Road surface strength detection device for road test

Abstract

The utility model discloses a pavement strength detection device for a road test. The pavement strength detection device comprises a motor, a threaded rod, a guide rod, a first wedge-shaped block, a second wedge-shaped block and a bracket, according to the road surface strength detection device for the road test, a threaded rod is driven to rotate through a motor, so that a movable seat is driven to slide up and down on a guide rod, a first wedge-shaped block can be lifted in cooperation with a bracket, so that a drop hammer of a drop hammer deflectometer is lifted, and meanwhile, a second wedge-shaped block is matched with the first wedge-shaped block to form extrusion; when the movable seat drives the bracket to descend, the first wedge-shaped block can be extruded to descend to the lower part of the first wedge-shaped block, so that the first wedge-shaped block is shrunk towards the inner part of the shrinking cavity, the first wedge-shaped block is separated from the bracket, and a drop hammer of the drop hammer deflectometer falls off for detection; according to the device, the drop hammer of the drop hammer deflectometer can be lifted, loosened and operated again only by operating the motor, manual repeated stooping operation is not needed, and the device is more labor-saving and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of highway detection, in particular to a road surface strength detection device for highway tests. Background Art

[0002] Highways are an indispensable part of people's travel. With the improvement of people's living standards, the utilization rate of transportation tools has increased, and the load on highways has also increased. In highway construction, in order to ensure that the highway is not easily damaged after being put into use, a road strength detection device is needed to perform pressure detection on unused roads to ensure that the highway meets the use standards and ensure driving safety. Deflection meters are usually used for detection to measure the rebound deflection value of the road surface in order to evaluate the overall strength of the road surface.

[0003] Most of the existing deflectometers use a drop-weight deflectometer to detect the strength of the road surface. The road surface strength is detected by the free fall of a weight. During operation, in order to ensure the accuracy of the detection, it is often necessary to perform repeated operations at the same position to obtain an average value. However, during the reciprocating operation, the operator is required to constantly bend over to lift the weight. The reciprocating work can easily cause waist pain in the operator, thereby increasing the physical burden on the operator. Utility Model Content

[0004] The purpose of the utility model is to provide a road surface strength detection device for highway testing to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A road surface strength detection device for highway tests comprises a frame, a drop weight deflectometer is arranged on the inner side of the frame, a contraction cavity is arranged on four sides of the drop weight of the drop weight deflectometer, a spring is arranged in the contraction cavity, a first wedge block is fixedly connected to the end of the spring, the first wedge block is inserted into the contraction cavity and is slidably connected to the contraction cavity, a second wedge block adapted to the first wedge block is arranged above the first wedge block, a bracket adapted to the first wedge block is arranged on the outer side of the first wedge block, the bracket and the second wedge block are staggered, each corresponding to half of the first wedge block, a guide bar is slidably penetrated on the second wedge block, and a guide bar for the guide bar to penetrate and slide is provided on the second wedge block. The movable seat has a rectangular hole for movement, the bracket is fixedly connected to the movable seat, the movable seat is symmetrically slidably penetrated by a guide rod, the movable seat is provided with a round hole for the guide rod to penetrate and slide, the bottom ends of the guide rod and the guide bar are jointly fixedly connected with a U-shaped frame, the U-shaped frame is fixedly connected to the frame, the top ends of the guide rod and the guide bar are jointly fixedly connected with a cross bar, the cross bar is fixedly connected to the frame, a motor is fixedly installed on the cross bar, the middle part of the movable seat is threadedly connected with a threaded rod, the movable seat is provided with a threaded hole for threaded connection of the threaded rod, the two ends of the threaded rod are respectively rotatably installed on the U-shaped frame and the cross bar, and the output end of the motor penetrates the cross bar and is fixedly connected to the threaded rod.

[0007] As a further solution of the utility model: the guide bar is provided with scale lines, the second wedge block is threadedly connected with two threaded knobs, one end of the threaded knob is tightly pressed against the guide bar, and the second wedge block is provided with a threaded hole for threaded connection of the threaded knob.

[0008] As a further solution of the utility model: casters are fixedly installed at the four corners of the bottom surface of the frame, the casters are universal brake wheels, and a handle is fixedly installed on the top side wall of the frame.

[0009] As a further solution of the utility model: a mobile power source is fixedly installed on the top surface of the frame, and a switch is fixedly installed on the horizontal bar.

