Road engineering pavement rebound testing device

Abstract

The utility model discloses a highway engineering pavement rebound testing device which comprises a base, vertical rods symmetrically arranged on the two sides of the top end of the base, first sliding sleeves slidably connected to the outer sides of the vertical rods in a sleeved mode, fixing rods fixedly connected to the outer sides of the first sliding sleeves, fixing rings fixedly connected to one ends of the fixing rods, and annular electromagnets fixedly installed at the bottoms of the fixing rings. The drop hammer instrument has the following advantages that the electric telescopic rod can be lifted to enable the lock hole to be in butt joint with the insertion rod, the drop hammer instrument can be rapidly fixed to the second sliding sleeve, and the drop hammer instrument is convenient to use. An annular electromagnet is driven by an electric telescopic rod to descend so as to magnetically adsorb a drop hammer instrument body, so that a worker does not need to manually pick up the drop hammer instrument body, pull an insertion rod outwards to be separated from a lock hole, and then move the electric telescopic rod in a second sliding sleeve downwards, so that the occupied space can be reduced, and the storage box is convenient to move.

Description

TECHNICAL FIELD

[0001] The utility model relates to road surface detection equipment technical field, concretely relates to highway engineering road surface rebound testing device. BACKGROUND

[0002] Rebound deflection refers to the vertical deformation of subgrade or pavement under the action of specified load, and the part of deformation that can be recovered after unloading, the rebound deflection value of pavement, generally the greater the rebound deflection value, the greater the plastic deformation of pavement structure (poor rigidity), and the poorer the fatigue resistance performance, which is difficult to withstand heavy traffic, on the contrary, the pavement structure has good fatigue resistance performance. Chinese patent CN217212028U discloses a kind of detection equipment of highway pavement rebound deflection value, the bottom of the chassis frame is fixedly connected with locking universal wheel at four corners, and the upper side of the chassis frame is fixedly connected with vertically arranged concave frame shell, lifting adjusting mechanism is arranged in the concave frame shell, and the opposite two sides of the concave frame shell are provided with sliding port, the two ends of the lifting adjusting mechanism are respectively penetrated through two sliding ports and fixedly connected with lifting plate, and the lower side of the lifting plate is fixedly connected with electromagnetic block.In the utility model, by setting lifting adjusting mechanism, electromagnetic block and magnet plate, electromagnetic block generates magnetic attraction force when electrified, so that electromagnetic block and magnet plate are adsorbed and fixed, the fixation of drop hammer block is realized, lifting adjusting mechanism realizes the upward movement of drop hammer block, adjustment is more convenient, manpower is saved, detection efficiency is improved, setting limit ring plate can prevent drop hammer block from running around, improve safety, and facilitate recovery.

[0003] The above prior art has the following disadvantages: in the prior art, when the drop hammer block freely falls, the rebound performance of the pavement needs to be tested multiple times, and personnel need to manually pick up the falling drop hammer block repeatedly, which is time-consuming and labor-intensive. Therefore, the highway engineering pavement rebound testing device is provided to solve the above problems. UTILITY MODEL CONTENTS

[0004] To solve the problems in the above background art, the technical solution adopted by the utility model to solve the technical problems is: a highway engineering pavement rebound testing device, which comprises: a base, the base top end is symmetrically provided with a stand on both sides, a first sliding sleeve is slidably sleeved outside the stand, a fixed rod is fixedly connected outside the first sliding sleeve, a fixed ring is fixedly connected at one end of the fixed rod, a ring-shaped electromagnet is fixedly installed at the bottom of the fixed ring, a drop hammer instrument body is magnetically attracted and connected at the bottom of the ring-shaped electromagnet, a second sliding sleeve is fixedly connected at one side of the top end of the stand, and an electric telescopic rod is slidably sleeved outside the second sliding sleeve.

[0005] As a preferred technical solution of the utility model, a guide rod is connected to the middle of the top end of the drop hammer instrument body, a limiting frame is fixedly connected outside the second sliding sleeve, a plug rod is slidably connected inside the limiting frame, and a spring is sleeved at one end of the plug rod inside the limiting frame.

