the battery cells, the charging efficiency is improved. Therefore, the positions of the elastic electrode plates can be adjusted according to the magnitude of voltage generated by impact, so that the number of battery cells integrally connected into a circuit is adjusted, it is guaranteed that the charging voltage of each battery cell does not exceed the limit, and the use safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of strength testing, and in particular to a quality testing device for highway acceptance. Background Art

[0002] When a highway is inspected and accepted, it is necessary to conduct a quality inspection on the highway. One of the items of the inspection is to test the strength. The strength test is to use a pointed rod to hit the road surface, and then apply a certain amount of impact and static pressure load to determine whether the highway is damaged and judge the strength based on the degree of damage.

[0003] After searching, the Chinese patent publication number CN212180504U discloses a road strength detection device, including an outer frame, a lower rod body, a detection plate, a detection rod body, a lower impact block, an upper impact block, a guide rod, a support plate, a handle, a counterweight plate, a screw and a locking nut; the lower rod body is installed at the bottom of the outer frame, the detection plate is installed at the bottom of the lower rod body, and several detection rod bodies are fixedly installed at the bottom of the detection plate, the lower impact block is installed at the inner lower end of the outer frame, the upper impact block is arranged on the upper side of the lower impact block, the lower impact block corresponds to the upper impact block, and the upper end of the upper impact block is connected to the guide rod.

[0004] The above patent has the following shortcomings: it uses impact to apply a downward load force, but it cannot recover the impact energy. When multiple measurements are performed, it will cause high manual labor intensity and high energy consumption.

[0005] To this end, the present invention provides a quality detection device for highway acceptance. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a quality inspection device for highway acceptance.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A quality inspection device for highway acceptance, comprising a housing,

[0009] A load-bearing platform is welded on the inner wall of the shell, a collision block is slidably connected inside the shell, and a plurality of pointed rods are fixed on the bottom outer wall of the shell;

[0010] The inner wall of the load-bearing platform is fixedly embedded with a piezoelectric chip, the collision block and the piezoelectric chip are collided and matched, and the side wall of the shell is provided with an energy storage mechanism;

[0011] The energy storage mechanism is composed of a plurality of battery cells, and the charging terminals of the plurality of battery cells are connected in series to form a circuit through a connecting nose 1, and a connecting nose 2 is fixed to the negative charging terminal of each battery cell, and a positive charging terminal of the battery cell located at the endmost end is connected to the positive output terminal of the piezoelectric chip, and an outer wall of the connecting nose 2 is non-contactingly matched with an elastic electrode sheet, and the elastic electrode sheet is connected to the negative output terminal of the piezoelectric chip.

[0012] Preferably: the energy storage mechanism also includes a switching rod, the elastic electrode sheet is fixed to the side wall of the switching rod, and the switching rod is slidably connected to the inner wall of the shell through a guide rod, the top of the switching rod is buckled with a spring 2, the other end of the spring 2 is buckled with the inner wall of the shell, the bottom outer wall of the switching rod is fixed with a permanent magnet, and the shell is fixed with an electromagnet 2 at the permanent magnet.

[0013] Furthermore: the second electromagnet has the same magnetic pole as the opposite side of the permanent magnet, and the second electromagnet is connected to the charging circuit of the battery core.

[0014] On the basis of the above scheme: the outer wall of the switching rod is provided with a plurality of slots, the inner wall of the shell is fixed with a fixing block, the side wall of the fixing block is elastically slidably connected with an arc head clamping rod through a spring, and the arc head clamping rod cooperates with the slots.

[0015] A better solution in the above solution is that the spacing between the card slots is the same as the spacing between the connecting noses.

[0016] As a further solution of the present invention: the side wall of the shell is provided with a pneumatic drive mechanism, and the pneumatic drive mechanism includes an air intake channel opened on the side wall of the load-bearing platform and an air storage tank connected to the air intake channel and fixed to the side wall of the shell, a compressor is fixed to the air intake end of the air storage tank, and a pressure relief valve and a solenoid valve are respectively provided at the connection between the compressor and the air intake channel.

