Floor plate flatness detection equipment

Abstract

The invention provides floor plate flatness detection equipment, and belongs to the technical field of building detection.The floor plate flatness detection equipment comprises a detection component, the detection component comprises a supporting seat, the outer wall of the supporting seat is connected with a connecting assembly, and the outer wall of the supporting seat is connected with a detection assembly through the connecting assembly; the top of the detection assembly is movably connected with a top support assembly, the inner wall of the top support assembly is fixedly connected with a lifting hydraulic cylinder, and the lifting hydraulic cylinder is used for position regulation and control of the detection assembly. The ink awakening part comprises a lower pressing contact assembly and a pressing contact switch which are fixedly connected to the outer wall of the detection assembly, and an inclined pressing contact assembly and an upper pressing contact assembly which are movably connected to the inner wall of the detection assembly; through arrangement of the detection component and cooperative work of the supporting seat, the connecting assembly, the detection assembly, the top support assembly and the lifting hydraulic cylinder, the floor plate flatness detection efficiency and precision are remarkably improved, and multi-point synchronous detection is achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of building inspection, specifically relating to a floor slab flatness testing device. Background Technology

[0002] Floor slab flatness testing is a crucial quality control step in construction engineering. The accuracy of the test results directly affects subsequent floor finishing (such as the laying of floor tiles and wood flooring), the levelness of the installation of various equipment and facilities, and the overall safety and appearance of the building. Floor slabs that do not meet flatness standards can not only cause hollow spots and warping in the flooring materials, affecting aesthetics and service life, but may also lead to safety problems in severe cases.

[0003] Currently, the most widely used method for floor slab flatness testing on construction sites is manual inspection using a 2-meter straightedge and a wedge gauge. The specific operating procedure is as follows: the straightedge is placed on its side with its measuring surface in close contact with the surface of the floor slab to be tested. The location of the largest gap between the straightedge and the ground is determined by visual inspection or touch. Then, the wedge gauge is inserted into the gap, and the flatness deviation is determined by reading the scale value on the gauge.

[0004] However, this traditional detection method has many inherent drawbacks: The inspection efficiency is extremely low: due to the limited length of the straightedge (usually 2 meters or 4 meters), each inspection can only obtain flatness information along a narrow straight line. To assess the flatness of the entire floor area (especially large-span spaces), multiple, dense "grid-like" measurement points are required. This process requires inspectors to repeatedly move, place, and align the straightedge, consuming a lot of manpower and time, making it difficult to meet the fast and efficient quality inspection needs of modern building construction. Limited functionality and inability to perform surface scanning: This method is essentially a sampling inspection that "substitutes lines for surfaces," failing to comprehensively and intuitively reflect the flatness of the entire floor slab. It easily misses local depressions or protrusions between the straightedge measurement lines, making it impossible to form a macroscopic and continuous evaluation of the overall construction surface quality. Summary of the Invention

[0005] The purpose of this invention is to provide a floor slab flatness testing device, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A floor slab flatness testing device includes a testing component, which includes a support base. A connecting assembly is connected to the outer wall of the support base, and the testing component is connected to the outer wall of the support base via the connecting assembly. A top support assembly is movably connected to the top of the testing component, and a lifting hydraulic cylinder is fixedly connected to the inner wall of the top support assembly for position adjustment of the testing component. The device also includes an ink-refreshing component, which includes a lower pressure contact assembly and a pressure switch fixedly connected to the outer wall of the testing component, and an oblique pressure contact assembly and an upper pressure contact assembly movably connected to the inner wall of the testing component. The upper pressure contact assembly is used to trigger the pressure switch, and the lower and oblique pressure contact assemblies are used in conjunction.

[0007] In a preferred embodiment of the present invention, the connecting assembly includes a first connecting plate and a second connecting plate that are fitted and connected to the outer wall of the support base. A pivot pin is movably connected to the inner wall of one end of the first connecting plate and the second connecting plate. A plurality of positioning holes are provided on the outer wall of the first connecting plate and the second connecting plate, and the plurality of positioning holes are arranged in a ring around the pivot pin. A positioning screw is inserted into the inner wall of the positioning hole, and a corner bracket is threaded to the outer wall of the positioning screw.

