Microcomputer-controlled well lid pressure testing machine

Abstract

The invention relates to a microcomputer-controlled manhole cover pressure testing machine. The microcomputer-controlled manhole cover pressure testing machine comprises a mounting bottom plate and a testing assembly, the test assembly is arranged on the top surface of the mounting bottom plate; the test assembly comprises a slide way unit, a test unit and a clamping unit, the slide way unit comprises a rectangular frame and two servo slide rails, the bottom end of the rectangular frame is connected with the top surface of the mounting bottom plate, and the two servo slide rails are arranged on the two opposite inner side walls of the rectangular frame respectively; the two opposite ends of the testing unit are connected with the sliding blocks on the two servo sliding rails respectively, and the testing unit can slide along tracks of the servo sliding rails. The clamping unit is arranged on the top surface of the mounting bottom plate, is located in the slide way unit and is arranged corresponding to the testing unit; according to the well lid stress testing device, the servo sliding rail is arranged, and the servo sliding rail has the high-precision positioning characteristic, so that it is ensured that force application in the testing process is more accurate and controllable, the real stress conditions of the well lid under different pressures can be accurately simulated, and the accuracy of the testing result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of manhole cover pressure testing, in particular to a microcomputer-controlled manhole cover pressure testing machine. Background Art

[0002] At present, the manhole cover pressure tester is a device specially used to test the performance and durability of manhole covers under pressure. It is widely used in municipal engineering, road construction, building materials testing and other fields. It is of great significance to ensure the quality and safety of manhole covers. It can simulate the pressure load that manhole covers may bear in the actual use environment, so as to evaluate the bearing capacity, deformation, rupture strength and other performance indicators of manhole covers.

[0003] However, the traditional microcomputer-controlled manhole cover pressure testing machine lacks an adaptive clamping system, which may cause the manhole cover to shift or tilt during the test, further affecting the accuracy of the test data. Traditional devices may require manual adjustment of the fixture to adapt to manhole covers of different sizes, which not only increases the complexity of the operation, but also prolongs the test preparation time. During the manual adjustment of the fixture or operation, improper operation or unreasonable fixture design may increase the risk of injury to the operator. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a microcomputer-controlled manhole cover pressure testing machine, which has the advantage of being able to improve the accuracy of test data; at the same time, being able to ensure the safety of testers.

[0005] The above-mentioned inventive object of the present invention is achieved through the following technical solutions: a microcomputer-controlled manhole cover pressure testing machine, comprising an installation base plate and a test assembly; the test assembly is arranged on the top surface of the installation base plate; the test assembly comprises a slide unit, a test unit and a clamping unit, the slide unit comprises a rectangular frame and two servo slide rails, the bottom end of the rectangular frame is connected to the top surface of the installation base plate, the two servo slide rails are respectively arranged on the two opposite inner side walls of the rectangular frame, the opposite ends of the test unit are respectively connected to the sliders on the two servo slide rails, and the test unit can slide along the track of the servo slide rails; the clamping unit is arranged on the top surface of the installation base plate, the clamping unit is located in the slide unit, and is arranged corresponding to the test unit; the clamping unit is used to fix the manhole cover to be tested; the test unit is used to perform a pressure test on the manhole cover to be tested.

[0006] Preferably, the microcomputer-controlled manhole cover pressure testing machine provided by the present invention, the clamping unit includes a clamping plate, a plurality of clamping arms and a rotating unit, the bottom surface of the clamping plate is connected to the top surface of the mounting base plate through a mounting block, the plurality of clamping arms are slidably connected to the clamping plate, the plurality of clamping arms are arranged at circumferential intervals along the clamping plate, the rotating unit is arranged on the clamping plate, one end of each of the clamping arms can be slidably inserted on the rotating unit, the rotating unit is used to drive the plurality of clamping arms to slide; the manhole cover to be tested is used to be placed on the top surface of the rotating unit, and the plurality of clamping arms are driven to slide inward by the rotating unit to clamp and fix the manhole cover to be tested.