[0017] At the same time, a lifting plate is movably provided on the inner wall of the shell, an electromagnet 1 is magnetically connected to the collision block at the bottom of the lifting plate, a spring 1 is buckled on the top of the lifting plate, the top of the spring 1 is buckled on the top inner wall of the shell, and a winch lifting mechanism is provided on the top of the shell.

[0018] As a preferred embodiment of the present invention: the winch lifting mechanism includes a support plate, a motor and a drum, the support plate is fixed to the top outer wall of the shell by bolts, the motor is fixed to the side wall of the support plate by bolts, and the drum is fixed to the outer wall of the output shaft of the motor.

[0019] At the same time, a twisted rope is wound around the outer wall of the drum, and the movable end of the twisted rope is fixed to the top outer wall of the lifting plate.

[0020] As a better solution of the present invention: a planetary frame is fixedly connected to the other side of the drum, and a plurality of planetary gears are rotatably connected to the side wall of the planetary frame. The outer side of the planetary gear is meshed with an outer gear ring fixed to the outer wall of the top of the shell, and the inner side of the planetary gear is meshed with the same sun gear, and the side wall of the sun gear is connected to a fiber optic gyroscope.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention, by arranging piezoelectric chips and battery cells and utilizing the piezoelectric effect of the battery cells, can generate and store electrical energy in the process of transmitting pressure during impact, thereby realizing partial impact energy recovery, and by arranging a connecting nose 2, an elastic electrode sheet, and charging the battery cells in series, the position of the elastic electrode sheet can be adjusted according to the voltage generated by the impact, thereby adjusting the number of battery cells connected to the overall circuit, ensuring that the charging voltage of each battery cell will not exceed the limit, thereby increasing safety in use.

[0023] 2. The present invention drives the position of the elastic electrode sheet by utilizing the electromagnetic drive method of the second electromagnet and the permanent magnet, and then establishes a correlation between the second electromagnet and the circuit of the battery cell, so that the number of connected battery cells can be automatically controlled by the voltage generated by the piezoelectric chip, thereby simplifying the control logic.

[0024] 3. The present invention, by providing a pneumatic driving mechanism or a winch lifting mechanism, drives the impact block to rise by means of pneumatic pressure or winch respectively, thereby eliminating the need for manual lifting, thereby solving the problem of high manual labor intensity and increasing the control accuracy of the impact force.

[0025] 4. The present invention, by setting a fiber optic gyroscope, can detect the lifting height by detecting the angle change, so as to control the impact force, and at the same time accelerate by setting the sun gear, outer ring gear and planetary gear, thereby increasing the control accuracy of the collision block position. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a quality inspection device for highway acceptance proposed by the present invention;

[0027] Figure 2 A schematic diagram of the structure of a piezoelectric chip of a quality inspection device for highway acceptance proposed by the present invention;

[0028] Figure 3 A schematic diagram of the cell connection structure of a quality inspection device for highway acceptance proposed by the present invention;

[0029] Figure 4 A schematic diagram of the internal structure of a housing of a quality inspection device for highway acceptance proposed by the present invention;

[0030] Figure 5A quality inspection device for highway acceptance proposed by the present invention Figure 4 The enlarged structural diagram of part A in the middle;

[0031] Figure 6 A schematic cross-sectional view of the pneumatic drive mechanism of a quality inspection device for highway acceptance proposed by the present invention;

[0032] Figure 7 The present invention provides a schematic structural diagram of a winch lifting mechanism of a quality inspection device for highway acceptance.

