Pavement deflection detection device for road test

Abstract

The utility model provides a road surface deflection detection device for road test, which relates to the technical field of road surface deflection detection and comprises a detection head, one side of the detection head is provided with a safety sleeve shell for sleeving and protecting the detection head, the other end of a detection rod piece is movably connected with a measuring rod capable of being stored, and the measuring rod is provided with a clamping groove. And a limiting clamping block for clamping and fixing the measuring rod is fixedly mounted in the measuring rod. Compared with the prior art, the device has the advantages that one side of the detection head is provided with the safety sleeve shell for sleeving and accommodating the detection head, one end of the detection rod piece is provided with the notch for accommodating the measuring rod, and the limiting clamping block for positioning the measuring rod is arranged in the measuring rod, so that the positions of the detection head and the measuring rod can be adjusted according to requirements; under the condition that normal use of the deflection detection device is not affected, the detection head and the measuring rod can be stored and protected, the storage and transportation size of the deflection detection device is reduced, and the detection head and the measuring rod are prevented from being damaged in the storage and transportation process.

Description

TECHNICAL FIELD

[0001] The utility model relates to road surface deflection detection technical field, especially road surface deflection detection device for highway test. BACKGROUND

[0002] Road surface deflection value refers to the vertical deformation of road surface under the action of wheel load, which is an index reflecting the strength of road surface. The deflection detection of highway subgrade mainly detects the overall stiffness of each layer of road surface. The stiffness of subgrade is generally reflected by the modulus of resilience. If the deflection value is too large, the deformation is also larger, and each layer of road surface is prone to rupture. In the performance test of highway, the road surface deflection detection device is usually used to detect the deflection value of road surface.

[0003] However, the existing road surface deflection detection device is provided with a fixed measurement head at both ends and a measuring rod for extruding the detection instrument. The measurement head and the measuring rod have a small structure volume and are located on the outside of the detection device, and have weak pressure bearing capacity. During storage and transportation of the detection device, the measurement head and the measuring rod are prone to be extruded and broken, damaging the detection device. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims to provide a road surface deflection detection device for highway test to solve the problems mentioned in the background and overcome the deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, one embodiment of the utility model provides a road surface deflection detection device for highway test, which comprises a detection support for supporting, a detection rod member rotatingly connected in the detection support and working through the lever principle, a detection head rotatingly connected to one end of the detection rod member, a safety sleeve sheathing and protecting the detection head, a measuring rod movably connected to the other end of the detection rod member and capable of being stored, a limiting clamping block fixedly installed in the measuring rod and capable of clamping and fixing the measuring rod, a supporting jacking rod provided on one side of the measuring rod and capable of jacking out, and a fixed end cover fixedly installed at one end of the supporting jacking rod and capable of disassembling.

[0006] According to the above-mentioned any scheme, the bottom of the detection support is provided with three supporting pads in a triangular shape, and the top end of the detection support is provided with a rotating shaft for supporting the detection rod member.

[0007] The above-mentioned technical scheme is adopted: the detection support is the supporting foundation of the entire road surface deflection detection device. The triangular structure of the bottom of the detection support has high stability, can be stably placed under various road conditions, and ensures that the device does not shake or displace during detection. The rotating shaft provided at the top end of the detection support provides a reliable rotating fulcrum for the detection rod member, so that the detection rod member can be flexibly rotated during detection, and the effective application of the lever principle is realized.

[0008] Preferably, the safety sheath comprises a safety spring for supporting and a protective sleeve for covering the detection head, the safety spring is fixedly installed inside the detection rod, one end of the safety spring is fixedly installed with the protective sleeve which is movable at one end of the detection rod, and one end of the protective sleeve is provided with a receiving groove for accommodating the detection head.