[0007] Preferably, in the microcomputer-controlled manhole cover pressure testing machine provided by the present invention, a plurality of slide grooves are provided on the clamping plate, the slide grooves all extend along the radial direction of the clamping plate, the plurality of slide grooves are arranged in a radial shape, and the slide grooves are arranged one-to-one with the clamping arms.

[0008] Preferably, in the microcomputer-controlled manhole cover pressure testing machine provided by the present invention, the clamping arm includes an arc-shaped clamping portion, a sliding rod and a limiting rod, the first end of the sliding rod is connected to the inner wall near the bottom end of the arc-shaped clamping portion, the limiting rod is arranged on the top surface near the second end of the sliding rod, the sliding rod is adapted to the sliding groove, the sliding rod is inserted in the sliding groove, and the sliding rod can slide along the sliding groove.

[0009] Preferably, in the microcomputer-controlled manhole cover pressure testing machine provided by the present invention, the rotating unit includes a motor, a driving gear and a driven gear, the motor is fixed to the bottom surface of the clamping plate, the output shaft of the motor passes through the clamping plate and is inserted on the driving gear, the driving gear can rotate relative to the clamping plate, the output shaft of the motor can drive the driving gear to rotate, the driven gear is rotatably connected to the clamping plate through a rotating shaft, the driven gear is meshed with the driving gear, and the rotation of the driving gear can drive the driven gear to rotate; a plurality of arc grooves are provided on the driven gear, the plurality of arc grooves are arranged at intervals along the circumference of the driven gear, the arc grooves and the slide grooves are arranged one by one, the end of the limit rod away from the slide rod is inserted in the arc groove, and the limit rod can slide along the arc groove; the output shaft of the motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and when the driven gear rotates, the limit rod moves through the arc groove, and when the limit rod moves, the slide rod slides along the slide groove.

[0010] Preferably, in the microcomputer-controlled manhole cover pressure testing machine provided by the present invention, the rotating unit also includes a partition, which is arranged at the top end of the rotating shaft, and a gap is left between the partition and the driven gear, and the manhole cover to be tested is used to be placed on the top surface of the partition.

[0011] Preferably, in the microcomputer-controlled manhole cover pressure testing machine provided by the present invention, an anti-skid ring is provided on the partition plate for preventing the manhole cover to be tested from sliding.

[0012] Preferably, in the microcomputer-controlled manhole cover pressure testing machine provided by the present invention, the testing unit includes a connecting plate, a pressure sensor and a pressure plate, the opposite ends of the connecting plate are respectively connected to the sliders on the two servo slide rails, the connecting plate can slide along the track of the servo slide rails, the pressure sensor is arranged at the bottom end of the connecting plate, and the pressure plate is arranged at the end of the pressure sensor away from the connecting plate.

[0013] Preferably, in the microcomputer-controlled manhole cover pressure testing machine provided by the present invention, a plurality of friction balls are arranged on the side of the pressure plate facing away from the pressure sensor, and each two adjacent friction balls are arranged at intervals.

[0014] Preferably, in the microcomputer-controlled manhole cover pressure testing machine provided by the present invention, the friction ball is made of rubber.

[0015] In summary, the beneficial technical effects of the present invention are as follows: the microcomputer-controlled manhole cover pressure testing machine provided by the present application includes a mounting base plate and a test assembly; the test assembly is arranged on the top surface of the mounting base plate; the test assembly includes a slide unit, a test unit and a clamping unit, the slide unit includes a rectangular frame and two servo slide rails, the bottom end of the rectangular frame is connected to the top surface of the mounting base plate, the two servo slide rails are respectively arranged on the two opposite inner side walls of the rectangular frame, the opposite ends of the test unit are respectively connected to the sliders on the two servo slide rails, and the test unit can slide along the track of the servo slide rails; the clamping unit Arranged on the top surface of the mounting base plate, the clamping unit is located inside the slide unit and is arranged corresponding to the test unit; the clamping unit is used to fix the manhole cover to be tested; the test unit is used to perform pressure test on the manhole cover to be tested; on the one hand, by setting the servo slide rail, the servo slide rail has a high-precision positioning characteristic, thereby ensuring that the force applied during the test is more accurate and controllable, which helps to accurately simulate the actual stress conditions of the manhole cover under different pressures, thereby improving the accuracy of the test results; on the other hand, by setting the clamping unit, compared with the manual adjustment of the fixture in the traditional method, the safety of the tester is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the microcomputer-controlled manhole cover pressure testing machine provided by the embodiment of the present invention is shown in FIG. Figure 1 .