[0010] As a further solution of the utility model: the bottom of the frame is fixedly connected with a first guide sleeve which is slidably mounted on the outside of the bottom plate of the drop weight deflectometer, the top of the frame is fixedly connected with a second guide sleeve which is slidably mounted on the outside of the guide rod of the drop weight deflectometer, the side wall of the second guide sleeve is threadedly connected with a locking bolt, the second guide sleeve is provided with a threaded hole for threaded connection of the locking bolt, the locking bolt is tightly pressed against the side wall of the guide rod of the drop weight deflectometer, and a lifting handle is fixedly installed on the top of the guide rod of the drop weight deflectometer.

[0011] As a further solution of the utility model: a first guide bar is provided on the inner circumference of the second guide sleeve, a guide groove is opened on the outer circumference of the guide rod of the drop weight deflectometer, a second guide bar is provided on the inner circumference of the drop weight of the drop weight deflectometer, and the first guide bar and the second guide bar are inserted into the guide groove and are slidably connected with the guide groove.

[0012] As a further solution of the utility model: the motor is electrically connected to the switch through a wire, and the switch is electrically connected to the mobile power supply through a wire.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model drives the threaded rod to rotate by a motor, thereby driving the movable seat to slide up and down on the guide rod, and cooperates with the bracket to lift the first wedge block, so that the drop weight of the drop weight deflectometer is lifted. At the same time, the second wedge block cooperates with the first wedge block to form extrusion, so that the first wedge block shrinks into the contraction cavity, so that the first wedge block is separated from the bracket, so that the drop weight of the drop weight deflectometer falls for detection. At the same time, when the movable seat drives the bracket to descend, it can squeeze the first wedge block to drop below the first wedge block. Therefore, the device can realize the lifting, loosening and re-operation of the drop weight of the drop weight deflectometer only by operating the motor, without the need for manual repeated bending operation, which is more labor-saving and convenient.

[0015] The utility model can lock the second wedge block on the guide bar through the threaded knob, and the height of the second wedge block can be controlled by cooperating with the scale knob, so as to be suitable for use when detecting different heights.

[0016] The utility model lifts the whole drop weight deflectometer by means of the lifting handle, and cooperates with the second guide sleeve and the locking bolt to lock the guide rod of the drop weight deflectometer, so that the drop weight deflectometer is suspended in the frame, thereby the drop weight deflectometer can be conveniently transferred and carried by means of casters and the handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic structural diagram of a road surface strength detection device for highway testing.

[0018] Figure 2 This is an enlarged view of A in a road surface strength detection device for highway testing.

[0019] Figure 3 This is an enlarged view of B in a road surface strength detection device for highway testing.

[0020] Figure 4 The present invention is a cross-sectional view showing the support seat of a road surface strength testing device for highway testing.

[0021] Figure 5 This is an enlarged view of the second wedge block in a road surface strength detection device for highway testing.

[0022] In the figure: 1. frame; 2. drop weight deflectometer; 3. contraction chamber; 4. spring; 5. first wedge block; 6. second wedge block; 7. bracket; 8. guide bar; 9. movable seat; 10. guide rod; 11. U-shaped frame; 12. horizontal bar; 13. motor; 14. threaded rod; 15. scale line; 16. threaded knob; 17. caster; 18. handle; 19. mobile power supply; 20. switch; 21. first guide sleeve; 22. second guide sleeve; 23. locking bolt; 24. lifting handle; 25. first guide bar; 26. guide groove; 27. second guide bar. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 5 In the embodiment of the utility model, a road surface strength detection device for highway test includes a frame 1, a drop weight deflectometer 2 is provided on the inner side of the frame 1, a contraction cavity 3 is provided on the four sides of the drop weight of the drop weight deflectometer 2, a spring 4 is fixedly connected in the contraction cavity 3, a first wedge block 5 is fixedly connected to the end of the spring 4, the first wedge block 5 is inserted into the contraction cavity 3 and slidably connected to the contraction cavity 3, a second wedge block 6 adapted to the first wedge block 5 is provided above the first wedge block 5, a bracket 7 adapted to the first wedge block 5 is provided on the outer side of the first wedge block 5, the bracket 7 and the second wedge block 6 are staggered, each corresponding to half of the first wedge block 5, a guide bar 8 is slidably penetrated on the second wedge block 6, and a rectangular hole for the guide bar 8 to penetrate and slide is opened on the second wedge block 6, and the bracket 7 is provided on the second wedge block 6. The seat 7 is fixedly connected to the movable seat 9, and a guide rod 10 is symmetrically slidably penetrated on the movable seat 9. The movable seat 9 is provided with a round hole for the guide rod 10 to penetrate and slide. The bottom ends of the guide rod 10 and the guide bar 8 are jointly fixedly connected with a U-shaped frame 11, and the U-shaped frame 11 is fixedly connected to the frame 1. The tops of the guide rod 10 and the guide bar 8 are jointly fixedly connected with a cross bar 12, and the cross bar 12 is fixedly connected to the frame 1. A motor 13 is fixedly installed on the cross bar 12. A threaded rod 14 is threadedly penetrated and connected in the middle part of the movable seat 9. A threaded hole for threaded connection of the threaded rod 14 is provided on the movable seat 9. The two ends of the threaded rod 14 are rotatably installed on the U-shaped frame 11 and the cross bar 12 respectively, and the output end of the motor 13 penetrates the cross bar 12 and is fixedly connected to the threaded rod 14.

