Road surface loading device

Abstract

The utility model belongs to the technical field of loading test equipment, and particularly relates to a road surface loading device. The pavement loading device comprises a rack; an annular transmission member; the plurality of loading units are connected to the annular transmission part and are arranged at intervals along the circumferential direction of the annular transmission part; and the power piece is arranged on the rack and connected with the annular transmission piece, and the power piece is used for driving the annular transmission piece and the plurality of loading units to do circular motion. The road surface loading device comprises a power part, an annular transmission part and a plurality of loading units, the plurality of loading units are arranged on the annular transmission part and are arranged at intervals along the circumferential direction of the annular transmission part, the power part is connected with the annular transmission part, and the annular transmission part is connected with the annular transmission part. And the power piece is used for driving the annular transmission piece and the plurality of loading units to do circular motion, and through the structure, the plurality of loading units can be driven to do synchronous motion only by arranging one power piece, so that the difficulty of synchronous control can be simplified and reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of loading test equipment, and particularly relates to a pavement loading device. Background Art

[0002] At present, most of the existing pavement fatigue testing machines in China are realized by simulating a trolley or a single tire to make reciprocating movements. Such a device has a large impact during acceleration and deceleration, generally does not have a very high designed speed, and has a long test cycle. Another type of loading device with multi-wheel group circular motion has difficult synchronous control because the power is dispersed on each tire. Therefore, for those skilled in the art, how to provide a pavement loading device with a new structure to improve the technical problems in the above-mentioned patented technologies has relatively practical significance. Summary of the Utility Model

[0003] In view of this, in order to improve at least one of the above-mentioned problems existing in the prior art, the utility model provides a pavement loading device.

[0004] The first aspect of the utility model provides a pavement loading device, including:

[0005] A frame;

[0006] An annular transmission member, the annular transmission member includes a linear transmission part located on the lower side;

[0007] A plurality of loading units, connected to the annular transmission member and arranged at intervals along the circumferential direction of the annular transmission member;

[0008] A power member, arranged on the frame and connected to the annular transmission member, the power member is used to drive the annular transmission member and a plurality of loading units to make circular motions.

[0009] In a feasible implementation manner, a moving unit is included, and the moving units are respectively arranged at both ends of the frame.

[0010] In a feasible implementation manner, a moving track used in cooperation with the moving unit is included.

[0011] In a feasible implementation manner, the frame is slidably connected to the moving unit, and the frame can move vertically relative to the moving unit.

[0012] In a feasible implementation manner, a lifting leg is included, and the lifting leg is used to drive the frame to move up and down.

[0013] In a feasible implementation manner, the lifting leg includes a leg frame and a leg oil cylinder, one end of the leg frame is connected to the frame, the other end of the leg frame extends away from the frame and the leg oil cylinder is arranged at the end.

[0014] In a feasible implementation, a plurality of loading units are detachably connected to the annular transmission member, and the positions of the plurality of loading units on the annular transmission member are adjustable.

[0015] In a feasible implementation, the annular transmission member includes a driving wheel, a driven wheel, and a transmission belt wound around the driving wheel and the driven wheel. The driving wheel and the driven wheel are rotatably arranged at both ends of the frame. The driving wheel is connected to the power member, and a plurality of loading units are connected to the transmission belt.

[0016] In a feasible implementation, it further includes a guiding track fixedly arranged on the frame, and sliding members slidably engaged with the guiding track are provided on a plurality of loading units.

[0017] In a feasible implementation, the loading unit includes a loading frame, a tire, and a loading curved beam. The tire is arranged inside the loading frame. The rotating shaft of the tire is rotatably connected to the middle of the loading curved beam. One end of the loading curved beam is hinged to one side of the loading frame through a loading cylinder for keeping the axle load applied to the tire constant. The other end of the loading curved beam is hinged to the other side of the loading frame, and sliding members slidably engaged with the guiding track are respectively provided on both sides of the loading frame.

[0018] Advantages of the above technical solution of the present utility model:

[0019] The road surface loading device of the present utility model includes a power member, an annular transmission member, and a plurality of loading units. The plurality of loading units are arranged on the annular transmission member and are spaced apart along the circumferential direction of the annular transmission member. The power member is connected to the annular transmission member, and the power member is used to drive the annular transmission member and the plurality of loading units to perform circular motion. Through the above structure, only one power member is needed to drive the plurality of loading units to move synchronously, thereby simplifying and reducing the difficulty of synchronous control. Description of the Drawings

[0020] Figure 1 Shown is a schematic structural diagram of a road surface loading device provided by an embodiment of the present utility model.

[0021] Figure 2 Shown is a schematic structural diagram of a road surface loading device provided by an embodiment of the present utility model.

[0022] Figure 3 Shown is a schematic structural diagram of a road surface loading device provided by an embodiment of the present utility model.

