Concrete strength detection device for road construction

Abstract

The invention provides a concrete strength detection device for road construction, which comprises a pressure test mechanism, the pressure test mechanism is provided with a base, the top of the base is fixedly provided with a pressure-bearing support table, the center of the upper part of the pressure-bearing support table is provided with a square protective fence, and the square protective fence is provided with a plurality of grooves. Lifting mechanisms are symmetrically arranged above the protective fence, the lifting mechanisms are fixedly erected above the protective fence, the lifting mechanisms drive the protective fence to move up and down, and centering mechanisms corresponding to the side faces of a test block are arranged in the protective fence; according to the invention, the square protective fence can form a continuous barrier around the test block, so that broken concrete can be prevented from splashing all around in the test process, and the test protection effect is improved; the automatic centering of the test block, the anti-splashing in the test process and the lifting of the protective fence can be realized only by controlling the position of the lifting mechanism.

Description

Technical Field

[0001] The present invention belongs to the technical field of testing equipment, and particularly relates to a concrete strength detection device for road construction. Background Art

[0002] As the main building material, the strength of concrete directly affects the durability and safety of roads. If the strength is insufficient, it may lead to pavement cracking, deformation, and even structural failure, posing potential safety hazards.

[0003] The test block method is the basic method for concrete strength detection in road construction. By making standard cube test blocks (such as 150mm×150mm×150mm) for compressive tests, it directly reflects the strength of the concrete itself. It is required to leave at least 1 group of test blocks (3 blocks in each group) for every 100m3 of concrete poured for strength evaluation after 28 days of standard curing, which is the core basis for quality acceptance.

[0004] In the prior art, the Chinese utility model patent document with the authorization announcement number CN210243374U discloses a pressure testing machine convenient for chip collection. A lower pressing plate is arranged on the pressure bearing platform, and a cleaning device for cleaning the residue of the test block on the lower pressing plate is arranged on the lower pressing plate. An activity cover door is also arranged on one side of the lower pressing plate, and a lifting mechanism for lifting the activity cover door is also arranged on the base. When the activity cover door rises, it is used as a protective cover for blocking the flying fragments generated when the test block breaks. When the cover door falls, it is used to guide the test block waste pushed out from the lower pressing plate by the cleaning device into the waste bucket. In the above prior art, the activity cover door can only protect one side of the test block, and the protection effect is limited. Moreover, when the test block is placed on the top of the lower pressing plate, manual positioning is required to avoid the offset of the test block affecting the test results. Manual positioning not only takes time, but also the positioning accuracy is greatly affected by human factors.

[0005] In some prior arts, although mechanisms capable of positioning test blocks are disclosed. For example, in the Chinese invention patent document with the authorization announcement number CN119246217B, a concrete strength detection device is disclosed, which specifically discloses a calibration component for test block positioning. It needs to occupy the space on the top of the pressure bearing support platform, which is not convenient for cleaning the top of the pressure bearing support platform after the test.

[0006] Therefore, it is necessary to design a concrete strength detection device for road construction that can improve the test protection effect and automatically perform centering and positioning on the test block to solve the current technical problems. Summary of the Invention

[0007] Aiming at the deficiencies in the prior art, the present invention provides a concrete strength detection device for road construction that can improve the test protection effect and automatically perform centering and positioning on the test block.

[0008] The technical solution of the present invention is: a concrete strength detection device for road construction, comprising a pressure testing mechanism, the pressure testing mechanism having a base, a pressure-bearing support fixedly arranged on the top of the base, a pressure plate corresponding to the middle part of the pressure-bearing support arranged above the pressure-bearing support, and a downward pressure driving cylinder driving the pressure plate to move up and down arranged above the pressure plate; A regular quadrilateral protective enclosure is centrally arranged above the pressure-bearing support, and a lifting mechanism is symmetrically arranged above the protective enclosure. The lifting mechanism is fixedly mounted above the protective enclosure, and the lifting mechanism drives the protective enclosure to move up and down. Centering mechanisms corresponding to the side faces of the test block are arranged inside the protective enclosure.