[0008] As a preferred embodiment of the present invention, the top support assembly includes a hanger fixedly connected to the fixed end of the lifting hydraulic cylinder, and a connecting seat is fixedly connected to the distributed bottom end of the hanger, and an inner sliding groove is formed on the inner wall of the connecting seat.

[0009] In a preferred embodiment of the present invention, the detection component includes a vertical rod movably connected to the inner wall of the connecting seat, a limiting roller fixedly connected to the outer wall of the vertical rod, and an inclined slide connected to the outer wall of the vertical rod.

[0010] In a preferred embodiment of the present invention, a detection base is fixedly connected to the bottom of the upright, an ink storage box is fixedly connected to the top of the detection base, a detection ball is rotatably connected to the inner wall of the detection base, a spring cylinder is inserted into the inner wall of the detection base, an ink storage sponge is fixedly connected to one end of the spring cylinder, and an ink storage channel is formed on the inner wall of the detection base.

[0011] As a preferred embodiment of the present invention, the downward pressing contact assembly includes an outer sleeve fixed to the lower end of the inclined slide, a miniature hydraulic cylinder fixedly connected to the inner wall of the outer sleeve, an inner slide rod fixedly connected to one end of the miniature hydraulic cylinder, and a pressure rod fixedly connected to one end of the inner slide rod.

[0012] In a preferred embodiment of the present invention, the inclined pressure contact assembly includes a first reset spring fixedly connected to the inner wall of the detection base, one end of the first reset spring being fixedly connected to a slide rod, and one end of the slide rod being fixedly connected to an inclined pressure block.

[0013] As a preferred embodiment of the present invention, the upper pressure contact assembly includes a second return spring fixedly connected to the inner wall of the inclined slide, and one end of the second return spring is fixedly connected to a horizontal pressure rod.

[0014] As a preferred embodiment of the present invention, an abutment rod is vertically fixedly connected to the outer wall of the horizontal pressure rod, and the end of the abutment rod away from the horizontal pressure rod is positioned directly above the pressure end of the pressure switch.

[0015] As a preferred embodiment of the present invention, there are multiple support bases, and each support base is fixedly connected to a caster wheel at its bottom.

[0016] Compared with the prior art, the beneficial effects of the present invention are: By setting up the detection components and through the coordinated work of the support base, connecting components, detection components, top support components and lifting hydraulic cylinders, the efficiency and accuracy of floor slab flatness detection are significantly improved. Multi-point synchronous detection is achieved, covering a large area, reducing random errors in single-point detection, and improving the comprehensiveness and accuracy of the detection. By setting up the ink-reviving component and linking the lower pressure contact component, the pressure contact switch, the angled pressure contact component and the upper pressure contact component, the timely supply of ink and the reliable marking of the detection ball are ensured during the detection process, thereby improving the continuity and accuracy of the detection. The ink-reviving component, through automated ink management, addresses the problem of low detection accuracy in the background technology and ensures the clarity and consistency of the marking. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the top support assembly of the present invention; Figure 3 This is a schematic diagram of the structure of the connection component of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the detection component of the present invention.

[0018] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0019] Figure 7This is a schematic diagram of the structure of the downward pressure contact assembly and the oblique pressure contact assembly of the present invention.

[0020] Figure 8 This is a schematic diagram of the structure of the pressure contact assembly of the present invention.

[0021] In the diagram: 10. Support base; 11. Top support assembly; 111. Connecting seat; 112. Hanger; 113. Inner slide groove; 12. Lifting hydraulic cylinder; 13. Connecting assembly; 131. First connecting plate; 132. Second connecting plate; 133. Positioning hole; 134. Turning pin; 135. Positioning screw; 136. Angle bracket; 14. Detection assembly; 141. Inclined slide; 142. Upright pole; 143. Limiting roller; 144. Detection base; 145. Spring cylinder; 146. Ink reservoir sponge; 147. Detection ball; 148. Ink reservoir box; 149. Ink reservoir channel; 20. Lower pressure contact assembly; 201. Outer sleeve; 202. Inner slide rod; 203. Pressure rod; 21. Angled pressure contact assembly; 211. Slide rod; 212. First return spring; 213. Angled pressure block; 22. Pressure switch; 23. Upper pressure contact assembly; 231. Horizontal pressure rod; 232. Second return spring; 233. Abutment rod. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Example 1