[0009] The safety spring provides power for the protective sleeve through its elasticity, and in the storage or transportation process of the detection device, the safety spring is in a natural state or a slightly compressed state, and the protective sleeve tightly covers the detection head under the action of the safety spring, effectively preventing the detection head from being damaged by external extrusion, collision, etc. When detection is needed, the protective sleeve is manually rotated to overcome the elastic force of the safety spring, and the sleeve protection of the detection head is released, so that the detection head contacts the road surface for measurement, and the safety spring rebounds to push the protective sleeve to support the detection head, ensuring the stability of the detection head measurement. After the measurement is completed, the protective sleeve is pressed again to rotate and store the detection head, so that the protective sleeve covers and protects the detection head again, improving the safety of the detection head.

[0010] Preferably, the measuring rod is movably connected to the inside of the detection rod, the bottom of the measuring rod is provided with a fixing groove for accommodating the limiting block, and both ends of the measuring rod are provided with clamping grooves for clamping the limiting block.

[0011] The fixing groove at the bottom of the measuring rod and the clamping grooves at both ends cooperate with the limiting block to realize accurate positioning and stable fixing of the measuring rod. The fixing groove provides installation space for the limiting block, so that the limiting block can move in the measuring rod, and the clamping grooves and the clamping blocks interact to ensure that the measuring rod cannot move randomly in the storage state, ensuring the safety of the detection device during storage and transportation. When the measuring rod is needed, the clamping restriction of the limiting block on the measuring rod is released through the cooperation of other components (such as the ejection of the supporting top rod), and the measuring rod can be smoothly extended or retracted from the detection rod, realizing flexible operation of the measuring rod and improving the use convenience and functionality of the detection device.

[0012] Preferably, the limiting block comprises a limiting spring for providing support and a clamping block for clamping the measuring rod, the limiting spring is fixedly installed inside the measuring rod, and one end of the limiting spring is fixedly installed with the clamping block which is movable inside the measuring rod.

[0013] The technical scheme is as follows: the limiting spring is fixedly installed in the measuring rod and provides elastic support for the clamping block; in a natural state, the elastic force of the limiting spring makes the clamping block tightly clamped in the clamping groove of the measuring rod, thereby firmly fixing the measuring rod in the detection rod piece and preventing the measuring rod from being accidentally slid out and damaged; when the position of the measuring rod needs to be adjusted, the clamping block is pressed to compress the limiting spring, so that the clamping block is separated from the clamping groove, and the measuring rod can be freely moved to facilitate the adjustment of the position of the measuring rod.

[0014] Preferably, according to any one of the above schemes, the fixed end cover is threadedly connected to one end of the detection rod piece, and one end of the fixed end cover is provided with a manually-operated recess.

[0015] The technical scheme is as follows: the fixed end cover is tightly matched with one end of the detection rod piece through a threaded connection, and the manually-operated recess provided at one end of the fixed end cover provides a convenient operation mode for the user; when the fixed end cover needs to be disassembled or assembled, the fixed end cover is easily rotated to realize the separation or connection of the fixed end cover and the detection rod piece; when the internal components (such as the measuring rod and the supporting top rod) of the detection rod piece need to be maintained or replaced, the fixed end cover can be conveniently disassembled, which facilitates the operation and improves the maintenance convenience of the detection device.

[0016] Preferably, according to any one of the above schemes, the supporting top rod comprises a power-providing ejection spring and a push plate for pushing the measuring rod, the ejection spring is fixedly installed at the top end of the fixed end cover, and the top end of the ejection spring is fixedly installed with the push plate which moves in the detection rod piece.

[0017] The technical scheme is as follows: the elastic potential energy of the ejection spring provides a strong pushing force for the push plate; according to the requirement of use, the ejection spring releases the elastic potential energy to push the push plate to move upward in the detection rod piece; after the push plate contacts the measuring rod, the measuring rod is ejected from the detection rod piece, so that the measuring rod can be smoothly extended for detection operation.

[0018] Compared with the prior art, the detection device has the following advantages and beneficial effects:

[0019] 1. The safety sleeve is arranged on one side of the detection head to accommodate the detection head, a slot is arranged at one end of the detection rod piece to accommodate the measuring rod, and a limiting clamping block is arranged in the measuring rod to position the measuring rod; the position of the detection head and the measuring rod can be adjusted according to the requirement; the detection head and the measuring rod can be accommodated and protected without affecting the normal use of the deflection detection device; the volume of the deflection detection device in storage and transportation is reduced; the detection head and the measuring rod are prevented from being damaged during storage and transportation; and the safety of the deflection detection device in storage and transportation is improved.