[0017] Figure 2 The overall structure of the microcomputer-controlled manhole cover pressure testing machine provided by the embodiment of the present invention is shown in FIG. Figure 2 .

[0018] Figure 3 The structure of the clamping unit in the microcomputer-controlled manhole cover pressure testing machine provided by the embodiment of the present invention is shown in FIG. Figure 1 .

[0019] Figure 4 The structure of the clamping unit in the microcomputer-controlled manhole cover pressure testing machine provided by the embodiment of the present invention is shown in FIG. Figure 2 .

[0020] Figure 5 The structure of the clamping unit in the microcomputer-controlled manhole cover pressure testing machine provided by the embodiment of the present invention is shown in FIG. Figure 3 .

[0021] Figure 6 It is a structural schematic diagram of a clamping plate in a microcomputer-controlled manhole cover pressure testing machine provided in an embodiment of the present invention.

[0022] Figure 7 It is a structural schematic diagram of a clamping arm in a microcomputer-controlled manhole cover pressure testing machine provided in an embodiment of the present invention.

[0023] In the figure, 1, microcomputer controlled manhole cover pressure testing machine; 10, mounting base plate; 11, universal wheel; 12, placement plate; 121, through hole; 20, test assembly; 21, slideway unit; 211, rectangular frame; 212, servo slide rail; 22, test unit; 221, connecting plate; 222, pressure sensor; 223, pressure plate; 2231, friction ball; 23, clamping unit; 231, clamping plate; 2311, slide Groove; 2312, stop plate; 232, clamping arm; 2321, arc-shaped clamping portion; 2322, slide bar; 2323, limit rod; 2324, limit plate; 2325, clamping strip; 233, rotating unit; 2331, motor; 2332, driving gear; 2333, driven gear; 2334, rotating shaft; 2335, arc-shaped groove; 2336, partition; 2337, anti-slip ring; 234, mounting block. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0025] Reference Figure 1 and Figure 2, is a microcomputer-controlled manhole cover pressure testing machine 1 disclosed in the present invention, comprising a mounting base plate 10 and a test assembly 20; the test assembly 20 is arranged on the top surface of the mounting base plate 10; the test assembly 20 comprises a slide unit 21, a test unit 22 and a clamping unit 23, the slide unit 21 comprises a rectangular frame 211 and two servo slide rails 212, the bottom end of the rectangular frame 211 is connected to the top surface of the mounting base plate 10, the two servo slide rails 212 are respectively arranged on the two opposite inner side walls of the rectangular frame 211, the opposite ends of the test unit 22 are respectively connected to the sliders on the two servo slide rails 212, and the test unit 22 can slide along the track of the servo slide rail 212 ; The clamping unit 23 is arranged on the top surface of the mounting base plate 10, the clamping unit 23 is located in the slide unit 21 and is arranged corresponding to the test unit 22; the clamping unit 23 is used to fix the manhole cover to be tested; the test unit 22 is used to perform a pressure test on the manhole cover to be tested; on the one hand, by setting the servo slide rail 212, the servo slide rail 212 has a high-precision positioning characteristic, thereby ensuring that the force applied during the test is more accurate and controllable, which helps to accurately simulate the actual force conditions of the manhole cover under different pressures, thereby improving the accuracy of the test results; on the other hand, by setting the clamping unit 23, compared with the manual adjustment of the fixture in the traditional method, the safety of the tester is guaranteed.