[0023] Reference Figure 1-6 This is the first embodiment of the present invention. This embodiment provides a floor slab flatness testing device, including a testing component. The testing component includes a support base 10. A connecting component 13 is connected to the outer wall of the support base 10. A testing component 14 is connected to the outer wall of the support base 10 through the connecting component 13. A top support component 11 is movably connected to the top of the testing component 14. A lifting hydraulic cylinder 12 is fixedly connected to the inner wall of the top support component 11. The lifting hydraulic cylinder 12 is used for position adjustment of the testing component 14. The connecting component 13 includes a first connecting plate 131 and a second connecting plate 132 that are fitted and connected to the outer wall of the support base 10. A pivot pin 134 is movably connected to the inner wall of one end of the first connecting plate 131 and the second connecting plate 132. A plurality of positioning holes 133 are opened on the outer wall of the first connecting plate 131 and the second connecting plate 132, and the plurality of positioning holes 133 are arranged around the pivot pin 134. A positioning screw pin 135 is inserted into the inner wall of the positioning hole 133, and a corner bracket 136 is threadedly connected to the outer wall of the positioning screw pin 135. The top support assembly 11 includes a hanger 112 fixedly connected to the fixed end of the lifting hydraulic cylinder 12. A connecting seat 111 is fixedly connected to the distributed bottom end of the hanger 112. An inner groove 113 is provided on the inner wall of the connecting seat 111. The detection assembly 14 includes a vertical rod 142 movably connected to the inner wall of the connecting seat 111, a limit roller 143 fixedly connected to the outer wall of the vertical rod 142, and an inclined slide 141 slidably connected to the outer wall of the vertical rod 142.

[0024] A detection base 144 is fixedly connected to the bottom of the upright 142, an ink storage box 148 is fixedly connected to the top of the detection base 144, a detection ball 147 is rotatably connected to the inner wall of the detection base 144, a spring cylinder 145 is inserted into the inner wall of the detection base 144, an ink storage sponge 146 is fixedly connected to one end of the spring cylinder 145, and an ink storage channel 149 is opened on the inner wall of the detection base 144. There are multiple support bases 10, and each support base 10 has a caster wheel fixedly connected to its bottom; Among them, there are multiple pivot pins 134, corner brackets 136 and positioning screw pins 135. The outer walls of the support base 10 and the inclined slide 141 are fixedly connected to supplementary protrusions, and the outer wall of the supplementary protrusions is fixedly connected to the inner wall of one end of the pivot pin 134. The corner bracket 136 is fixedly connected to the outer wall of the supplementary protrusions. The connecting component 13 comprises a first connecting plate 131 and a second connecting plate 132, which are movably connected by a pivot pin 134 and have multiple positioning holes 133 arranged in a ring. These are quickly locked using positioning screws 135 and a bracket 136. This design allows the detection component 14 to be quickly deployed and fixed on the support base 10, avoiding the limitation of traditional straightedges that can only detect the area near a straight line at a time. During the detection process, the user only needs to pull the support base 10 outward and insert the positioning screws 135 into the corresponding positioning holes 133 to lock the position, eliminating the need for repeated movement and adjustment of the equipment. This significantly reduces preparation time before detection, enabling the equipment to cover a larger area of ​​floor slabs simultaneously, thus detecting more areas per unit time and improving overall efficiency by approximately 50% or more. This is especially beneficial for detecting large-area floor slabs. Meanwhile, the connecting component 13, through the precise engagement of the positioning socket 133 and the positioning pin 135, ensures the positional stability and repeatability of the detection component 14 after deployment. The first connecting plate 131 and the second connecting plate 132 achieve angle adjustment via the pivot pin 134 and provide multiple fixing points through the ring-shaped positioning sockets 133, enabling the detection component 14 to be accurately held in the preset position and avoiding errors caused by equipment displacement or shaking during the detection process. Compared to traditional straightedges and wedge gauges that rely on manual insertion and reading, the mechanical locking of the connecting component 13 reduces human interference and ensures consistent contact between the detection ball 147 and the ground, thereby improving the accuracy and reliability of flatness detection. This design is particularly suitable for construction projects with high precision requirements, effectively solving the problem of low detection accuracy in the prior art. Furthermore, the adjustable design of the connecting component 13 allows the device to adapt to floor slabs of different sizes and shapes. By selecting different positions of the positioning sockets 133, users can adjust the unfolding angle and range of the detection component 14, thereby enabling customized detection for specific areas. This flexibility not only improves the applicability of the device in complex environments but also reduces the need for tool replacement or adjustment, indirectly improving detection efficiency. In addition, the collaborative work of the connecting component 13 with the support base 10 and the detection component 14 ensures the compactness of the device during movement and storage, facilitating transportation and deployment. Overall, the connecting component 13, through its adaptive characteristics, makes floor slab flatness detection more efficient and convenient.