[0025] The threaded rod 14 is driven to rotate by the motor 13, thereby driving the movable seat 9 to slide up and down on the guide rod 10, and the first wedge block 5 can be lifted in cooperation with the bracket 7, so that the drop weight of the drop weight deflectometer 2 is lifted. At the same time, the second wedge block 6 cooperates with the first wedge block 5 to form extrusion, so that the first wedge block 5 shrinks into the contraction cavity 3, so that the first wedge block 5 is separated from the bracket 7, so that the drop weight of the drop weight deflectometer 2 falls for detection. At the same time, when the movable seat 9 drives the bracket 7 to descend, it can squeeze the first wedge block 5 to drop below the first wedge block 5, so that the device only needs to operate the motor 13 to realize the lifting, release and re-operation of the drop weight of the drop weight deflectometer 2, without the need for manual repeated bending operation, which is more labor-saving and convenient.

[0026] The guide bar 8 is provided with scale lines 15 , and the second wedge block 6 is threadedly connected with two threaded knobs 16 , one end of the threaded knob 16 is tightly pressed against the guide bar 8 , and the second wedge block 6 is provided with a threaded hole for threaded connection of the threaded knob 16 .

[0027] The second wedge block 6 can be locked on the guide bar 8 by means of the threaded knob 16, and the height of the second wedge block 6 can be controlled by means of the graduated knob 15, so as to be suitable for use in detections at different heights.

[0028] Casters 17 are fixedly mounted at the four corners of the bottom surface of the frame 1 . The casters 17 are universal brake wheels. A handle 18 is fixedly mounted on the top side wall of the frame 1 .

[0029] A mobile power source 19 is fixedly mounted on the top surface of the frame 1 , and a switch 20 is fixedly mounted on the horizontal bar 12 .

[0030] The bottom of the frame 1 is fixedly connected to a first guide sleeve 21 which is slidably mounted on the outside of the bottom plate of the drop weight deflectometer 2, and the top of the frame 1 is fixedly connected to a second guide sleeve 22 which is slidably mounted on the outside of the guide rod of the drop weight deflectometer 2. The side wall of the second guide sleeve 22 is threadedly connected to a locking bolt 23, and the second guide sleeve 22 is provided with a threaded hole for threading the locking bolt 23. The locking bolt 23 is tightly pressed against the side wall of the guide rod of the drop weight deflectometer 2, and a lifting handle 24 is fixedly installed on the top of the guide rod of the drop weight deflectometer 2.

[0031] The entire drop weight deflectometer 2 is lifted up by the lifting handle 24, and the guide rod of the drop weight deflectometer 2 is locked by cooperating with the second guide sleeve 22 and the locking bolt 23, so that the drop weight deflectometer 2 is suspended in the frame 1, so that the drop weight deflectometer 2 can be conveniently transferred and carried by cooperating with the casters 17 and the handle 18.

[0032] A first guide bar 25 is provided on the inner circumference of the second guide sleeve 22, a guide groove 26 is provided on the outer circumference of the guide rod of the drop weight deflectometer 2, and a second guide bar 27 is provided on the inner circumference of the drop weight of the drop weight deflectometer 2. The first guide bar 25 and the second guide bar 27 are inserted into the guide groove 26 and are slidably connected to the guide groove 26.

[0033] The up and down movement of the drop weight deflectometer 2 is guided by the arrangement of the first guide sleeve 21 and the second guide sleeve 22. At the same time, the axial rotation of the drop weight deflectometer 2 is guided by the cooperation of the first guide bar 25 and the guide groove 26. The axial rotation of the drop weight and the guide rod is guided by the second guide bar 27 and the guide groove 26, thereby controlling the correspondence between the first wedge block 5 and the second wedge block 6 and the bracket 7.

[0034] The motor 13 is electrically connected to the switch 20 via a wire, and the switch 20 is electrically connected to the mobile power source 19 via a wire.