[0026] Specifically, the bottom end of the rectangular frame 211 is open. Figure 1 Taking the illustrated position as an example, two servo rails 212 are respectively disposed on the inner side walls on the left and right sides of the rectangular frame 211 , and the test unit 22 can slide upward or downward along the tracks of the servo rails 212 .

[0027] It should be noted that the structure of the servo rail 212 is well known to those skilled in the art, and the structure of the servo rail 212 is not described in detail in this embodiment.

[0028] Among them, the working principle of the servo slide 212 is: when the slider needs to move to a certain position, the controller will send a corresponding number of pulse signals to the servo motor 2331 in the servo slide 212, and the servo motor 2331 will rotate a corresponding angle according to the received pulse signal, and drive the slider to move along the track through a transmission mechanism (such as gears or belts). The encoder inside the servo motor 2331 monitors the movement state of the servo motor 2331 in real time, and sends a feedback signal to the controller to form a closed-loop control to ensure that the slider reaches the specified position accurately.

[0029] In this embodiment, a placement plate 12 is provided on the top surface of the mounting base plate 10. The placement plate 12 is located in the slide unit 21. A through hole 121 is opened on the placement plate 12. The bottom end of the clamping unit 23 is connected to the top surface of the mounting base plate 10. The top end of the clamping unit 23 extends upward through the through hole 121. By setting the placement plate 12, the three-dimensionality of the microcomputer-controlled manhole cover pressure testing machine 1 is improved.

[0030] In order to facilitate the movement of the microcomputer-controlled manhole cover pressure testing machine 1, two pairs of universal wheels 11 are arranged on the bottom surface of the mounting base plate 10, and the two pairs of universal wheels 11 are arranged at intervals along the length direction of the mounting base plate 10; by setting the universal wheels 11, the universal wheels 11 allow the microcomputer-controlled manhole cover pressure testing machine 1 to rotate freely at multiple angles on the horizontal plane, which makes the microcomputer-controlled manhole cover pressure testing machine 1 can be easily moved between different positions without laborious carrying or adjusting the direction. Whether on flat ground or slightly uneven areas, the universal wheels 11 can provide stable mobility to ensure that the microcomputer-controlled manhole cover pressure testing machine 1 can smoothly reach the test site.

[0031] Continue to refer to Figures 1 to 5 In this embodiment, the clamping unit 23 includes a clamping plate 231, a plurality of clamping arms 232 and a rotating unit 233. The bottom surface of the clamping plate 231 is connected to the top surface of the mounting base plate 10 through a mounting block 234. The plurality of clamping arms 232 are slidably connected to the clamping plate 231. The plurality of clamping arms 232 are arranged at intervals along the circumference of the clamping plate 231. The rotating unit 233 is arranged on the clamping plate 231. One end of each clamping arm 232 can be slidably inserted into the rotating unit 233. The rotating unit 233 is used to drive the plurality of clamping arms 23 2 Sliding; the manhole cover to be tested is used to be placed on the top surface of the rotating unit 233, and the rotating unit 233 drives multiple clamping arms 232 to slide inward to clamp and fix the manhole cover to be tested; by setting the clamping arms 232, it can be adjusted according to manhole covers of different sizes to achieve stable clamping and centering, ensuring stability and safety during the test. At the same time, the flexibility and applicability of the test are improved. The automatic centering function and precise force control can effectively reduce the risk of displacement or damage of the manhole cover during the test, and ensure the safety of testers and equipment.

[0032] Specifically, the bottom end of the mounting block 234 is connected to the top surface of the mounting base plate 10 , the top end of the mounting block 234 extends upward through the through hole 121 , and the bottom surface of the clamping plate 231 is connected to the top end of the mounting block 234 .

