A highway asphalt mixture grading inspection screening machine
By setting a counterweight mechanism and rigid locking blocks and slots to fix the screening frame in the screening machine, combined with vibration damping plates and threaded columns to prevent shaking, the problems of equipment tipping over and screening frame falling off are solved, and the stability and safety of the equipment during large-scale asphalt screening are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI LUAN ENGINEERING QUALITY INSPECTION TECHNICAL SERVICES CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-02
AI Technical Summary
Existing screening machines are prone to tipping over when screening asphalt mixtures due to rapid shifts in the center of gravity, and loose connecting parts can cause the screening frame to fall off. Furthermore, the stability of the base cannot be effectively increased.
By setting up a counterweight mechanism, pure water is injected into the watertight compartment to increase the weight of the equipment. The screening frame is fixed by rigid blocks and slots. Combined with a vibration mechanism and threaded column vibration damping plate, the equipment is prevented from shaking and its stability is ensured.
It effectively prevents the equipment from tipping over, ensures the screening frame is fixed, improves the stability and safety of the equipment when screening large quantities of asphalt, and prevents shaking and falling off.
Smart Images
Figure CN224308949U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening equipment technology, and in particular to a screening machine for testing the gradation of highway asphalt mixtures. Background Technology
[0002] In highway construction, construction companies, supervisors, or quality inspection agencies need to use screening machines to sample and inspect asphalt mixtures. Highway asphalt mixture gradation testing screening machines are mainly used to screen asphalt mixture samples to test the proportion of different particle size components. They separate particles of different sizes in the mixture through a series of screens to ensure that it meets relevant standards and design requirements.
[0003] Most existing screening machines use clamps to fix multiple screening frames together when screening asphalt, which is relatively cumbersome. Under large vibration amplitude, the bolts connecting the clamps may loosen, causing the screening frames to separate. If vibration continues unnoticed, the screening frames may fall off and cause damage. At the same time, some existing vertical screening machines cannot effectively add counterweight to the base when vibrating and screening. Therefore, when screening a large amount of asphalt at a time, the rapid transfer of gravity may cause the base to become unstable, resulting in the risk of the entire screening equipment tipping over.
[0004] Therefore, those skilled in the art have provided a screening machine for testing the gradation of asphalt mixtures for highways to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a highway asphalt mixture gradation testing screening machine. Through a counterweight mechanism, a suitable amount of pure water is injected into the watertight chamber via a water inlet valve pipe, thereby increasing the overall weight of the counterweight ring. This avoids the problem of equipment tipping over due to rapid shift of the center of gravity during a single large-scale asphalt screening.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A highway asphalt mixture gradation testing screening machine includes a chassis. A counterweight mechanism, a vibration mechanism, and a screening mechanism are sequentially arranged on the upper end of the chassis. The counterweight mechanism includes a counterweight ring fixedly connected to the chassis. The counterweight ring has multiple watertight cavities inside. The vibration mechanism includes a vibrating plate. Multiple damping springs are fixedly connected to the edge of the lower surface of the vibrating plate. A vibration motor is fixedly connected to the center of the lower surface of the vibrating plate.
[0008] The screening mechanism includes multiple screening frames. Multiple mounting seats are fixedly connected to the edges of the upper surface of each screening frame. Rigid slots are fixedly connected to the inner walls of each mounting seat. Multiple rigid blocks are rigidly connected to the lower surface of each screening frame. Screening grooves are opened at the center of the upper surface of each screening frame. Multiple positioning grooves are opened on the inner walls of each screening groove. Filter rings are provided inside each screening groove. Screening steel mesh is fixedly connected to the inner walls of each filter ring.
[0009] Through the above technical solution, the counterweight mechanism, screening mechanism and vibration mechanism work together to achieve screening while making the equipment versatile and selective, allowing the equipment to select the required components according to the needs.
[0010] Furthermore, the multiple watertight cavities are interconnected, and a drain valve pipe is connected to the lower end of the outer wall of one side of the counterweight ring, while a water inlet valve pipe is connected to the upper end of the outer wall of one side of the counterweight ring.
[0011] The above technical solution effectively increases the weight at the bottom of the equipment by using a counterweight mechanism, thereby preventing it from tipping over.