[0033] In the figure: 1. shell; 2. tip rod; 3. load-bearing platform; 4. collision block; 5. electromagnet 1; 6. pneumatic drive mechanism; 7. lifting plate; 8. spring 1; 9. winch lifting mechanism; 10. energy storage mechanism; 11. piezoelectric chip; 12. shell; 13. battery core; 14. connecting nose 1; 15. connecting nose 2; 16. elastic electrode sheet; 17. switching rod; 18. guide rod; 19. spring 2; 20. slot; 21. electromagnet 2; 22. permanent magnet; 23. fixing block; 24. arc head clamping rod; 25. spring 3; 26. air intake channel; 27. pressure relief valve; 28. solenoid valve; 29. ​​gas storage tank; 30. compressor; 31. fiber optic gyroscope; 32. sun gear; 33. planetary frame; 34. support plate; 35. motor; 36. drum; 37. rope; 38. outer gear ring; 39. planetary gear. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] Embodiment 1:

[0037] A quality inspection device for highway acceptance, such as Figure 1-Figure 7 As shown, it comprises a shell 1, a bearing platform 3 is welded to the inner wall of the shell 1, a collision block 4 is slidably connected to the inside of the shell 1, and a plurality of pointed rods 2 are fixed to the bottom outer wall of the shell 1;

[0038] A piezoelectric chip 11 is fixedly embedded in the inner wall of the load-bearing platform 3 , the collision block 4 and the piezoelectric chip 11 are collided and matched, and an energy storage mechanism 10 is arranged on the side wall of the housing 1 .

[0039] The energy storage mechanism 10 is composed of a plurality of battery cells 13, and the charging terminals of the plurality of battery cells 13 are connected in series to form a circuit through a connecting nose 14, and a connecting nose 2 15 is fixed to the negative charging terminal of each battery cell 13, and a positive charging terminal of the battery cell 13 located at the end is connected to the positive output terminal of the piezoelectric chip 11, and the outer wall of the connecting nose 2 15 is not in contact with an elastic electrode sheet 16, and the elastic electrode sheet 16 is connected to the negative output terminal of the piezoelectric chip 11.

[0040] When the device is in use, the impact block 4 can be moved upward, and then the impact block 4 is allowed to fall freely, and then the impact block 4 hits the piezoelectric chip 11, and then the impact force is transmitted to the load-bearing platform 3, thereby applying a downward load force to the shell 1 and the pointed rod 2, and then observing whether the road is damaged and the damage situation to judge the strength of the road. While transmitting the impact force, the piezoelectric chip 11 will also generate electrical energy during the pressure transmission process, and then store the electrical energy using the battery cell 13.

[0041] The device, by setting a piezoelectric chip 11 and a battery cell 13, utilizes the piezoelectric effect of the battery cell 13, can generate electrical energy for storage during the process of transmitting pressure during impact, thereby realizing partial impact energy recovery, and by setting a connecting nose 2 15, an elastic electrode sheet 16 and charging the battery cells 13 in series, the position of the elastic electrode sheet 16 can be adjusted according to the voltage generated by the impact, thereby adjusting the number of battery cells 13 connected to the overall circuit, ensuring that the charging voltage of each battery cell 13 will not exceed the limit, thereby increasing safety in use.

[0042] In order to solve the automation control problem; Figure 4 As shown, the energy storage mechanism 10 also includes a switching rod 17, the elastic electrode sheet 16 is fixed to the side wall of the switching rod 17, and the switching rod 17 is slidably connected to the inner wall of the shell 12 through a guide rod 18, a spring 2 19 is buckled on the top of the switching rod 17, and the other end of the spring 2 19 is buckled on the inner wall of the shell 12, a permanent magnet 22 is fixed to the bottom outer wall of the switching rod 17, and an electromagnet 21 is fixed to the permanent magnet 22 of the shell 12.

[0043] The second electromagnet 21 has the same magnetic pole as the permanent magnet 22 on the opposite side, and the second electromagnet 21 is connected to the charging circuit of the battery core 13 .