[0009] Furthermore, a lifting frame corresponding to the protective enclosure is arranged above the protective enclosure, and the lifting mechanism drives the lifting frame to move up and down, and the protective enclosure is slidably connected to the bottom of the lifting frame along the vertical direction; the centering mechanism has a centering push rod corresponding to the side of the test block, and both ends of the centering push rod are hinged with an upper connecting rod and a lower connecting rod, an end of the lower connecting rod facing away from the centering push rod is hinged to the inner bottom of the protective enclosure, and an end of the upper connecting rod facing away from the centering push rod is hinged to the inner side of the lifting frame.

[0010] Furthermore, a reset slide is evenly arranged on the outer side of the top end of the protective enclosure, a slide rod is slidably arranged inside the reset slide along the vertical direction, the upper end of the slide rod is fixedly connected to the bottom of the lifting frame, a limit plate is fixedly arranged on the lower end of the slide rod, and a reset spring is mounted on the outer side of the slide rod between the reset slide and the lifting frame.

[0011] Furthermore, the lifting mechanism has an upper support plate and a lower support plate that are parallel to each other, two lifting guide rods are symmetrically arranged between the upper support plate and the lower support plate, a lifting support is slidably arranged on the lifting guide rod, a lifting screw is threadedly connected to the middle part of the lifting support, both ends of the lifting screw are rotatably connected to the upper support plate and the lower support plate respectively, and a lifting drive motor for driving the lifting screw to rotate is arranged on the upper support plate; the lifting support is fixedly mounted above the protective enclosure through an enclosure bracket.

[0012] Furthermore, a pressure-bearing platform is slidably provided on the top of the pressure-bearing support, and a translation mechanism for driving the pressure-bearing platform to reciprocate is fixedly mounted on one side of the base, and the translation mechanism is hinged to one side of the pressure-bearing platform.

[0013] Further, a platen bracket is fixedly arranged at one end of the pressure-bearing support platform away from the translation mechanism. The included angle α between the platen bracket and the top surface of the pressure-bearing support platform is an obtuse angle. The platen bracket and the pressure-bearing support platform are smoothly transitioned through an arc transition plate. Side plates are fixedly arranged between both ends of the platen bracket and the pressure-bearing support platform.

[0014] Further, a cleaning mechanism is arranged above the platen bracket. The cleaning mechanism has a cleaning roller corresponding to the pressure-bearing platen. Both ends of the cleaning roller are rotatably provided with cleaning roller shaft seats. A cleaning roller drive motor for driving the cleaning roller to rotate is arranged on the cleaning roller shaft seats. A lifting drive cylinder for driving the cleaning roller to move up and down is arranged on the side plate.

[0015] Further, a dust collection hood corresponding to the cleaning roller is fixedly mounted on one side of the cleaning roller shaft seat away from the protective enclosure. One side and the bottom of the dust collection hood close to the cleaning roller are open. A suction pipe communicated with the dust collection hood is arranged on the dust collection hood.

[0016] Further, the translation mechanism has a bracket fixedly mounted above one side of the base. A translation drive cylinder is centrally arranged on the bracket. The end of the translation drive cylinder is hinged to the pressure-bearing platen.

[0017] Further, two translation guide rods parallel to the axis of the translation drive cylinder are symmetrically arranged on the bracket. The ends of the translation guide rods are hinged to the pressure-bearing platen. A translation sliding seat is slidably arranged on the outer side of the translation guide rods. The translation sliding seat is fixedly arranged on the top of the bracket.