[0025] Furthermore, firstly, the first connecting plate 131 and the second connecting plate 132 of the connecting assembly 13 allow users to flexibly adjust the angle and position of the detection assembly 14 through the pivot pin 134 and the positioning socket 133. Combined with the locking of the positioning screw pin 135 and the corner bracket 136, the equipment can adapt to detection areas of different sizes, avoiding the tedious process of moving and adjusting the traditional ruler multiple times, thereby improving detection efficiency.

[0026] The extension end of the lifting hydraulic cylinder 12 is fixedly connected to a connecting disc, and the periphery of the connecting disc is fixedly connected to the upper outer wall of the inclined slide 141.

[0027] Preferably, secondly, the lifting hydraulic cylinder 12 controls the upright 142 to descend along the inclined slide 141, so that multiple detection bases 144 simultaneously contact the ground, and the detection ball 147 is pressed tightly against the ground under the elastic force of the spring cylinder 145, realizing multi-point synchronous detection, covering a large area, reducing the random error of single-point detection, and improving the comprehensiveness and accuracy of detection.

[0028] Among them, the top of the upright 142 is symmetrically fixedly connected with sliding pins, and the outer wall of the sliding pin is slidably connected to the inner wall of the inner slide groove 113; there are multiple limiting rollers 143 on each, and the multiple limiting rollers 143 are symmetrically arranged on the upper and lower sides of the inclined slide 141; the ink storage sponge 146 is an arc-shaped ink storage sponge, and the outer wall of the ink storage sponge 146 is in contact with the outer wall of the detection ball 147; It should be noted that, in addition, the hanger 112 and the connecting seat 111 of the top support assembly 11 ensure that the upright 142 slides smoothly through the inner sliding groove 113, avoiding the instability of manual operation and further ensuring the reliability of the test results; Overall, the detection components, through mechanization and multi-point detection design, solve the problems of low efficiency and low accuracy in the background technology, and are suitable for large-scale building inspection scenarios.

[0029] In use, first, place the testing equipment above the floor slab to be tested. Manually pull the support base 10 outward to unfold the entire device. The casters at the bottom of the support base 10 facilitate movement and positioning. After unfolding, fix it using the connecting assembly 13: the first connecting plate 131 and the second connecting plate 132 are movably connected by a pivot pin 134. The user adjusts the angle according to the testing requirements, then inserts the positioning screw pin 135 into the corresponding positioning hole 133 and rotates it to lock the corner bracket 136, thus completing the position locking between the support base 10, the connecting assembly 13, and the testing assembly 14, ensuring the stability of the equipment. Activate the lifting hydraulic cylinder 12, whose fixed end is fixed to the hanger 112. The telescopic end of the lifting hydraulic cylinder 12 pushes the upright 142 downward. The upright 142 slides along the inclined slide 141. Due to the inclined design of the inclined slide 141, the upright 142 moves outward during descent, so that multiple testing bases 144 are evenly distributed in the testing area. When the detection ball 147 in the detection base 144 at the bottom of the upright 142 contacts the ground, the lifting hydraulic cylinder 12 stops. At this time, the detection ball 147 is in close contact with the ground, ready for detection. The device is pushed to move on the floor slab, and the detection ball 147 rolls on the ground. If the ground is flat, all detection balls 147 will leave ink marks; if the ground is uneven, the detection balls 147 in the depressions or lower positions cannot contact the ground and therefore will not leave ink marks. The user can quickly determine the flatness problem area by observing the continuity of the ink marks. After the detection is completed, the lifting hydraulic cylinder 12 is controlled to lift the upright 142, so that the detection ball 147 is lifted off the ground. The second return spring 232 of the upper pressure contact assembly 23 resets the horizontal pressure rod 231, the pressure switch 22 is closed, the miniature hydraulic cylinder of the lower pressure contact assembly 20 retracts, and the pressure rod 203 moves upward. The first reset spring 212 of the inclined pressure contact assembly 21 pushes the slide bar 211 and the inclined pressure block 213 to reset, the spring cylinder 145 returns to its original state, and the ink storage channel 149 closes. The angle or position of the connecting assembly 13 can be adjusted as needed for the next test. Example 2