[0012] Furthermore, the vibration mechanism also includes multiple threaded plates fixedly connected to the upper end of the outer wall of the counterweight ring, each threaded plate having a threaded post threadedly connected to its inner wall, and multiple vibration damping plates fixedly connected to the outer wall of the vibration plate, with the upper surface of each threaded post tightly fitting against the lower surface of the vibration damping plate.
[0013] The above technical solution, through the installation of threaded columns and vibration damping plates, can effectively prevent the upper components of the equipment from shaking during transportation or when not in use.
[0014] Furthermore, a discharge groove is provided on one side of the outer wall of the screening frame, and a discharge hopper is provided on one side of the discharge groove;
[0015] The above technical solution effectively discharges the screened materials through the set discharge trough and discharge hopper.
[0016] Furthermore, a sealing plate slides at the upper end of the discharge trough;
[0017] The above technical solution effectively seals off the discharge chute using the enclosed plate.
[0018] Furthermore, the lower surface of each damping spring is fixedly connected to the upper surface of the counterweight ring;
[0019] The above technical solution effectively assists the vibration of the vibrating plate by using damping springs.
[0020] Furthermore, a plurality of positioning blocks are fixedly connected to the outer wall of the filter ring, and the positioning blocks slide inside the positioning groove;
[0021] The above technical solution effectively prevents the filter ring from moving due to the vibration of the vibration mechanism by setting up positioning blocks.
[0022] Furthermore, a collection groove is provided at the center of the upper surface of the vibrating plate;
[0023] The above technical solution allows for easier placement of containers in the collection trough, thus facilitating the collection of the final materials.
[0024] This utility model has the following beneficial effects:
[0025] 1. The present invention proposes a highway asphalt mixture gradation testing screening machine, which, through a counterweight mechanism, injects an appropriate amount of pure water into the watertight compartment through a water inlet valve pipe, thereby increasing the overall weight of the counterweight ring and thus avoiding the problem of equipment tipping over due to rapid shift of the center of gravity during a single large-scale asphalt screening.
[0026] 2. The highway asphalt mixture gradation testing screening machine proposed in this utility model uses a screening mechanism to place the screening frame into the interior of the mounting base through a rigid clamp, and then make the rigid clamp engage with the rigid groove to fix the screening frame, thereby avoiding the situation of falling off caused by the traditional use of clamps for fixing. Attached Figure Description
[0027] Figure 1 This is an isometric view of a highway asphalt mixture gradation testing screening machine proposed in this utility model;
[0028] Figure 2 This is an exploded view of a highway asphalt mixture gradation testing screening machine proposed in this utility model;
[0029] Figure 3 This is a schematic diagram of the vibration mechanism in a highway asphalt mixture gradation testing screening machine proposed in this utility model;
[0030] Figure 4 This is an isometric view of the vibration mechanism in a highway asphalt mixture gradation testing screening machine proposed in this utility model;
[0031] Figure 5 This is a schematic diagram of the screening mechanism in a highway asphalt mixture gradation testing screening machine proposed in this utility model;
[0032] Figure 6 This is a schematic diagram of the screening frame in the screening mechanism of this utility model;
[0033] Figure 7 A cross-sectional view of the counterweight mechanism in a highway asphalt mixture gradation testing screening machine is presented in this utility model.
[0034] Legend:
[0035] 1. Chassis;
[0036] 2. Counterweight mechanism; 201. Counterweight ring; 202. Drain valve pipe; 203. Inlet valve pipe; 204. Watertight compartment;
[0037] 3. Screening mechanism; 301. Screening frame; 302. Mounting base; 303. Screening trough; 304. Positioning groove; 305. Rigid locking block; 306. Filter ring; 307. Enclosing plate; 308. Discharge hopper; 309. Rigid locking groove; 310. Discharge trough; 311. Screening steel mesh; 312. Positioning block;
[0038] 4. Vibration mechanism; 401. Vibration plate; 402. Vibration damping plate; 403. Damping spring; 404. Threaded column; 405. Threaded plate; 406. Collection tank; 407. Vibration motor. Detailed Implementation
[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0040] One specific embodiment of this utility model is provided:
[0041] Reference Figure 1 , Figure 2 and Figure 3 :
[0042] A highway asphalt mixture gradation testing screening machine includes a chassis 1. A counterweight mechanism 2, a vibration mechanism 4 and a screening mechanism 3 are sequentially arranged on the upper end of the chassis 1. The counterweight mechanism 2 includes a counterweight ring 201 fixedly connected to the chassis 1. The counterweight ring 201 has multiple watertight cavities 204 inside. The vibration mechanism 4 includes a vibrating plate 401. Multiple damping springs 403 are fixedly connected to the edge of the lower surface of the vibrating plate 401. A vibration motor 407 is fixedly connected to the center of the lower surface of the vibrating plate 401.