[0018] Advantages of the present invention: (1) In the present invention, the regular quadrilateral protective enclosure can form a continuous barrier around the test block, and can prevent the broken concrete from splashing around during the test, improving the test protection effect; (2) When the lifting mechanism is in the first position, the protective enclosure is at the highest position. The gap between the protective enclosure and the pressure-bearing support platform can be used to place the test block on the top of the pressure-bearing support platform. After the test block is placed on the top of the pressure-bearing support platform, the lifting mechanism drives the protective enclosure to move down to its second position and surround the outside of the test block. The lifting mechanism continues to move down to its third position. During the process of moving down to its third position, the centering mechanisms around the protective enclosure move synchronously towards the axis direction of the pressure application plate, pushing the test block to be centered above the pressure-bearing support platform and corresponding to the pressure application plate, automatically centering and positioning the test block; (3) Only by controlling the position of the lifting mechanism can the automatic centering of the test block, the anti-splash during the test process and the lifting of the protective enclosure be realized; (4) The centering mechanism is arranged inside the protective enclosure and is driven by the lifting mechanism to move up and down with the protective enclosure. When the lifting mechanism is in the first position, there is a certain distance between the centering mechanism, the protective enclosure and the bearing support platform, which does not affect the cleaning of the top of the bearing support platform after the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is one of the schematic structural diagrams of the concrete strength detection device for road construction in the present invention.

[0020] Figure 2 FIG. 2 is another schematic structural diagram of the concrete strength detection device for road construction in the present invention.

[0021] Figure 3 FIG. 3 is yet another schematic structural diagram of the concrete strength detection device for road construction in the present invention.

[0022] Figure 4 FIG. 4 is a schematic structural diagram of the lifting mechanism and the centering mechanism in the present invention.

[0023] Figure 5 FIG. 5 is a schematic structural diagram of the cleaning mechanism and the bearing support platform in the present invention.

[0024] Figure 6 FIG. 6 is a schematic structural diagram of the bearing support platform in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully convey the scope of the present invention to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0026] The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different parts. Terms such as "comprising" or "including" mean that the elements before the term cover the elements listed after the term, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0027] As Figures 1 to 6As shown, a concrete strength detection device for road construction includes a pressure testing mechanism 1. The pressure testing mechanism 1 has a base 11. A bearing support platform 15 is fixedly arranged at the top of the base 11. Above the bearing support platform 15, a pressing plate 16 corresponding to the middle part thereof is arranged. Above the pressing plate 16, a downward pressing driving cylinder 13 for driving it to move up and down is arranged. The bearing support platform 15 is fixedly supported above the base 11 through bearing columns 17. A top frame 12 is fixedly supported above the base 11 through columns 14. A regular quadrilateral protective enclosure 2 is arranged in the middle above the bearing support platform 15. Lifting mechanisms 3 are symmetrically arranged above the protective enclosure 2. The lifting mechanisms 3 are fixedly installed above the protective enclosure 2. The lifting mechanisms 3 drive the protective enclosure 2 to move up and down. A centering mechanism 4 corresponding to the side surfaces of the test block is arranged inside the protective enclosure 2.

[0028] In the above embodiment, the regular quadrilateral protective enclosure 2 can form a continuous barrier around the test block, and can prevent the broken concrete from splashing around during the test, improving the test protection effect. When the lifting mechanism 3 is in the first position, the protective enclosure 2 is at the highest position. The gap between the protective enclosure 2 and the bearing support platform 15 can be used to place the test block on the top of the bearing support platform 15. When the test block is placed on the top of the bearing support platform 15, the lifting mechanism 3 drives the protective enclosure 2 to move down to its second position, surrounding the outside of the test block. The lifting mechanism 3 continues to move down to its third position. During the process of moving down to its third position, the centering mechanisms 4 around the protective enclosure 2 move synchronously towards the axis direction of the pressing plate 16, pushing the test block to be centered above the bearing support platform 15 and corresponding to the pressing plate 16, automatically centering and positioning the test block. After the test block is centered, the lifting mechanism 3 moves to its second position again, and the centering mechanism 4 moves away from the test block, and then the test can start. Only by controlling the position of the lifting mechanism 3 can the automatic centering of the test block, anti-splashing during the test process and the lifting of the protective enclosure 2 be realized. The centering mechanism 4 is arranged inside the protective enclosure 2 and is driven by the lifting mechanism 3 to move up and down with the protective enclosure 2. When the lifting mechanism 3 is in the first position, there is a certain distance between the centering mechanism 4 and the protective enclosure 2 and the bearing support platform 15, which does not affect the cleaning of the top of the bearing support platform 15 after the test. Specifically, the protective enclosure 2 is a square cylindrical structure.