[0033] Continue to refer to Figure 5 and Figure 6In this embodiment, the clamping plate 231 is disc-shaped, and a plurality of slide grooves 2311 are provided on the clamping plate 231 . The slide grooves 2311 extend radially along the clamping plate 231 . The plurality of slide grooves 2311 are arranged radially, and the slide grooves 2311 are arranged one by one with the clamping arms 232 .

[0034] In order to prevent the clamping arm 232 from moving out of the sliding slot 2311 , stop plates 2312 are disposed on opposite sides of the upper opening of the sliding slot 2311 , and the stop plates 2312 extend inwardly.

[0035] It should be noted that the number of the slide grooves 2311 is substantially the same as the number of the clamping arms 232 .

[0036] Continue to refer to Figure 5 and Figure 7 In this embodiment, the clamping arm 232 includes an arc-shaped clamping portion 2321, a sliding rod 2322 and a limiting rod 2323. The first end of the sliding rod 2322 is connected to the inner wall near the bottom end of the arc-shaped clamping portion 2321, and the limiting rod 2323 is arranged on the top surface near the second end of the sliding rod 2322. The sliding rod 2322 is adapted to the sliding groove 2311, and the sliding rod 2322 is inserted into the sliding groove 2311, and the sliding rod 2322 can slide along the sliding groove 2311.

[0037] Specifically, the center line of the limiting rod 2323 is arranged perpendicular to the extension direction of the sliding rod 2322 .

[0038] In order to prevent the manhole cover to be tested from moving out of the clamping arm 232, a limit plate 2324 is provided on the inner wall near the top of the clamping portion. The limit plate 2324 extends inwardly. When the manhole cover to be tested is clamped, the limit plate 2324 is located on the upper part of the manhole cover to be tested.

[0039] A clamping strip 2325 is provided on the inner wall of the clamping portion, and the clamping strip 2325 is made of rubber. When the manhole cover to be tested is clamped, the clamping strip 2325 contacts the outer peripheral wall of the manhole cover to be tested, thereby preventing the manhole cover to be tested from being damaged.

[0040] Continue to refer to Figures 3 to 5 In this embodiment, the rotating unit 233 includes a motor 2331, a driving gear 2332 and a driven gear 2333. The motor 2331 is fixed to the bottom surface of the clamping plate 231. The output shaft of the motor 2331 passes through the clamping plate 231 and is inserted into the driving gear 2332. The driving gear 2332 can rotate relative to the clamping plate 231. The output shaft of the motor 2331 can drive the driving gear 2332 to rotate. The driven gear 2333 is rotatably connected to the clamping plate 231 through the rotating shaft 2334. The driven gear 2333 is meshed with the driving gear 2332. The rotation of the driving gear 2332 can drive the driven gear 2333 to rotate.

[0041] Specifically, the center line of the output shaft of the motor 2331 is arranged in parallel with the center line of the rotating shaft 2334 , and the center line of the rotating shaft 2334 is arranged in a colinear relationship with the center line of the clamping plate 231 .

[0042] The rotating shaft 2334 is disposed at the geometric center of the clamping plate 231 , the bottom end of the rotating shaft 2334 is connected to the top surface of the clamping plate 231 , and the top end of the rotating shaft 2334 extends upward along the center line of the clamping plate 231 and passes through the driven gear 2333 .

[0043] Continue to refer to Figure 5 In this embodiment, a plurality of arc grooves 2335 are provided on the driven gear 2333, and the plurality of arc grooves 2335 are arranged at intervals along the circumference of the driven gear 2333. The arc grooves 2335 are arranged one-to-one with the slide grooves 2311. One end of the limiting rod 2323 away from the slide rod 2322 is inserted into the arc groove 2335, and the limiting rod 2323 can slide along the arc groove 2335.

[0044] It should be noted that the number of the arc grooves 2335 is substantially the same as the number of the slide grooves 2311 .