[0006] As a preferred technical scheme of the utility model, the electric telescopic rod is provided with a lock hole opposite to one end of the plug rod.

[0007] As a preferred technical scheme of the utility model, the second sliding sleeve is provided with two, and a first limiting ring is fixedly connected between the two second sliding sleeves.

[0008] As a preferred technical scheme of the utility model, the fixing ring, the annular electromagnet, the first limiting ring and the second limiting ring are concentric circles, and knobs are symmetrically screw-connected to the outer ends of the second limiting ring.

[0009] As a preferred technical scheme of the utility model, a controller is mounted on one side of the upper end of the base, the controller is electrically connected with the annular electromagnet and the electric telescopic rod, and a hollow opening is formed in the middle of the base.

[0010] The utility model has the following advantages: the utility model can lift the electric telescopic rod to make the lock hole be opposite to the plug rod, so that the plug rod can be quickly fixed on the second sliding sleeve, the annular electromagnet is driven to descend by the electric telescopic rod, and the falling hammer instrument body is magnetically adsorbed, so that personnel manually pick up the falling hammer instrument body is not needed.

[0011] By tightening the knob, the guide rod can be locked to avoid the falling hammer instrument body from falling, the plug rod is separated from the lock hole by being pulled outward, the electric telescopic rod in the second sliding sleeve can be moved downward, the occupied space can be reduced, and the storage box can be moved conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the overall structure schematic view of the preferred embodiment of the utility model;

[0013] Figure 2 It is the electric telescopic rod and annular electromagnet storage structure schematic view of the preferred embodiment of the utility model;

[0014] Figure 3 It is the partial sectional structure schematic view of the preferred embodiment of the utility model;

[0015] Figure 4 It is the preferred embodiment of the utility model Figure 3 Structure A enlarged schematic view.

[0016] Explanation of reference signs: 1, base; 2, vertical rod; 3, first sliding sleeve; 4, fixed rod; 5, fixed ring; 6, annular electromagnet; 7, drop hammer instrument body; 8, guide rod; 9, second sliding sleeve; 10, first limiting ring; 11, electric telescopic rod; 12, second limiting ring; 13, knob; 14, controller; 15, limiting frame; 16, plug rod; 17, spring; 18, lock hole; 19, hollow mouth. DETAILED DESCRIPTION

[0017] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings. In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying the importance of the opposite.

[0018] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0019] The utility model will be further described below in combination with the drawings.

[0020] Please refer to Figures 1-4 The utility model discloses a highway engineering pavement resilience test device, which comprises a base 1, vertical rods 2 are symmetrically arranged at the top of the base 1, first sliding sleeves 3 are slidably sleeved on the outer side of the vertical rods 2, fixed rods 4 are fixedly connected to the outer side of the first sliding sleeves 3, fixed rings 5 are fixedly connected to one end of the fixed rods 4, annular electromagnets 6 are fixedly installed at the bottom of the fixed rings 5, drop hammer instrument bodies 7 are magnetically attracted and connected to the bottom of the annular electromagnets 6, second sliding sleeves 9 are fixedly connected to one side of the top of the vertical rods 2, and electric telescopic rods 11 are slidably sleeved in the second sliding sleeves 9.

[0021] In combination with Figure 3 And Figure 4As shown in the drawing, the middle part of the top end of the falling weight tester body 7 is connected with a guide rod 8, the outer side of the second sliding sleeve 9 is fixedly connected with a limiting frame 15, the inside of the limiting frame 15 is slidably connected with a plug rod 16, the inside of the limiting frame 15 is sleeved with a spring 17 at one end, the outer side of the one end of the electric telescopic rod 11 is provided with a lock hole 18, and the lock hole 18 is matched with the plug rod 16. Further, when not in use, only the plug rod 16 is separated from the lock hole 18 by pulling outward, and then the electric telescopic rod 11 in the second sliding sleeve 9 can be moved downward, thereby reducing the occupied space and facilitating the movement of the storage box.