[0029] As a specific implementation manner of the centering mechanism 4 in the above embodiment, such as Figure 4As shown, a lifting frame 8 corresponding to the protective fence 2 is arranged above the protective fence 2. The lifting mechanism 3 drives the lifting frame 8 to move up and down. The protective fence 2 is slidably connected to the lower part of the lifting frame 8 in the vertical direction. The centering mechanism 4 has centering push rods 41 corresponding to the sides of the test block. Upper connecting rods 42 and lower connecting rods 43 are hinged to both ends of the centering push rod 41. One end of the lower connecting rod 43 away from the centering push rod 41 is hinged to the inner bottom of the protective fence 2, and one end of the upper connecting rod 42 away from the centering push rod 41 is hinged to the inner side of the lifting frame 8. When the lifting mechanism 3 is in its second position, the protective fence 2 contacts the top of the bearing support platform 15. When the lifting mechanism 3 moves down to its third position, it drives the lifting frame 8 to move down. The downward movement of the upper end of the upper connecting rod 42 is driven by the downward movement of the lifting frame 8. The upper connecting rod 42 and the lower connecting rod 43 cooperate to push the centering push rod 41 to move in the axial direction of the pressing plate 16. The four centering push rods 41 around the test block move synchronously. The centering push rod 41 pushes the middle and lower parts of the test block to move to complete centering. Just when the centering is completed, the lifting mechanism 3 just moves to its third position. After the centering is completed, the lifting mechanism 3 moves up to its second position, driving the lifting frame 8 and the upper end of the upper connecting rod 42 to move up, and the centering push rod 41 moves away from the test block to avoid the centering push rod 41 affecting the test block during the test.

[0030] In some embodiments, reset sliding seats 46 are evenly arranged on the outer side of the top end of the protective fence 2. A sliding rod 44 is slidably arranged in the vertical direction inside the reset sliding seat 46. The upper end of the sliding rod 44 is fixedly connected to the bottom of the lifting frame 8. A limiting plate 47 is fixedly arranged at the lower end of the sliding rod 44. A reset spring 45 is sleeved on the outer side of the sliding rod 44 between the reset sliding seat 46 and the lifting frame 8. When the lifting mechanism 3 is in its first position, the limiting plate 47 supports the bottom of the reset sliding seat 46, and the protective fence 2 is lifted upward so that there is enough clearance between it and the bearing support platform 15 to place the test block. When the lifting mechanism 3 is in its second position, the reset spring 45 is just compressed by 0.5 - 2 cm. Through the elastic force of the reset spring 45, the bottom of the protective fence 2 is closely attached to the top of the bearing support platform 15. When the lifting mechanism 3 moves from its second position to its third position, the reset spring 45 is further compressed. During the process of the lifting mechanism 3 moving from its third position to its second position, the reset spring 45 gradually releases. The reset sliding seat 46 is continuously subjected to a downward elastic force in the states where the lifting mechanism 3 is in its second position and third position, so that the protective fence 2 is closely attached to the top of the bearing support platform 15.