[0020] 2. A detachable fixed end cap is provided on one side of the measuring rod, and a support rod is provided at the top of the fixed end cap to push the measuring rod. The measuring rod is pushed by the support rod, which makes it easy to move the stored measuring rod out and improves the convenience of using the measuring rod.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a first-view structural schematic diagram according to an embodiment of the present utility model;

[0024] Figure 2 This is a second-view structural schematic diagram according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the safety cover according to an embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of the testing rod according to an embodiment of the present invention;

[0027] Among them: 1-Detection support, 2-Detection rod, 3-Detection head, 4-Safety sleeve, 41-Safety spring, 42-Protective sleeve, 5-Measuring rod, 6-Limiting block, 61-Limiting spring, 62-Snap block, 7-Supporting rod, 71-Ejection spring, 72-Push plate, 8-Fixed end cap, 9-Slot. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0029] like Figures 1-4 As shown in the figure, a road surface deflection testing device for highway testing according to an embodiment of the present invention includes a testing support 1 for support, a testing rod 2 that works by lever principle is rotatably connected inside the testing support 1, a testing head 3 is rotatably connected to one end of the testing rod 2, a safety sleeve 4 is provided on one side of the testing head 3 for protection, a measuring rod 5 that can be stored is movably connected to the other end of the testing rod 2, a limiting block 6 for locking and fixing is fixedly installed inside the measuring rod 5, a support rod 7 for pushing out is provided on one side of the measuring rod 5, and a fixed end cap 8 for detaching and reassembling is fixedly installed on one end of the support rod 7.

[0030] Preferably, the bottom of the detection support 1 is triangularly arranged with three supporting pads, and the top end of the detection support 1 is arranged with a rotating shaft for supporting the detection rod 2.

[0031] The detection support 1 is used as the supporting base of the entire road deflection detection device, the triangular structure of the bottom of the detection support 1 has high stability, can be stably placed under various road conditions, ensures that the device does not shake or displace during detection, and the rotating shaft arranged at the top end of the detection support 1 provides a reliable rotating fulcrum for the detection rod 2, so that the detection rod 2 can be flexibly rotated during detection, and the effective application of the lever principle is realized.

[0032] Preferably, the safety shell 4 includes a safety spring 41 for supporting and a protective sleeve 42 for covering the detection head 3, the safety spring 41 is fixedly installed in the inside of the detection rod 2, one end of the safety spring 41 is fixedly installed with the protective sleeve 42 movably arranged at one end of the detection rod 2, and one end of the protective sleeve 42 is arranged with a receiving groove for accommodating the detection head 3.

[0033] The safety spring 41 provides power for the protective sleeve 42 through its elasticity, and in the storage or transportation process of the detection device, the safety spring 41 is in a natural state or a slightly compressed state, and the protective sleeve 42 tightly covers the detection head 3 under the action of the safety spring 41, effectively preventing the detection head 3 from being damaged by external extrusion, collision, etc. When detection is needed, the protective sleeve 42 is manually rotated to overcome the elastic force of the safety spring 41 and release the sleeving protection of the detection head 3, so that the detection head 3 can contact the road surface for measurement, and the protective sleeve 42 is loosened, the safety spring 41 rebounds to push the protective sleeve 42 to support the detection head 3, ensuring the stability of the measurement of the detection head 3, and after the measurement is completed, the protective sleeve 42 is pressed again to rotate and store the detection head 3, so that the protective sleeve 42 covers and protects the detection head 3 again, improving the safety of the detection head 3.

[0034] Preferably, the measurement rod 5 is movably connected to the inside of the detection rod 2, the bottom of the measurement rod 5 is arranged with a fixing groove for accommodating the limiting block 6, and the two ends of the measurement rod 5 are arranged with a clamping groove 9 for clamping the limiting block 6.