[0030] Reference Figure 7-8 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a floor slab flatness detection device, including an ink-reflecting component. The ink-reflecting component includes a lower pressure contact component 20 and a pressure contact switch 22 fixedly connected to the outer wall of the detection component 14, and an oblique pressure contact component 21 and an upper pressure contact component 23 movably connected to the inner wall of the detection component 14. The upper pressure contact component 23 is used to trigger the pressure contact switch 22, and the lower pressure contact component 20 and the oblique pressure contact component 21 are used in conjunction. The pressing contact assembly 20 includes an outer sleeve 201 fixed to the lower end of the inclined slide 141. A micro hydraulic cylinder is fixedly connected to the inner wall of the outer sleeve 201. An inner slide rod 202 is fixedly connected to one end of the micro hydraulic cylinder. A pressure rod 203 is fixedly connected to one end of the inner slide rod 202. The inclined pressure contact assembly 21 includes a first reset spring 212 fixedly connected to the inner wall of the detection base 144, a slide rod 211 fixedly connected to one end of the first reset spring 212, and an inclined pressure block 213 fixedly connected to one end of the slide rod 211. The upper pressure contact assembly 23 includes a second return spring 232 fixedly connected to the inner wall of the inclined slide 141, and a horizontal pressure rod 231 fixedly connected to one end of the second return spring 232; A contact rod 233 is vertically fixed to the outer wall of the horizontal pressure rod 231. The end of the contact rod 233 away from the horizontal pressure rod 231 is located directly above the contact end of the pressure switch 22.

[0031] Specifically, firstly, when the upright 142 descends, the horizontal pressure rod 231 and the abutment rod 233 of the upper pressure contact assembly 23 trigger the pressure contact switch 22, automatically activating the micro hydraulic cylinder of the lower pressure contact assembly 20. This pushes the pressure rod 203 downward, causing it to press against the slide rod 211 of the inclined pressure contact assembly 21. This causes the inclined pressure block 213 to squeeze the spring cylinder 145, opening the ink storage channel 149. This allows the ink in the ink storage box 148 to flow into the detection ball 147 and the ink storage sponge 146. This process is completed automatically before detection, avoiding marking failures due to ink drying and solving the unreliability problem of relying on manual ink application in traditional methods. Secondly, the ink-refreshing component is automatically activated before each detection, ensuring that the detection ball 147 is always wet, reducing detection interruptions and repetitive operations, and improving detection efficiency. Meanwhile, the first return spring 212 of the inclined pressure contact assembly 21 and the second return spring 232 of the upper pressure contact assembly 23 automatically reset after detection, keeping the ink system sealed, preventing ink evaporation or leakage, and extending the service life of the equipment. Overall, the ink-reflecting component, through automated ink management, addresses the problem of low detection accuracy in the background technology, ensuring the clarity and consistency of the markings, and improving the overall detection quality.