[0043] Reference Figure 4 , Figure 5 and Figure 6 :
[0044] The screening mechanism 3 includes multiple screening frames 301. Multiple mounting seats 302 are fixedly connected to the edges of the upper surface of each screening frame 301. Rigid slots 309 are fixedly connected to the inner walls of each mounting seat 302. Multiple rigid blocks 305 are rigidly connected to the lower surface of each screening frame 301. Screening grooves 303 are opened at the center of the upper surface of each screening frame 301. Multiple positioning grooves 304 are opened on the inner walls of each screening groove 303. Filter rings 306 are provided inside each screening groove 303. Screening steel mesh 311 is fixedly connected to the inner walls of each filter ring 306.
[0045] By cooperating with the counterweight mechanism 2, the screening mechanism 3 and the vibration mechanism 4, the equipment can achieve screening while also being versatile and selective, allowing the equipment to choose the required components according to its needs.
[0046] Reference Figure 7 :
[0047] Multiple watertight cavities 204 are interconnected. A drain valve pipe 202 is connected to the lower end of the outer wall of one side of the counterweight ring 201, and a water inlet valve pipe 203 is connected to the upper end of the outer wall of one side of the counterweight ring 201. The counterweight mechanism 2 can effectively increase the gravity at the bottom of the equipment, thereby preventing it from tipping over.
[0048] Reference Figure 3 :
[0049] The vibration mechanism 4 also includes multiple threaded plates 405 fixedly connected to the upper end of the outer wall of the counterweight ring 201. The inner wall of each threaded plate 405 is threaded with a threaded post 404. Multiple vibration damping plates 402 are fixedly connected to the outer wall of the vibration plate 401. The upper surface of each threaded post 404 is in close contact with the lower surface of each vibration damping plate 402. Through the threaded post 404 and vibration damping plate 402, the problem of the upper part of the equipment shaking during transportation or when not in use can be effectively prevented.
[0050] Reference Figure 5 :
[0051] A discharge trough 310 is provided on one side of the outer wall of the screening frame 301, and a discharge hopper 308 is provided on one side of the discharge trough 310. The screened material can be effectively discharged through the discharge trough 310 and the discharge hopper 308. A closing plate 307 slides on the upper end of the discharge trough 310, which can effectively close the discharge trough 310.
[0052] Reference Figure 3 , Figure 4 and Figure 5 :
[0053] The lower surface of the damping spring 403 is fixedly connected to the upper surface of the counterweight ring 201. The damping spring 403 can effectively assist the vibration of the vibrating plate 401. Multiple positioning blocks 312 are fixedly connected to the outer wall of the filter ring 306. The positioning blocks 312 slide inside the positioning groove 304. The positioning blocks 312 can effectively prevent the filter ring 306 from moving with the vibration of the vibration mechanism 4. A collection groove 406 is provided at the center of the upper surface of the vibrating plate 401. The collection groove 406 makes it easier to place the basin and collect the final material.