[0035] The technical scheme is adopted: the fixing groove at the bottom of the measuring rod 5 and the clamping groove 9 at both ends cooperate with the limiting clamping block 6 to realize accurate positioning and stable fixing of the measuring rod 5, the fixing groove provides an installation space for the limiting clamping block 6, so that the limiting clamping block 6 can move on the measuring rod 5, and the clamping groove 9 interacts with the clamping block 62 to ensure that the measuring rod 5 cannot be moved at will in the storage state, ensuring the safety of the detection device during storage and transportation. When the measuring rod 5 needs to be used, the clamping restriction of the limiting clamping block 6 on the measuring rod 5 is released through the cooperation of other components (such as the ejection of the supporting top rod 7), and the measuring rod 5 can be smoothly extended or retracted from the detection rod 2, realizing flexible operation of the measuring rod 5 and improving the use convenience and functionality of the detection device.

[0036] According to any of the above schemes, preferably, the limiting clamping block 6 includes a limiting spring 61 providing support and a clamping block 62 clamping the measuring rod 5, the limiting spring 61 is fixedly installed in the interior of the measuring rod 5, and one end of the limiting spring 61 is fixedly installed with the clamping block 62 moving in the interior of the measuring rod 5.

[0037] The technical scheme is adopted: the limiting spring 61 is fixedly installed in the interior of the measuring rod 5 to provide elastic support for the clamping block 62, in a natural state, the elastic force of the limiting spring 61 makes the clamping block 62 tightly clamped in the clamping groove 9 of the measuring rod 5, thereby firmly fixing the measuring rod 5 in the detection rod 2, preventing the measuring rod 5 from accidentally sliding out and causing damage. When the position of the measuring rod 5 needs to be adjusted, the clamping block 52 is pressed to compress the limiting spring 61, so that the clamping block 62 is separated from the clamping groove 9, and at this time the measuring rod 5 can be freely moved, facilitating the adjustment of the position of the measuring rod 5.

[0038] According to any of the above schemes, preferably, the fixed end cover 8 is threadedly connected to one end of the detection rod 2, and one end of the fixed end cover 8 is provided with a manually operated recess.

[0039] The technical scheme is adopted: the fixed end cover 8 is tightly matched with one end of the detection rod 2 through a threaded connection, and the manually operated recess provided at one end of the fixed end cover 8 provides a convenient operation mode for the user, and when the fixed end cover 8 needs to be disassembled or installed, the fixed end cover 8 is easily rotated to realize the separation or connection of the fixed end cover 8 and the detection rod 2, and when the internal components (such as the measuring rod 5, the supporting top rod 7, etc.) of the detection rod 2 need to be maintained or replaced, the fixed end cover 8 can be conveniently disassembled, facilitating operation and improving the maintenance convenience of the detection device.

[0040] According to any of the above schemes, preferably, the supporting top rod 7 includes a ejection spring 71 providing power and a push plate 72 pushing the measuring rod 5, the ejection spring 71 is fixedly installed at the top end of the fixed end cover 8, and the top end of the ejection spring 71 is fixedly installed with the push plate 72 moving in the interior of the detection rod 2.

[0041] Adopting the technical scheme, the elastic potential energy of the ejection spring 71 provides strong pushing force for the push plate 72, the ejection spring 71 releases the elastic potential energy according to the requirement of use, the push plate 72 is pushed to move upwards in the detection rod piece 2, after the push plate 72 contacts with the measuring rod 5, the measuring rod 5 is ejected from the detection rod piece 2, so that the measuring rod 5 can be smoothly extended to perform detection operation.

[0042] The working principle of the road surface deflection detection device for highway test is as follows:

[0043] During detection, the detection support 1 is placed on the road surface, and the three supporting pads ensure stability. The detection rod piece 2 is connected with the detection support 1 through a rotating shaft, the safety sleeve shell 4 is operated, the safety spring 41 is compressed, the detection head 3 is exposed and placed on the road surface measuring point. When the road surface deflects, the detection head 3 is stressed, and drives the detection rod piece 2 to rotate around the rotating shaft. In the initial state, the measuring rod 5 is fixed in the detection rod piece 2 by the limiting clamping block 6. When the measuring rod 5 is used, the clamping block 62 is pressed, the push plate 72 is pushed by the ejection spring 71, the measuring rod 5 is ejected, the measurement is completed, and the measuring rod 5 is stored back to the detection rod piece 2 by reverse operation, and the safety sleeve shell 4 protects the detection head 3.