[0031] As a specific implementation of the lifting mechanism 3 in the above embodiments, the lifting mechanism 3 has a parallel upper support plate 32 and a lower support plate 33. Two lifting guide rods 36 are symmetrically arranged between the upper support plate 32 and the lower support plate 33. A lifting support 31 is slidably arranged on the lifting guide rods 36. A lifting lead screw 35 is threadedly connected to the middle of the lifting support 31. The two ends of the lifting lead screw 35 are respectively rotatably connected to the upper support plate 32 and the lower support plate 33. An elevating drive motor 34 for driving the rotation of the lifting lead screw 35 is arranged on the upper support plate 32; the lifting support 31 is fixedly installed above the protective enclosure 2 through the enclosure support 21; in the lifting mechanism 3, the elevating drive motor 34 drives the lifting lead screw 35 to rotate. The threaded structure between the lifting lead screw 35 and the lifting support 31 drives the lifting lead screw 35 to move up and down. The lifting lead screw 35 drives the lower support plate 33 to move up and down. The lower support plate 33 is fixedly connected to the lifting frame 8, so as to drive the lifting frame 8 to move up and down; the first position, the second position and the third position of the lifting mechanism 3 mentioned in the above embodiments refer to the height positions where the lower support plate 33 in the lifting mechanism 3 is located; specifically, the bottom end of the enclosure support 21 is fixed on the profile support on the top of the base 11.

[0032] In some embodiments, in order to enable the device to automatically dump the test block residues generated after the test, as Figure 1 and 2 shown, a pressure-bearing table board 5 is slidably arranged on the top of the pressure-bearing support platform 15. A translation mechanism 6 for driving the pressure-bearing table board 5 to reciprocate is fixedly installed on one side of the base 11. The translation mechanism 6 is hinged to one side of the pressure-bearing table board 5; during the test, the test block is not directly placed on the top of the pressure-bearing support platform 15, but on the top of the pressure-bearing table board 5 on the pressure-bearing support platform 15; after one test is completed, the translation mechanism 6 drives the pressure-bearing table board 5 to slide on the top of the pressure-bearing support platform 15. When the pressure-bearing table board 5 slides outwards from the edge of the pressure-bearing support platform 15, due to the hinge connection between the translation mechanism 6 and the pressure-bearing table board 5, the pressure-bearing table board 5 flips downwards, so that the test block residues inside it slide out, realizing the automatic cleaning of the test block residues; after the test block slides out, the translation mechanism 6 drives the pressure-bearing table board 5 to reset, and the next test can be started.

[0033] As a specific implementation of the pressure-bearing table board 5, one side of the top of the pressure-bearing table board 5 facing away from the translation mechanism 6 is open, and retaining edges 51 are vertically and fixedly arranged on the other three sides. The retaining edges 51 can prevent the test block residues from slipping, and the opening is convenient for pouring out the test block residues.

[0034] In some embodiments, a high-rigidity chrome-molybdenum steel backing plate with a thickness of not less than 20 mm is arranged at the bottom of the pressure-bearing table board 5 to increase the elastic modulus of the pressure-bearing table board 5, reduce its deformation amount, and reduce the test error.

[0035] In some embodiments, as Figure 6As shown, at one end of the pressure-bearing support platform 15 away from the translation mechanism 6, a table board support 151 is fixedly arranged. The included angle α between the table board support 151 and the top surface of the pressure-bearing support platform 15 is an obtuse angle. The table board support 151 and the pressure-bearing support platform 15 are smoothly transitioned through an arc transition plate 152. The arc transition plate 152, the table board support 151 and the pressure-bearing support platform 15 are of an integral structure. Side plates 153 are fixedly arranged between the two ends of the table board support 151 and the pressure-bearing support platform 15. The side plates 153 play a supporting role between the two ends of the table board support 151 and the pressure-bearing support platform 15. The arc transition plate 152 plays a certain transitional role when the pressure-bearing table board 5 flips downward. The table board support 151 provides support after the pressure-bearing table board 5 flips. The pressure-bearing table board 5 stays for a period of time under the support of the table board support 151 until the test block residues on the pressure-bearing table board 5 slide off. Specifically, the included angle α between the table board support 151 and the top surface of the pressure-bearing support platform 15 is 145°.