[0045] During use, one end of the slide bar 2322 away from the clamping portion is inserted into the slide groove 2311, and the limit rod 2323 on the slide bar 2322 is inserted into the arc groove 2335. The output shaft of the motor 2331 drives the driving gear 2332 to rotate, and the driving gear 2332 drives the driven gear 2333 to rotate. When the driven gear 2333 rotates, the limit rod 2323 will move through the arc groove 2335. When the limit rod 2323 moves, it will drive the slide bar 2322 to slide along the slide groove 2311, and the slide bar 2322 drives the clamping portion to move inward to clamp the manhole cover to be tested.

[0046] Continue to refer to Figure 4 In this embodiment, the rotating unit 233 also includes a partition 2336, which is arranged at the top of the rotating shaft 2334. A gap is left between the partition 2336 and the driven gear 2333, and the manhole cover to be tested is placed on the top surface of the partition 2336; the partition 2336 plays a supporting role for the manhole cover to be tested.

[0047] Specifically, the partition 2336 is disc-shaped, and the center line of the partition 2336 is arranged parallel to the center line of the rotating shaft 2334. In some feasible embodiments, the center line of the partition 2336 and the center line of the rotating shaft 2334 are arranged colinearly.

[0048] In this embodiment, an anti-skid ring 2337 for preventing the manhole cover to be tested from sliding is provided on the partition 2336; by providing the anti-skid ring 2337, the stability of the manhole cover to be tested is improved.

[0049] Continue to refer to Figure 1 and Figure 2 In this embodiment, the test unit 22 includes a connecting plate 221, a pressure sensor 222 and a pressure plate 223. The opposite ends of the connecting plate 221 are respectively connected to the sliders on the two servo slide rails 212. The connecting plate 221 can slide along the track of the servo slide rails 212. The pressure sensor 222 is arranged at the bottom end of the connecting plate 221. The pressure sensor 222 is arranged at the end away from the connecting plate 221 with a pressure plate 223. By setting the pressure sensor 222, the pressure sensor can set safety limit parameters to prevent equipment damage or personal injury caused by overload.

[0050] During use, after the clamping arm 232 clamps and fixes the manhole cover to be tested, the servo slide 212 is started, and the connecting plate 221 drives the pressure sensor 222 and the pressure plate 223 to move vertically downward. The pressure sensor and the pressure plate 223 are against the top surface of the manhole cover. At this time, the connecting plate 221 is moved to test the manhole cover through the pressure sensor. The high-precision positioning characteristics of the servo slide 212 ensure that the force applied during the test is more accurate and controllable, which helps to accurately simulate the actual stress conditions of the manhole cover under different pressures, thereby improving the accuracy of the test results.

[0051] Furthermore, in this embodiment, a plurality of friction balls 2231 are disposed on a side of the pressure plate 223 facing away from the pressure sensor 222 , and each two adjacent friction balls 2231 are spaced apart.

[0052] The friction ball 2231 is made of rubber.

[0053] By setting the friction ball 2231, the friction ball 2231 has good elasticity and shock absorption performance. When the test unit 22 applies pressure to the manhole cover, the friction ball 2231 can absorb part of the impact energy and reduce the generation of vibration and noise. This can not only protect the manhole cover from possible damage caused by sudden impact, but also reduce noise pollution during the test process, providing a more comfortable working environment for the operator.