[0035] The working principle of the utility model is:

[0036] When in use, the device is moved by the caster 17 in cooperation with the handle 18, so that the drop weight deflectometer 2 is located at the detection position. At this time, the caster 17 is self-locked, and the locking bolt 23 is loosened at the same time, so that the drop weight deflectometer 2 falls on the road surface. At this time, the motor 13 is controlled to reverse through the switch 20, and the threaded rod 14 is driven to rotate by the motor 13, thereby driving the movable seat 9 to slide up and down on the guide rod 10, and the bracket 7 squeezes the first wedge block 5, so that the first wedge block 5 squeezes the spring 4 to shrink into the shrinkage cavity 3, so that the bracket 7 can move to the bottom of the first wedge block 5. At the same time, the motor 13 is controlled to rotate forward through the switch 20, and the threaded rod 14 is driven to rotate through the motor 13, thereby driving the movable seat 9 to slide up and down on the guide rod 10, and the first wedge block 5 can be lifted up in cooperation with the bracket 7, so that the drop weight of the drop weight deflectometer 2 is lifted, and at the same time, the second wedge block 6 cooperates with the first wedge block 5 to form extrusion, so that the first wedge block 5 shrinks into the contraction cavity 3, so that the first wedge block 5 is separated from the bracket 7, so that the drop weight of the drop weight deflectometer 2 falls, and detection is carried out. The motor 13 is repeatedly controlled to rotate forward and reverse through the switch 20, so as to realize multiple detections.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A road surface strength detection device for highway testing, comprising a frame (1), characterized in that: A drop weight deflectometer (2) is provided on the inner side of the frame (1), and a contraction cavity (3) is provided on all four sides of the drop weight of the drop weight deflectometer (2). A spring (4) is fixedly connected to the contraction cavity (3), and a first wedge block (5) is fixedly connected to the end of the spring (4). The first wedge block (5) is inserted into the contraction cavity (3) and is slidably connected to the contraction cavity (3). A second wedge block (6) matching the first wedge block (5) is provided above the first wedge block (5), and a bracket (7) matching the first wedge block (5) is provided on the outer side of the first wedge block (5). A guide strip (8) is slidably penetrated through the second wedge block (6), and the bracket (7) is fixedly connected to a movable seat (9), and a symmetrical sliding plate (8) is provided on the movable seat (9). A guide rod (10) is inserted through the movable seat (9); the bottom ends of the guide rod (10) and the guide bar (8) are fixedly connected to a U-shaped frame (11); the U-shaped frame (11) is fixedly connected to the frame (1); the top ends of the guide rod (10) and the guide bar (8) are fixedly connected to a cross bar (12); the cross bar (12) is fixedly connected to the frame (1); a motor (13) is fixedly mounted on the cross bar (12); a threaded rod (14) is threadedly inserted through the middle of the movable seat (9); the two ends of the threaded rod (14) are rotatably mounted on the U-shaped frame (11) and the cross bar (12) respectively; and the output end of the motor (13) passes through the cross bar (12) and is fixedly connected to the threaded rod (14).

2. A road surface strength detection device for highway testing according to claim 1, characterized in that: The guide bar (8) is provided with a scale line (15), and the second wedge block (6) is threadedly connected with two threaded knobs (16), and one end of the threaded knob (16) is tightly pressed against the guide bar (8).

3. A road surface strength detection device for highway testing according to claim 1, characterized in that: Casters (17) are fixedly mounted at the four corners of the bottom surface of the frame (1), and a handle (18) is fixedly mounted on the top side wall of the frame (1).

4. A road surface strength detection device for highway testing according to claim 1, characterized in that: A mobile power source (19) is fixedly mounted on the top surface of the frame (1), and a switch (20) is fixedly mounted on the horizontal bar (12).

5. A road surface strength detection device for highway testing according to claim 1, characterized in that: The bottom of the frame (1) is fixedly connected to a first guide sleeve (21) which is slidably mounted on the outside of the bottom plate of the drop weight deflectometer (2); the top of the frame (1) is fixedly connected to a second guide sleeve (22) which is slidably mounted on the outside of the guide rod of the drop weight deflectometer (2); a locking bolt (23) is threadedly connected to the side wall of the second guide sleeve (22); the locking bolt (23) is tightly pressed against the side wall of the guide rod of the drop weight deflectometer (2); and a lifting handle (24) is fixedly mounted on the top of the guide rod of the drop weight deflectometer (2).

6. A road surface strength detection device for highway testing according to claim 5, characterized in that: A first guide bar (25) is provided on the inner circumference of the second guide sleeve (22), a guide groove (26) is provided on the outer circumference of the guide rod of the drop weight deflectometer (2), a second guide bar (27) is provided on the inner circumference of the drop weight of the drop weight deflectometer (2), and the first guide bar (25) and the second guide bar (27) are inserted into the guide groove (26) and are slidably connected to the guide groove (26).

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