[0023] Figure 4 Shown is a schematic structural diagram of a road surface loading device provided by an embodiment of the present utility model.

[0024] Figure 5 The figure shows a schematic structural diagram of a loading unit provided by an embodiment of the present utility model.

[0025] Figure 6 The figure shows a schematic structural diagram of a loading unit provided by an embodiment of the present utility model.

[0026] Figure 7 The figure shows a schematic structural diagram of an annular transmission member provided by an embodiment of the present utility model.

[0027] Figure 8 The figure shows a schematic structural diagram of an annular transmission member provided by an embodiment of the present utility model.

[0028] Explanation of reference numerals:

[0029] 1 frame, 2 annular transmission member, 3 loading unit, 4 power member, 5 moving unit, 6 moving track, 7 lifting leg, 71 leg frame, 72 leg oil cylinder, 21 driving wheel, 22 driven wheel, 23 transmission belt, 31 loading frame, 32 tire, 33 loading curved beam, 34 sliding member, 35 loading cylinder. Detailed implementation manners

[0030] In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back, top, bottom...) are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0031] In addition, referring to "embodiment" in this article means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0032] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0033] Some embodiments of the road surface loading device in the technical solution of the present utility model and a construction machine including the road surface loading device are provided below.

[0034] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 shown, in an embodiment of the first aspect of the present utility model, a road surface loading device is provided, including a frame 1; an annular transmission member 2, the annular transmission member 2 includes a linear transmission portion located on the lower side; a plurality of loading units 3, connected to the annular transmission member 2 and arranged at intervals along the circumferential direction of the annular transmission member 2; a power member 4, arranged on the frame 1 and connected to the annular transmission member 2, the power member 4 is used to drive the annular transmission member 2 and a plurality of loading units 3 to perform circular motion.

[0035] Among them, the frame 1 is a base, providing support and installation space for other components. The power member 4 includes a motor or an engine plus a hydraulic motor and a speed reducer. When the power member 4 outputs power, since a plurality of loading units 3 are arranged on the annular transmission member 2, the annular transmission member 2 drives a plurality of loading units 3 to perform circular motion. The plurality of loading units 3 are used to perform a loading test on the road surface.

[0036] It should be noted that the overall shape of the annular transmission member 2 can adopt a variety of structural forms. As Figure 7 shown, the annular transmission member 2 can be formed by connecting three arc-shaped transmission portions located on the upper side and a linear transmission portion located on the lower side, and the connections between the arc-shaped transmission portions and between the arc-shaped transmission portion and the linear transmission portion are smoothly transitioned. As Figure 8 shown, the annular transmission member 2 can be formed by connecting three arc-shaped transmission portions and three linear transmission portions, and the connections between the arc-shaped transmission portions and the linear transmission portions are smoothly transitioned. No matter what structural form is adopted, the annular transmission member 2 includes a linear transmission portion located on the lower side, so that when the loading unit 3 moves along the linear transmission portion on the lower side, the tire 32 of the loading unit 3 contacts the ground, and at the same time, at least two loading units 3 are located on the linear transmission portion on the lower side.

[0037] According to the above, the road surface loading device of the present utility model includes a power member 4, an annular transmission member 2, and a plurality of loading units 3. The plurality of loading units 3 are arranged on the annular transmission member 2 and are spaced apart along the circumferential direction of the annular transmission member 2. The power member 4 is connected to the annular transmission member 2. The power member 4 is used to drive the annular transmission member 2 and the plurality of loading units 3 to perform circular motion. Through the above structure, only one power member 4 is needed to drive the plurality of loading units 3 to move synchronously, thereby simplifying and reducing the difficulty of synchronous control.

[0038] In some embodiments of the present utility model, the annular transmission member 2 includes a driving wheel 21, a driven wheel 22, and a transmission belt 23 wound around the driving wheel 21 and the driven wheel 22. The driving wheel 21 and the driven wheel 22 are rotatably arranged at both ends of the frame 1. The driving wheel 21 is connected to the power member 4. The plurality of loading units 3 are connected to the transmission belt 23. Specifically, optionally, the plurality of loading units 3 are rigidly connected to the transmission belt 23 by bolts. When the power member 4 outputs power, the power member 4 first drives the driving wheel 21. The driving wheel 21 rotates, and then drives the transmission belt 23 to rotate. The transmission belt 23 drives the plurality of loading units 3 to perform circular motion. Among them, the transmission belt 23 can be a chain or a belt. When the transmission belt 23 is a chain, the driving wheel 21 and the driven wheel 22 are gears that cooperate with it.