[0054] The testing process of the microcomputer-controlled manhole cover pressure testing machine 1 provided in this embodiment is as follows: the manhole cover to be tested is placed on the partition 2336 and located on the inner side of the clamping arm 232, and the motor 2331 is started at this time. The output shaft of the motor 2331 drives the driving gear 2332 to rotate, and the driving gear 2332 drives the driven gear 2333 to rotate. When the driven gear 2333 rotates, it forces the limit rod 2323 to move along the arc groove 2335 through the arc groove 2335, and when the limit rod 2323 moves, it drives the sliding rod 23 22 slides toward the middle of the clamping plate 231, and the sliding rod 2322 drives the clamping part to move toward the middle and clamp, and the manhole cover to be tested is clamped and fixed by the clamping part. At the same time, the partition plate 2336 and the anti-slip ring 2337 can support the manhole cover to be tested to increase stability; at this time, the servo slide rail 212 is started, and the connecting plate 221 drives the pressure sensor and the pressure plate 223 to move vertically downward, and the pressure sensor and the pressure plate 223 are against the top surface of the manhole cover to be tested. At this time, the connecting plate 221 is moved, and the manhole cover to be tested can be tested through the pressure sensor. The high-precision positioning characteristics of the servo slide 212 ensure that the force applied during the test is more accurate and controllable, which helps to accurately simulate the actual stress conditions of the manhole cover under different pressures, thereby improving the accuracy of the test results. In addition, the microcomputer-controlled manhole cover pressure testing machine 1 adopts an adaptive clamping design, which can be adjusted according to manhole covers of different sizes to achieve stable clamping and centering, ensuring stability and safety during the test, avoiding the tedious process of replacing or adjusting the fixture in the traditional method, and improving the flexibility and applicability of the test. The automatic centering function and precise force control can effectively reduce the risk of manhole cover displacement or damage during the test, and ensure the safety of testers and equipment. At the same time, the pressure sensor can set safety limit parameters, such as the maximum pressure value, to prevent equipment damage or personal injury caused by overload.

[0055] The microcomputer-controlled manhole cover pressure testing machine 1 provided in the present application comprises a mounting base plate 10 and a test assembly 20; the test assembly 20 is arranged on the top surface of the mounting base plate 10; the test assembly 20 comprises a slide unit 21, a test unit 22 and a clamping unit 23, the slide unit 21 comprises a rectangular frame 211 and two servo slide rails 212, the bottom end of the rectangular frame 211 is connected to the top surface of the mounting base plate 10, the two servo slide rails 212 are respectively arranged on the two opposite inner side walls of the rectangular frame 211, the opposite ends of the test unit 22 are respectively connected to the sliders on the two servo slide rails 212, and the test unit 22 can slide along the track of the servo slide rail 212; The holding unit 23 is arranged on the top surface of the mounting base plate 10, the clamping unit 23 is located in the slide unit 21 and is arranged corresponding to the test unit 22; the clamping unit 23 is used to fix the manhole cover to be tested; the test unit 22 is used to perform a pressure test on the manhole cover to be tested; on the one hand, by setting the servo slide rail 212, the servo slide rail 212 has a high-precision positioning characteristic, thereby ensuring that the force applied during the test process is more accurate and controllable, which helps to accurately simulate the actual force conditions of the manhole cover under different pressures, thereby improving the accuracy of the test results; on the other hand, by setting the clamping unit 23, compared with the manual adjustment of the fixture in the traditional method, the safety of the tester is guaranteed.

[0056] The microcomputer-controlled manhole cover pressure testing machine 1 provided by the present invention has the following advantages: the device has a simple structure, is easy to manufacture, and is convenient to operate.

[0057] 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. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0058] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A microcomputer-controlled manhole cover pressure testing machine, characterized in that: Including installation base plate and test components; The test assembly is arranged on the top surface of the mounting base plate; The test assembly includes a slide unit, a test unit and a clamping unit. The slide unit includes a rectangular frame and two servo slide rails. The bottom end of the rectangular frame is connected to the top surface of the mounting base plate. The two servo slide rails are respectively arranged on two opposite inner side walls of the rectangular frame. The opposite ends of the test unit are respectively connected to the sliders on the two servo slide rails. The test unit can slide along the tracks of the servo slide rails. The clamping unit is arranged on the top surface of the mounting base plate, the clamping unit is located in the slideway unit, and is arranged corresponding to the testing unit; The clamping unit is used to fix the manhole cover to be tested; The testing unit is used to perform a pressure test on the manhole cover to be tested.