[0036] In some embodiments, after the test block residues on the pressure-bearing table board 5 slide off, some particulate matters such as dust and concrete debris are likely to remain on the top of the pressure-bearing table board 5, causing stress concentration during the test and affecting the accuracy of the test. Therefore, as Figure 3 and 5 shown, a cleaning mechanism 7 is arranged above the table board support 151. The cleaning mechanism 7 has a sweeping roller 71 corresponding to the pressure-bearing table board 5. The two ends of the sweeping roller 71 are rotatably provided with sweeping roller shaft seats 72. A sweeping roller driving motor 73 for driving the sweeping roller 71 to rotate is arranged on the sweeping roller shaft seats 72. A lifting driving cylinder 74 for driving the sweeping roller 71 to move up and down is arranged on the side plate 153. After the test block residues on the pressure-bearing table board 5 slide off, the sweeping roller driving motor 73 drives the sweeping roller 71 to rotate, and the lifting driving cylinder 74 drives the sweeping roller 71 to move down to contact the top of the pressure-bearing table board 5. As the translation mechanism 6 drives the pressure-bearing table board 5 to reset, the pressure-bearing table board 5 moves relative to the sweeping roller 71, realizing the cleaning of the pressure-bearing table board 5 and sweeping away the particulate matters such as dust and concrete debris on the top of the pressure-bearing table board 5 to avoid affecting the accuracy of the test.

[0037] In some embodiments, a dust collection hood 75 corresponding to the sweeping roller 71 is fixedly erected on one side of the sweeping roller shaft seat 72 away from the protective enclosure 2. The side of the dust collection hood 75 close to the sweeping roller 71 and its bottom are open. A dust suction pipe 76 communicated with the dust collection hood 75 is arranged on the dust collection hood 75. When the device is in use, an external dust suction device is connected to the dust suction pipe 76. During the process of the sweeping roller 71 cleaning the pressure-bearing table board 5, the dust suction device runs synchronously to adsorb the swept dust and concrete debris and other particulate matters to avoid secondary pollution of the pressure-bearing table board 5.

[0038] In some embodiments, as Figure 2As shown, the translation mechanism 6 has a bracket 64 fixedly installed above one side of the base 11. A translation driving cylinder 61 is centrally arranged on the bracket 64. The end of the translation driving cylinder 61 is hinged to the end of the pressure-bearing platen 5. The end of the bracket 64 is supported on the top of the base 11 by profiles. The bracket 64 supports the translation driving cylinder 61. By controlling the expansion and contraction of the translation driving cylinder 61, the pressure-bearing platen 5 can be driven to move reciprocally.

[0039] In some embodiments, two translation guide rods 62 parallel to the axis of the translation driving cylinder 61 are symmetrically arranged on the bracket 64. The ends of the translation guide rods 62 are hinged to the ends of the pressure-bearing platen 5. A translation sliding seat 63 is slidably arranged on the outer side of the translation guide rods 62. The translation sliding seat 63 is fixedly arranged on the top of the bracket 64. By hinging the pressure-bearing platen 5 through the translation guide rods 62 slidably arranged on the top of the bracket 64, the stability of the reciprocal movement of the pressure-bearing platen 5 is improved.

[0040] So far, the embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0041] The above-described embodiments only represent some implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims

1. A concrete strength detection device for road construction, characterized in that: The pressure testing mechanism comprises a base, a pressure-bearing support is fixedly arranged on the top of the base, a pressure plate corresponding to the middle part of the pressure plate is arranged above the pressure-bearing support, and a downward pressure driving cylinder for driving the pressure plate to move up and down is arranged above the pressure plate; A regular quadrilateral protective enclosure is centrally arranged above the pressure-bearing support, and a lifting mechanism is symmetrically arranged above the protective enclosure. The lifting mechanism is fixedly mounted above the protective enclosure, and the lifting mechanism drives the protective enclosure to move up and down. Centering mechanisms corresponding to the side faces of the test block are arranged inside the protective enclosure.