[0054] Working principle: During use, an appropriate amount of pure water is injected into the watertight cavity 204 through the water inlet valve pipe 203 to increase the weight of the counterweight ring 201. Then, a suitable number of screening frames 301 are selected according to the needs, and a screening steel mesh 311 with a suitable aperture is selected. The screening steel mesh 311 is then placed into the positioning groove 304 inside the screening frame 301 through the positioning block 312. Then, according to the quantity of asphalt mixture to be screened, the closing plate 307 is selectively pulled out from the discharge chute 310. Then, the screening frames 301 are stacked from top to bottom according to the aperture size of the screening steel mesh 311. When stacking the screening frames 301, the rigid locking block 305 at the lower end of the screening frame 301 is used to... The rigid slot 309 of the mounting base 302 is used to insert the rigid block 305 and engage it with the rigid slot 309. Then, the threaded column 404 is rotated to separate the threaded column 404 from the vibration damping plate 402. The asphalt mixture is then placed into the uppermost screening frame 301. The vibration motor 407 is then started to vibrate, causing the vibration plate 401 to drive multiple screening frames 301 to vibrate, thereby vibrating and screening the asphalt mixture. When there is a large amount of asphalt mixture, the closed plate 307 is pulled out, and the screened material enters the upper end of the discharge hopper 308 through the discharge chute 310 and is then discharged. When there is a small amount of asphalt mixture, it can be directly stored inside the screening frame 301.
[0055] The following points should be noted in this article:
[0056] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.
[0057] 2. Where there is no conflict, the embodiments of this disclosure and the features thereof can be combined with each other to obtain new embodiments.
[0058] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The specific meaning of the above terms in this utility model shall be understood by those skilled in the art based on the specific circumstances. In addition, unless otherwise stated, "multiple" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation on this utility model; the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A highway asphalt mixture gradation testing screening machine, comprising a chassis (1), characterized in that: The upper end of the chassis (1) is provided with a counterweight mechanism (2), a vibration mechanism (4) and a screening mechanism (3). The counterweight mechanism (2) includes a counterweight ring (201) fixedly connected to the chassis (1). The counterweight ring (201) has multiple watertight cavities (204) inside. The vibration mechanism (4) includes a vibration plate (401). Multiple damping springs (403) are fixedly connected to the edge of the lower surface of the vibration plate (401). A vibration motor (407) is fixedly connected to the center of the lower surface of the vibration plate (401). The screening mechanism (3) includes multiple screening frames (301). Multiple mounting seats (302) are fixedly connected to the edges of the upper surface of each screening frame (301). Rigid slots (309) are fixedly connected to the inner walls of each mounting seat (302). Multiple rigid blocks (305) are rigidly connected to the lower surface of each screening frame (301). Screening grooves (303) are opened at the center of the upper surface of each screening frame (301). Multiple positioning grooves (304) are opened on the inner walls of each screening groove (303). Filter rings (306) are provided inside each screening groove (303). Screening steel mesh (311) is fixedly connected to the inner walls of each filter ring (306).
2. The highway asphalt mixture gradation testing screening machine according to claim 1, characterized in that: The multiple watertight cavities (204) are interconnected. The lower end of the outer wall of one side of the counterweight ring (201) is connected to a drain valve pipe (202), and the upper end of the outer wall of one side of the counterweight ring (201) is connected to a water inlet valve pipe (203).
3. The highway asphalt mixture gradation testing screening machine according to claim 1, characterized in that: The vibration mechanism (4) also includes multiple threaded plates (405) fixedly connected to the upper end of the outer wall of the counterweight ring (201). The inner walls of the threaded plates (405) are all threaded with threaded posts (404). The outer walls of the vibration plate (401) are fixedly connected with multiple vibration damping plates (402). The upper surface of the threaded posts (404) is in close contact with the lower surface of the vibration damping plates (402).
4. The highway asphalt mixture gradation testing screening machine according to claim 1, characterized in that: The outer wall of one side of the screening frame (301) is provided with a discharge groove (310), and a discharge hopper (308) is provided on one side of the discharge groove (310).
5. A highway asphalt mixture gradation testing screening machine according to claim 4, characterized in that: A sealing plate (307) slides at the upper end of the discharge trough (310).
6. The highway asphalt mixture gradation testing screening machine according to claim 1, characterized in that: The lower surface of the damping spring (403) is fixedly connected to the upper surface of the counterweight ring (201).
7. A highway asphalt mixture gradation testing screening machine according to claim 1, characterized in that: The outer wall of the filter ring (306) is fixedly connected with a plurality of positioning blocks (312), and the positioning blocks (312) slide inside the positioning groove (304).
8. A highway asphalt mixture gradation testing sieve machine according to claim 1, characterized in that: A collection groove (406) is provided at the center of the upper surface of the vibrating plate (401).