[0039] In some embodiments of the present utility model, it further includes a guiding track fixedly arranged on the frame 1. The plurality of loading units 3 are provided with sliding members 34 that are slidably matched with the guiding track. While the annular transmission member 2 drives the plurality of loading units 3 to perform circular motion, the plurality of loading units 3 are slidably matched with the guiding track. The guiding track can play a guiding and supporting role for the plurality of loading units 3, thereby improving the overall stability of the device and the smoothness of the motion. Specifically, optionally, the guiding track includes two straight guiding rails and two arc guiding rails. The two straight guiding rails are parallel up and down, and the two arc guiding rails are respectively connected to the two straight guiding rails to form a closed-loop guiding rail. Specifically, optionally, the sliding member 34 can be a ball or a roller. The plurality of loading units 3 are evenly arranged on the guiding track. When the loading unit 3 moves along the two side arc guiding rails or the horizontal upper straight guiding rail, the tire 32 of the loading unit 3 does not contact the ground. When the loading unit 3 moves along the horizontal lower straight guiding rail, the tire 32 of the loading unit 3 contacts the ground.

[0040] In some embodiments of the present utility model, the loading unit 3 includes a loading frame 31, a tire 32, a loading curved beam 33 and the sliding member 34. The tire 32 is arranged inside the loading frame 31. The rotating shaft of the tire 32 is rotatably connected to the middle of the loading curved beam 33. One end of the loading curved beam 33 is hinged to one side of the loading frame 31 through a loading cylinder 35, which is used to keep the axial load on the tire 32 constant. The other end of the loading curved beam 33 is hinged to the other side of the loading frame 31. Preferably, the number of guiding tracks is two, and the two guiding tracks are respectively arranged on both sides of the loading frame 31. Sliding members 34 that are slidably engaged with the guiding tracks are respectively arranged on both sides of the loading frame 31, whereby multiple loading units 3 can be better supported and guided, and the stress state can be improved. Specifically, optionally, the loading frame 31 is rigidly connected to the transmission belt 23 through bolts.

[0041] In some embodiments of the present utility model, a moving unit 5 is further included. The moving units 5 are respectively arranged at both ends of the frame 1. The moving unit 5 enables the whole device to move, and the position of the whole device can be changed according to needs, greatly improving the convenience of using the device. It can be understood that a braking member is provided on the moving unit 5. Optionally, the moving unit 5 includes a moving bracket and moving wheels arranged on the moving bracket.

[0042] In some embodiments of the present utility model, a moving track 6 used in cooperation with the moving unit 5 is further included. The whole device of the present utility model is erected on the track, enabling the whole device to move along the track direction, greatly improving the convenience of using the device. According to the length of the track laying, the device can move within a certain range, avoiding repeated disassembly and assembly, and greatly improving the convenience.

[0043] Since the thickness of the test road surface is not equal, in order to enable the device to adapt to test road surfaces of most thicknesses, in some embodiments of the present utility model, the frame 1 is slidably connected to the moving unit 5, and the frame 1 can move vertically relative to the moving unit 5. In this way, when the frame 1 moves vertically relative to the moving unit 5, the relative height between the loading unit 3 and the road surface to be measured can be adjusted, enabling the device to adapt to test road surfaces of most thicknesses. Specifically, optionally, a plurality of first positioning holes are provided on the moving unit 5, and a plurality of second positioning holes are provided on the frame 1. By passing positioning bolts through different first positioning holes and second positioning holes, the height of the frame 1 can be adjusted.

[0044] To facilitate the lifting of the lifting frame 1, in some embodiments of the present utility model, a lifting support leg 7 is further included. On the one hand, the lifting support leg 7 can play a supporting role. On the other hand, the lifting support leg 7 can drive the frame 1 to lift up and down. Specifically, optionally, the lifting support leg 7 includes a support leg frame 71 and a support leg oil cylinder 72. One end of the support leg frame 71 is connected to the frame 1, and the other end of the support leg frame 71 extends away from the frame 1 and the support leg oil cylinder 72 is arranged at the end. With such a setting, the stability of the device can be improved. Preferably, a support plate is provided at the bottom end of the support leg oil cylinder 72 to expand the grounding area and further improve the stability of the support. In some specific embodiments of the present utility model, the number of the lifting support legs 7 is 4, and the 4 lifting support legs 7 are respectively arranged on both sides of the frame 1. The support leg frame 71 is vertically connected to the frame 1, and the support leg oil cylinder 72 and the support leg frame 71 are vertically connected. In this embodiment, there are large-stroke support leg oil cylinders 72 around the device, which can adjust the relative height between the loading unit 3 and the measured road surface, so that the device can adapt to test road surfaces of most thicknesses. When a plurality of positioning holes are provided on the frame 1, the frame 1 is lifted to the height of the corresponding positioning hole by the support leg oil cylinder 72 and then fixed to realize the height adjustment between the loading unit 3 and the measured road surface.