[0032] During use, when the upright 142 moves downward to the lower end of the inclined slide 141, the outer wall of the upright 142 presses against the horizontal pressure bar 231 of the upper pressure assembly 23. The horizontal pressure bar 231 triggers the pressure switch 22 via the abutment bar 233. The pressure switch 22 activates the micro hydraulic cylinder in the lower pressure assembly 20, which extends and pushes the inner slide bar 202 and the pressure bar 203 downward. The pressure bar 203 presses against the slide bar 211 of the inclined pressure assembly 21. The slide bar 211 overcomes the elastic force of the first return spring 212 and drives the inclined pressure block 213 to move towards the spring cylinder 145. The inclined pressure block 213 squeezes the spring cylinder 145, causing it to contract, and at the same time opens the ink storage channel 149. The ink in the ink storage box 148 flows through the ink storage channel 149 to the detection ball 147, soaking the detection ball 147 and replenishing the ink storage sponge 146 with ink, ensuring sufficient ink and preventing the ink from drying out due to prolonged disuse.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A floor slab flatness testing device, characterized in that: include, The detection component includes a support base (10), the outer wall of which is connected to a connecting component (13), the outer wall of which is connected to a detection component (14) via the connecting component (13), the top of which is movably connected to a top support component (11), and the inner wall of which is fixedly connected to a lifting hydraulic cylinder (12), the lifting hydraulic cylinder (12) being used for position adjustment of the detection component (14); The ink-refreshing component includes a lower pressure contact component (20) and a pressure contact switch (22) fixedly connected to the outer wall of the detection component (14), and an oblique pressure contact component (21) and an upper pressure contact component (23) movably connected to the inner wall of the detection component (14). The upper pressure contact component (23) is used to trigger the pressure contact switch (22), and the lower pressure contact component (20) and the oblique pressure contact component (21) are used together.

2. The floor slab flatness testing device according to claim 1, characterized in that: The connecting assembly (13) includes a first connecting plate (131) and a second connecting plate (132) that are attached to the outer wall of the support base (10). A pivot pin (134) is movably connected to the inner wall of one end of the first connecting plate (131) and the second connecting plate (132). A plurality of positioning holes (133) are provided on the outer wall of the first connecting plate (131) and the second connecting plate (132), and the plurality of positioning holes (133) are arranged around the pivot pin (134). A positioning screw pin (135) is inserted into the inner wall of the positioning hole (133), and a corner bracket (136) is threadedly connected to the outer wall of the positioning screw pin (135).

3. The floor slab flatness testing device according to claim 2, characterized in that: The top support assembly (11) includes a hanger (112) fixedly connected to the fixed end of the lifting hydraulic cylinder (12), and a connecting seat (111) is fixedly connected to the bottom of the hanger (112), and an inner groove (113) is provided on the inner wall of the connecting seat (111).

4. The floor slab flatness testing device according to claim 3, characterized in that: The detection component (14) includes a vertical rod (142) movably connected to the inner wall of the connecting seat (111), a limit roller (143) fixedly connected to the outer wall of the vertical rod (142), and a slanted slide (141) slidably connected to the outer wall of the vertical rod (142).

5. The floor slab flatness testing device according to claim 4, characterized in that: The bottom of the upright (142) is fixedly connected to a detection base (144), the top of the detection base (144) is fixedly connected to an ink storage box (148), the inner wall of the detection base (144) is rotatably connected to a detection ball (147), the inner wall of the detection base (144) is inserted with a spring cylinder (145), one end of the spring cylinder (145) is fixedly connected to an ink storage sponge (146), and the inner wall of the detection base (144) is provided with an ink storage channel (149).

6. The floor slab flatness testing device according to claim 4, characterized in that: The lower pressure contact assembly (20) includes an outer sleeve (201) fixed to the lower end of the inclined slide (141). A micro hydraulic cylinder is fixedly connected to the inner wall of the outer sleeve (201). An inner slide rod (202) is fixedly connected to one end of the micro hydraulic cylinder. A pressure rod (203) is fixedly connected to one end of the inner slide rod (202).

7. The floor slab flatness testing device according to claim 5, characterized in that: The inclined pressure contact assembly (21) includes a first reset spring (212) fixedly connected to the inner wall of the detection base (144), a slide rod (211) fixedly connected to one end of the first reset spring (212), and an inclined pressure block (213) fixedly connected to one end of the slide rod (211).

8. The floor slab flatness testing device according to claim 4, characterized in that: The upper pressure contact assembly (23) includes a second return spring (232) fixedly connected to the inner wall of the inclined slide (141), and a horizontal pressure rod (231) is fixedly connected to one end of the second return spring (232).

9. The floor slab flatness testing device according to claim 8, characterized in that: A contact rod (233) is vertically fixed to the outer wall of the horizontal pressure rod (231), and the end of the contact rod (233) away from the horizontal pressure rod (231) is located directly above the contact end of the pressure switch (22).

10. A floor slab flatness testing device according to claim 9, characterized in that: The number of the support bases (10) is multiple, and each support base (10) has a caster wheel fixedly connected to its bottom.

Images