[0044] Compared with the prior art, the utility model has the following beneficial effects relative to the prior art:

[0045] 1、In one side of detection head 3 set its sleeve receipt of safety sleeve shell 4, while in the detection rod piece 2 one end is set up and receives the slot of measuring rod 5, and in the inside of measuring rod 5 set up and position its limiting clamping block 6, can according to the demand to the position of detection head 3 and measuring rod 5 adjust, in the case where not influence deflection detection device normal use can the detection head 3 and measuring rod 5 are received and protected, reduce the volume of deflection detection device storage and transportation, avoid detection head 3 and measuring rod 5 in the process of storage and transportation are damaged, improve the safety of deflection detection device storage and transportation.

[0046] 2、In the side of measuring rod 5 set up and can be disassembled fixed end cover 8, and in fixed end cover 8 top set up and push measuring rod 5 supporting top rod 7, utilize supporting top rod 7 push measuring rod 5, facilitate the measuring rod 5 received and removed, improve the convenience of measuring rod 5 use.

Claims

1. A road test pavement deflection detection device, comprising a detection support (1) for supporting, a detection rod (2) for working through the lever principle is rotatably connected inside the detection support (1), characterized in that: One end of the detection rod (2) is rotatably connected with a detection head (3), one side of the detection head (3) is provided with a safety sheath (4) for sleeving protection, the other end of the detection rod (2) is movably connected with a measuring rod (5) which can be stored, the inside of the measuring rod (5) is fixedly installed with a limiting clamping block (6) for clamping fixation, one side of the measuring rod (5) is provided with a supporting ejection rod (7) for ejecting, one end of the supporting ejection rod (7) is fixedly installed with a fixed end cover (8) for disassembly and assembly.

2. A road test pavement deflection detection device as claimed in claim 1, characterized in that: The bottom of the detection support (1) is provided with three supporting pads in a triangular shape, and the top end of the detection support (1) is provided with a rotating shaft for supporting the detection rod (2).

3. A device for detecting deflection of a road surface for road testing according to claim 2, wherein: The safety sheath (4) comprises a safety spring (41) for supporting and a protective sleeve (42) for covering the detection head (3), the safety spring (41) is fixedly installed in the inside of the detection rod (2), one end of the safety spring (41) is fixedly installed with the protective sleeve (42) which is movable at one end of the detection rod (2), and one end of the protective sleeve (42) is provided with a storage groove for accommodating the detection head (3).

4. A device for detecting deflection of a road surface for road testing according to claim 3, wherein: The measuring rod (5) is movably connected to the inside of the detection rod (2), the bottom of the measuring rod (5) is provided with a fixed groove for accommodating the limiting clamping block (6), and both ends of the measuring rod (5) are provided with clamping grooves (9) for clamping the limiting clamping block (6).

5. A device for detecting deflection of a road surface for road testing according to claim 4, wherein: The limiting clamping block (6) comprises a limiting spring (61) for providing support and a clamping block (62) for clamping the measuring rod (5), the limiting spring (61) is fixedly installed in the inside of the measuring rod (5), and one end of the limiting spring (61) is fixedly installed with the clamping block (62) which is movable in the inside of the measuring rod (5).

6. A device for detecting deflection of a road surface for road testing according to claim 5, wherein: The fixed end cover (8) is threadedly connected to one end of the detection rod (2), and one end of the fixed end cover (8) is provided with a recess for manual operation.

7. A device for detecting deflection of a road surface for road testing according to claim 6, wherein: The supporting ejection rod (7) comprises an ejection spring (71) for providing power and a push plate (72) for pushing the measuring rod (5), the ejection spring (71) is fixedly installed at the top end of the fixed end cover (8), and the top end of the ejection spring (71) is fixedly installed with the push plate (72) which is movable in the inside of the detection rod (2).

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