2. The concrete strength detection device for road construction according to claim 1, characterized in that: A lifting frame corresponding to the protective enclosure is arranged above the protective enclosure, the lifting mechanism drives the lifting frame to move up and down, and the protective enclosure is slidably connected to the bottom of the lifting frame in the vertical direction; The centering mechanism has a centering push rod corresponding to the side of the test block, and both ends of the centering push rod are hinged with an upper connecting rod and a lower connecting rod. The end of the lower connecting rod facing away from the centering push rod is hinged to the inner bottom of the protective enclosure, and the end of the upper connecting rod facing away from the centering push rod is hinged to the inner side of the lifting frame.

3. The concrete strength detection device for road construction according to claim 2, wherein: Reset slides are evenly arranged on the outer side of the top end of the protective enclosure, and a sliding rod is slidably arranged inside the reset slide along the vertical direction. The upper end of the sliding rod is fixedly connected to the bottom of the lifting frame, and a limiting plate is fixedly arranged on the lower end of the sliding rod. A reset spring is sleeved on the outer side of the sliding rod between the reset slide and the lifting frame.

4. The concrete strength detection device for road construction according to claim 1, characterized in that: The lifting mechanism comprises an upper support plate and a lower support plate which are parallel to each other, two lifting guide rods are symmetrically arranged between the upper support plate and the lower support plate, a lifting support is slidably arranged on the lifting guide rod, a lifting screw is threadedly connected to the middle part of the lifting support, two ends of the lifting screw are rotatably connected to the upper support plate and the lower support plate respectively, and a lifting drive motor for driving the lifting screw to rotate is arranged on the upper support plate; The lifting support is fixedly mounted above the protective enclosure through an enclosure bracket.

5. The concrete strength detection device for road construction according to claim 1, characterized in that: A pressure-bearing platform is slidably provided on the top of the pressure-bearing support platform, and a translation mechanism for driving the pressure-bearing platform to reciprocate is fixedly mounted on one side of the base, and the translation mechanism is hinged to one side of the pressure-bearing platform.

6. The concrete strength detection device for road construction according to claim 5, wherein: A tabletop bracket is fixedly provided on the end of the pressure-bearing support platform away from the translation mechanism, the angle α between the tabletop bracket and the top surface of the pressure-bearing support platform is an obtuse angle, the tabletop bracket and the pressure-bearing support platform have a smooth transition via an arc transition plate, and side plates are fixedly provided between the two ends of the tabletop bracket and the pressure-bearing support platform.

7. The concrete strength detection device for road construction according to claim 6, characterized in that: A cleaning mechanism is arranged above the table bracket, and the cleaning mechanism has a sweeping roller corresponding to the pressure table, sweeping roller shaft seats are rotatably arranged at both ends of the sweeping roller, a sweeping roller driving motor for driving the sweeping roller to rotate is arranged on the sweeping roller shaft seat, and a lifting driving cylinder for driving the sweeping roller to move up and down is arranged on the side plate.

8. The concrete strength detection device for road construction according to claim 7, wherein: A dust collecting hood corresponding to the sweeping roller is fixedly mounted on the sweeping roller shaft seat on the side away from the protective enclosure. The side of the dust collecting hood close to the sweeping roller and the bottom thereof are open, and the dust collecting hood is provided with a dust suction pipe connected thereto.

9. The concrete strength detection device for road construction according to claim 5, wherein: The translation mechanism has a bracket fixedly installed above one side of the base. A translation driving cylinder is centrally arranged on the bracket, and the end of the translation driving cylinder is hinged to the pressure-bearing platen.

10. The concrete strength detection device for road construction according to claim 9, characterized in that: Two translation guide rods parallel to the axis of the translation driving cylinder are symmetrically arranged on the bracket. The ends of the translation guide rods are hinged to the pressure-bearing platen. A translation slide is slidably arranged outside the translation guide rods, and the translation slide is fixedly arranged on the top of the bracket.

Images