[0045] In some embodiments of the present utility model, a plurality of loading units 3 are detachably connected to the annular transmission member 2, and the positions of the plurality of loading units 3 on the annular transmission member 2 are adjustable. In this way, the relative positions between the plurality of loading units 3 can be adjusted according to needs, so that they can be adjusted within a certain range, and the applicable range of the device is expanded.

[0046] In summary, the road surface loading device of the present utility model includes a power member 4, an annular transmission member 2, and a plurality of loading units 3. The plurality of loading units 3 are arranged on the annular transmission member 2 and are spaced apart along the circumferential direction of the annular transmission member 2. The power member 4 is connected to the annular transmission member 2, and the power member 4 is used to drive the annular transmission member 2 and the plurality of loading units 3 to perform circular motion. Through the above structure, only one power member 4 is needed to drive the plurality of loading units 3 to move synchronously, thereby simplifying and reducing the difficulty of synchronous control.

[0047] The basic principle of the present utility model has been described above in combination with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in the present utility model are only examples and not limitations. It cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of the present utility model. In addition, the above-disclosed specific details are only for the purpose of illustration and easy understanding, rather than limitations. The above details do not limit the present utility model to necessarily adopt the above specific details to implement.

[0048] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present utility model are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended terms, meaning "including but not limited to", and can be used interchangeably with each other. The words "or" and "and" used herein refer to the phrase "and / or", and can be used interchangeably with it, unless the context clearly indicates otherwise. The phrase "such as" used herein refers to the phrase "such as but not limited to", and can be used interchangeably with it. It should also be noted that in the devices and equipment of the present utility model, each component can be disassembled and / or recombined. These disassembly and / or recombination should be regarded as equivalent solutions of the present utility model.

[0049] The above description of the disclosed aspects of the present utility model enables any person skilled in the art to make or use the present utility model. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present utility model. Therefore, the present utility model is not intended to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features of the present utility model.

[0050] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A road surface loading device, characterized in that: include: Rack (1); An annular transmission member (2), the annular transmission member (2) comprising a linear transmission portion located at the lower side; A plurality of loading units (3) connected to the annular transmission member (2) and arranged at intervals along the circumferential direction of the annular transmission member (2); A power member (4) is arranged on the frame (1) and connected to the annular transmission member (2). The power member (4) is used to drive the annular transmission member (2) and a plurality of loading units (3) to perform circular motion.

2. The road surface loading device according to claim 1, characterized in that: It comprises a moving unit (5), and the moving units (5) are respectively arranged at two ends of the frame (1).

3. The road surface loading device according to claim 2, characterized in that: It comprises a moving track (6) used in conjunction with the moving unit (5).

4. The road surface loading device according to claim 2, characterized in that: The frame (1) is slidably connected to the moving unit (5), and the frame (1) can move vertically relative to the moving unit (5).

5. The road surface loading device according to claim 1, characterized in that: It comprises lifting legs (7), and the lifting legs (7) are used to drive the frame (1) to move up and down.

6. The road surface loading device according to claim 5, characterized in that: The lifting leg (7) comprises a leg frame (71) and a leg cylinder (72); one end of the leg frame (71) is connected to the frame (1); the other end of the leg frame (71) extends in a direction away from the frame (1) and the leg cylinder (72) is arranged at the end.

7. The road surface loading device according to claim 1, characterized in that: The plurality of loading units (3) are detachably connected to the annular transmission member (2), and the positions of the plurality of loading units (3) on the annular transmission member (2) are adjustable.

8. The road surface loading device according to any one of claims 1 to 7, characterized in that: The annular transmission member (2) comprises a driving wheel (21), a driven wheel (22) and a transmission belt (23) wound around the driving wheel (21) and the driven wheel (22); the driving wheel (21) and the driven wheel (22) are rotatably arranged at two ends of the frame (1); the driving wheel (21) is connected to the power member (4); and a plurality of loading units (3) are connected to the transmission belt (23).

9. The road surface loading device according to any one of claims 1 to 7, characterized in that: It also comprises a guide rail fixedly arranged on the frame (1), and a plurality of the loading units (3) are provided with a sliding member (34) which is slidably matched with the guide rail.

10. The road surface loading device according to claim 9, characterized in that: The loading unit (3) comprises a loading frame (31), a tire (32) and a loading curved beam (33); the tire (32) is arranged inside the loading frame (31); the rotating shaft of the tire (32) is rotatably connected to the middle part of the loading curved beam (33); one end of the loading curved beam (33) is hinged to one side of the loading frame (31) through a loading cylinder (35); the other end of the loading curved beam (33) is hinged to the other side of the loading frame (31); and the sliding parts (34) slidably matched with the guide rails are respectively provided on both sides of the loading frame (31).

Images