[0044] When the impact force is large and the voltage generated by the piezoelectric chip 11 is large, the current and voltage in the electromagnet 21 will increase, and the magnetic field strength of the electromagnet 21 will increase, thereby increasing the magnetic repulsion between the electromagnet 21 and the permanent magnet 22. The switching rod 17 is moved upward by the magnetic repulsion force to overcome the elastic force of the spring 2 19, thereby increasing the number of battery cells 13 involved in charging.

[0045] This device drives the position of the elastic electrode sheet 16 by utilizing the electromagnetic drive method of the second electromagnet 21 and the permanent magnet 22, and then establishes a correlation between the second electromagnet 21 and the circuit of the battery cell 13, so that the number of connected battery cells 13 can be automatically controlled by the voltage generated by the piezoelectric chip 11, thereby simplifying the control logic.

[0046] In order to solve the problem of position accuracy; Figure 5 As shown, the outer wall of the switching lever 17 is provided with a plurality of slots 20 , and the spacing between the slots 20 is the same as the spacing between the connecting noses 14 .

[0047] A fixing block 23 is fixed to the inner wall of the housing 12 , and an arc-head clamping rod 24 is elastically slidably connected to the side wall of the fixing block 23 via a spring 25 , and the arc-head clamping rod 24 cooperates with the clamping slot 20 .

[0048] Since there is a gap between the adjacent connecting noses 15, if the elastic electrode sheet 16 stays between the gaps of the connecting noses 15, the charging circuit cannot be connected. Based on this, the device is provided with an arc head clamping rod 24 and a plurality of clamping slots 20, so that the stop position of the switching rod 17 can be limited by the clamping slots 20 and the arc head clamping rod 24 each time, thereby ensuring that the connecting nose 15 and the elastic electrode sheet 16 can be reliably contacted and matched each time the switching rod 17 stops, thereby ensuring the circuit connection and increasing reliability.

[0049] When this embodiment is in use, the impact block 4 can be moved upward, and then the impact block 4 is allowed to fall freely, and then the impact block 4 hits the piezoelectric chip 11, and then the impact force is transmitted to the load-bearing platform 3, thereby applying a downward load force to the shell 1 and the tip rod 2, and then observing whether the road is damaged and the damage situation to judge the strength of the road. While transmitting the impact force, the piezoelectric chip 11 will also generate electrical energy in the process of pressure transmission, and then the electrical energy is stored in the battery cell 13. When the impact force is large and the voltage generated by the piezoelectric chip 11 is large, the current and voltage in the electromagnet 21 will increase, and the magnetic field strength of the electromagnet 21 will increase, thereby increasing the magnetic repulsion between the electromagnet 21 and the permanent magnet 22, and the switching rod 17 is moved upward by the magnetic repulsion force to overcome the elastic force of the spring 2 19, so that the number of battery cells 13 involved in charging increases.

[0050] Embodiment 2:

[0051] A quality inspection device for highway acceptance, such as Figure 1 , 6 As shown, in order to solve the driving problem, this embodiment makes the following improvements on the basis of embodiment 1: a pneumatic driving mechanism 6 is provided on the side wall of the shell 1.

[0052] The pneumatic drive mechanism 6 includes an air intake channel 26 opened on the side wall of the load-bearing platform 3 and an air storage tank 29 connected to the air intake channel 26 and fixed to the side wall of the shell 1. A compressor 30 is fixed to the air intake end of the air storage tank 29, and a pressure relief valve 27 and a solenoid valve 28 are respectively provided at the connection between the compressor 30 and the air intake channel 26.

[0053] When this embodiment is in use, the compressor 30 can fill air into the air tank 29 to increase the internal pressure of the air tank 29. During testing, the pressure relief valve 27 is closed and the solenoid valve 28 is opened. The air pressure in the air tank 29 instantly enters the inner cavity of the shell 1, causing the impact block 4 to be instantly subjected to an increase in air pressure. Subsequently, the solenoid valve 28 is quickly closed and the pressure relief valve 27 is opened at the same time. The impact block 4 will drop and impact the load-bearing platform 3.