2. The microcomputer-controlled manhole cover pressure testing machine according to claim 1 is characterized in that: The clamping unit comprises a clamping plate, a plurality of clamping arms and a rotating unit, the bottom surface of the clamping plate is connected to the top surface of the mounting base plate through a mounting block, the plurality of clamping arms are slidably connected to the clamping plate, the plurality of clamping arms are arranged at intervals along the circumference of the clamping plate, the rotating unit is arranged on the clamping plate, one end of each of the clamping arms can be slidably inserted on the rotating unit, and the rotating unit is used to drive the plurality of clamping arms to slide; The manhole cover to be tested is used to be placed on the top surface of the rotating unit, and the rotating unit drives the plurality of clamping arms to slide inwardly to clamp and fix the manhole cover to be tested.

3. The microcomputer-controlled manhole cover pressure testing machine according to claim 2 is characterized in that: The clamping plate is provided with a plurality of slide grooves, each of which extends along the radial direction of the clamping plate. The plurality of slide grooves are arranged in a radial shape, and the slide grooves are arranged in a one-to-one correspondence with the clamping arms.

4. The microcomputer-controlled manhole cover pressure testing machine according to claim 3 is characterized in that: The clamping arm includes an arc-shaped clamping portion, a sliding rod and a limiting rod. The first end of the sliding rod is connected to the inner wall near the bottom end of the arc-shaped clamping portion, and the limiting rod is arranged on the top surface near the second end of the sliding rod. The sliding rod is adapted to the sliding groove, and the sliding rod is inserted into the sliding groove, and the sliding rod can slide along the sliding groove.

5. The microcomputer-controlled manhole cover pressure testing machine according to claim 4 is characterized in that: The rotating unit comprises a motor, a driving gear and a driven gear, wherein the motor is fixed to the bottom surface of the clamping plate, the output shaft of the motor passes through the clamping plate and is inserted on the driving gear, the driving gear can rotate relative to the clamping plate, the output shaft of the motor can drive the driving gear to rotate, the driven gear is rotatably connected to the clamping plate via a rotating shaft, the driven gear is meshed with the driving gear, and the rotation of the driving gear can drive the driven gear to rotate; The driven gear is provided with a plurality of arc grooves, which are arranged at intervals along the circumference of the driven gear, and the arc grooves are arranged in a one-to-one correspondence with the slide grooves. The end of the limit rod away from the slide rod is inserted into the arc groove, and the limit rod can slide along the arc groove; The output shaft of the motor drives the driving gear to rotate, and the driving gear drives the driven gear to rotate. When the driven gear rotates, the limit rod moves through the arc groove, and when the limit rod moves, the slide rod slides along the slide groove.

6. The microcomputer-controlled manhole cover pressure testing machine according to claim 5 is characterized in that: The rotating unit further comprises a partition plate, which is arranged at the top end of the rotating shaft, and a gap is left between the partition plate and the driven gear, and the manhole cover to be tested is used to be placed on the top surface of the partition plate.

7. The microcomputer-controlled manhole cover pressure testing machine according to claim 6 is characterized in that: The partition plate is provided with an anti-skid ring for preventing the manhole cover to be tested from sliding.

8. The microcomputer-controlled manhole cover pressure testing machine according to claim 1 is characterized in that: The test unit includes a connecting plate, a pressure sensor and a pressure plate. The opposite ends of the connecting plate are respectively connected to the sliders on the two servo slide rails. The connecting plate can slide along the track of the servo slide rails. The pressure sensor is arranged at the bottom end of the connecting plate, and the pressure plate is arranged at the end of the pressure sensor away from the connecting plate.

9. The microcomputer-controlled manhole cover pressure testing machine according to claim 8 is characterized in that: A plurality of friction balls are arranged on a side of the pressure plate facing away from the pressure sensor, and each two adjacent friction balls are arranged at intervals.

10. The microcomputer-controlled manhole cover pressure testing machine according to claim 9, characterized in that: The friction ball is made of rubber.

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