[0022] The two second sliding sleeves 9 are fixedly connected with a first limiting ring 10, the upper end of the electric telescopic rod 11 is fixedly connected with a second limiting ring 12, the fixed ring 5, the annular electromagnet 6, the first limiting ring 10 and the second limiting ring 12 are concentric circles, the outer side of the two ends of the second limiting ring 12 is symmetrically screw-connected with a knob 13, the guide rod 8 in the middle part of the second limiting ring 12 can be fixed by tightening the knob 13, a controller 14 is installed on one side of the upper end of the base 1, the controller 14 is electrically connected with the annular electromagnet 6 and the electric telescopic rod 11, a hollow opening 19 is formed in the middle part of the base 1, and a universal brake wheel is installed at the bottom of the base 1.

[0023] Specifically, when the utility model is used, the test device is first moved to the test position, then the electric telescopic rod 11 can be manually lifted along the second sliding sleeve 9, so that the lock hole 18 on the electric telescopic rod 11 is opposite to the plug rod 16, so that the electric telescopic rod 11 can be fixed on the second sliding sleeve 9, then the annular electromagnet 6 can be attracted to the falling weight tester body 7 by the controller 14 generating a magnetic force, then the knob 13 on the second limiting ring 12 is loosened to stop locking the guide rod 8, and then the controller 14 can control the electric telescopic rod 11 to drive the annular electromagnet 6 and the falling weight tester body 7 to ascend and descend, the height of adjustment can be seen through the scale line on the vertical rod 2, and then the annular electromagnet 6 is only needed to be powered off through the controller 14, so that the falling weight tester body 7 can freely fall, so that the road surface rebound performance can be tested, and when the falling weight tester body 7 needs to be picked up, the annular electromagnet 6 can be lowered by the electric telescopic rod 11 to magnetically attract the falling weight tester body 7, so that the falling weight tester body 7 does not need to be manually picked up by personnel.

[0024] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and decorations can be made without departing from the principle of the utility model, and these improvements and decorations should also be regarded as the protection range of the utility model.

[0025] Other parts not described in the utility model are all prior art, so they will not be described here.

[0026] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A highway engineering pavement rebound testing device comprising: The base (1) is characterized in that the base (1) is symmetrically provided with a stand (2) at both sides of the top end, a first sliding sleeve (3) is sleeved on the outer side of the stand (2), a fixed rod (4) is fixedly connected to the outer side of the first sliding sleeve (3), a fixed ring (5) is fixedly connected to one end of the fixed rod (4), an annular electromagnet (6) is fixedly installed at the bottom of the fixed ring (5), a drop hammer instrument body (7) is magnetically attracted and connected to the bottom of the annular electromagnet (6), a second sliding sleeve (9) is fixedly connected to one side of the top end of the stand (2), and an electric telescopic rod (11) is slidably sleeved in the second sliding sleeve (9).

2. The highway engineering pavement resiliometer test device of claim 1, wherein, The drop hammer instrument body (7) is connected with a guide rod (8) at the top end, a limiting frame (15) is fixedly connected to the outer side of the second sliding sleeve (9), a plug rod (16) is slidably and penetratingly connected in the limiting frame (15), and a spring (17) is sleeved on one end of the plug rod (16) in the limiting frame (15).

3. The highway engineering pavement resiliometer test device of claim 1, wherein, The electric telescopic rod (11) is provided with a lock hole (18) on the outer side of one end of the plug rod (16), and the lock hole (18) is matched with the plug rod (16).

4. The highway engineering pavement resiliometer device of claim 1, wherein, The second sliding sleeve (9) is provided in two numbers, and a first limiting ring (10) is fixedly connected between the two second sliding sleeves (9).

5. The highway engineering pavement resiliometer device of claim 1, wherein, The fixed ring (5), the annular electromagnet (6), the first limiting ring (10) and the second limiting ring (12) are concentric circles, and knobs (13) are symmetrically and threadedly connected to the outer side of both ends of the second limiting ring (12).

6. The highway engineering pavement resiliency testing device of claim 1, wherein, A controller (14) is installed on one side of the upper end of the base (1), the controller (14) is electrically connected with the annular electromagnet (6) and the electric telescopic rod (11), and a hollow opening (19) is formed in the middle of the base (1).

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