[0054] Embodiment 3:

[0055] A quality inspection device for highway acceptance, such as Figure 1 , 7 As shown, in order to solve the driving problem, this embodiment makes the following improvements on the basis of embodiment 1:

[0056] The inner wall of the shell 1 is movably provided with a lifting plate 7, the bottom of the lifting plate 7 is provided with an electromagnet 5 magnetically connected to the collision block 4, the top of the lifting plate 7 is buckled with a spring 8, the top of the spring 8 is buckled to the top inner wall of the shell 1, and the top of the shell 1 is provided with a winch lifting mechanism 9.

[0057] The winch lifting mechanism 9 includes a support plate 34, a motor 35 and a drum 36. The support plate 34 is fixed to the top outer wall of the shell 1 by bolts, and the motor 35 is fixed to the side wall of the support plate 34 by bolts. The drum 36 is fixed to the outer wall of the output shaft of the motor 35, and a rope 37 is wound on the outer wall of the drum 36. The movable end of the rope 37 is fixed to the top outer wall of the lifting plate 7.

[0058] When the motor 35 is started, it can drive the reel 36 to reel in the twisted rope 37, and at the same time energize the electromagnet 5, which is fixed to the impact block 4 by magnetic attraction, driving the impact block 4 to rise synchronously, and the spring 8 is compressed and pulled to the required height, which corresponds to an impact force, thereby corresponding to a test load force, and then the electromagnet 5 is de-energized. At this time, the impact block 4 is lowered by gravity and the elastic force of the spring 8, and then collides with the impact block 4.

[0059] Since the magnitude of the impact force is related to the rising position of the impact block 4, in order to control the impact force, the rising position of the impact block 4 needs to be controlled, such as Figure 7As shown, the other side of the reel 36 is fixedly connected to a planetary carrier 33, and the side wall of the planetary carrier 33 is rotatably connected to multiple planetary gears 39. The outer side of the planetary gear 39 is meshed with an outer gear ring 38 fixed to the top outer wall of the shell 1, and the inner side of the planetary gear 39 is meshed with the same sun gear 32, and the side wall of the sun gear 32 is connected to the fiber optic gyroscope 31.

[0060] When the reel 36 rotates, it drives the planetary gear 39 to revolve, thereby utilizing the meshing action of the planetary gear 39, the outer gear ring 38 and the sun gear 32 to drive the sun gear 32 to rotate faster, and then utilize the fiber optic gyroscope 31 to sense the rotation angle, and finally determine the lifting height in combination with the winding radius of the reel 36, thereby determining the size of the impact force.

[0061] The device is provided with a pneumatic driving mechanism 6 or a winch lifting mechanism 9, which drives the impact block 4 to rise by pneumatic pressure or winch, thereby eliminating the need for manual lifting, thereby solving the problem of high manual labor intensity and increasing the control accuracy of the impact force.

[0062] At the same time, the device is equipped with a fiber optic gyroscope 31, which can detect the lifting height by detecting the angle change, so as to control the impact force. At the same time, the sun gear 32, the outer ring gear 38, and the planetary gear 39 are set to accelerate, thereby increasing the control accuracy of the position of the impact block 4.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A quality inspection device for highway acceptance, comprising a housing (1), characterized in that: A load-bearing platform (3) is welded to the inner wall of the shell (1), a collision block (4) is slidably connected to the inside of the shell (1), and a plurality of pointed rods (2) are fixed to the bottom outer wall of the shell (1); A piezoelectric chip (11) is fixedly embedded in the inner wall of the load-bearing platform (3), the collision block (4) and the piezoelectric chip (11) are collided and matched, and an energy storage mechanism (10) is arranged on the side wall of the housing (1); The energy storage mechanism (10) is composed of a plurality of battery cells (13), the charging terminals of the plurality of battery cells (13) are connected in series to form a circuit via a connecting nose (14), and a connecting nose (15) is fixed to the negative charging terminal of each battery cell (13), the positive charging terminal of the battery cell (13) located at the endmost end is connected to the positive output terminal of the piezoelectric chip (11), and the outer wall of the connecting nose (15) is non-contactingly matched with an elastic electrode sheet (16), and the elastic electrode sheet (16) is connected to the negative output terminal of the piezoelectric chip (11).

2. A quality inspection device for highway acceptance according to claim 1, characterized in that: The energy storage mechanism (10) further comprises a switching rod (17), the elastic electrode sheet (16) is fixed to the side wall of the switching rod (17), and the switching rod (17) is slidably connected to the inner wall of the housing (12) via a guide rod (18), a second spring (19) is buckled at the top of the switching rod (17), and the other end of the second spring (19) is buckled to the inner wall of the housing (12), a permanent magnet (22) is fixed to the bottom outer wall of the switching rod (17), and a second electromagnet (21) is fixed to the housing (12) at the permanent magnet (22).

3. A quality inspection device for highway acceptance according to claim 2, characterized in that: The second electromagnet (21) has the same magnetic pole as the permanent magnet (22) on the opposite side, and the second electromagnet (21) is connected to the charging circuit of the battery core (13).

4. A quality inspection device for highway acceptance according to claim 3, characterized in that: The outer wall of the switching rod (17) is provided with a plurality of slots (20), the inner wall of the housing (12) is fixed with a fixing block (23), the side wall of the fixing block (23) is elastically slidably connected with an arc-head clamping rod (24) via a spring three (25), and the arc-head clamping rod (24) cooperates with the slots (20).

5. A quality inspection device for highway acceptance according to claim 4, characterized in that: The spacing of the card slots (20) is the same as the spacing of the connecting nose (14).

6. A quality inspection device for highway acceptance according to claim 1, characterized in that: The side wall of the shell (1) is provided with a pneumatic drive mechanism (6), and the pneumatic drive mechanism (6) comprises an air intake passage (26) opened on the side wall of the load-bearing platform (3) and an air storage tank (29) connected to the air intake passage (26) and fixed to the side wall of the shell (1), a compressor (30) is fixed to the air intake end of the air storage tank (29), and a pressure relief valve (27) and a solenoid valve (28) are respectively provided at the connection between the compressor (30) and the air intake passage (26).

7. A quality inspection device for highway acceptance according to claim 1, characterized in that: The inner wall of the shell (1) is movably provided with a lifting plate (7), the bottom of the lifting plate (7) is provided with an electromagnet (5) magnetically connected to the collision block (4), the top of the lifting plate (7) is buckled with a spring (8), the top of the spring (8) is buckled with the top inner wall of the shell (1), and the top of the shell (1) is provided with a winch lifting mechanism (9).

8. A quality inspection device for highway acceptance according to claim 7, characterized in that: The hoisting mechanism (9) comprises a support plate (34), a motor (35) and a drum (36); the support plate (34) is fixed to the top outer wall of the housing (1) by bolts; the motor (35) is fixed to the side wall of the support plate (34) by bolts; and the drum (36) is fixed to the outer wall of the output shaft of the motor (35).

9. A quality inspection device for highway acceptance according to claim 8, characterized in that: A twisted rope (37) is wound around the outer wall of the drum (36), and the movable end of the twisted rope (37) is fixed to the top outer wall of the lifting plate (7).

10. A quality inspection device for highway acceptance according to claim 9, characterized in that: The other side of the winding drum (36) is fixedly connected to a planetary frame (33), and the side wall of the planetary frame (33) is rotatably connected to a plurality of planetary gears (39), the outer side of the planetary gears (39) is meshed with an outer gear ring (38) fixed to the outer wall of the top of the housing (1), and the inner side of the planetary gears (39) is meshed with the same sun gear (32), and the side wall of the sun gear (32) is connected to a fiber optic gyroscope (31).

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