Spreading device
By designing a spreading device for anti-slip sand, the gravel in the sand bucket is spread evenly by using roller vibration transmission, which solves the problems of uneven thickness and waste caused by manual spreading, and achieves an efficient and uniform spreading effect.
Patent Information
- Application Number
- CN202420946051.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In the prior art, the worker has a manual operation during the spreading process of anti-slip sand, resulting in uneven thickness and uneven surfaces, and a large amount of waste of gravel.
A spreading device is designed, including a support frame, a guide roller assembly and a sand bucket. Through the vibration of the roller, the gravel in the sand bucket is evenly passed through the sand leakage screen and spread on the layer to be spread to ensure uniform thickness and Flatness.
The thickness uniformity and flatness of the spreading layer are achieved, the waste of gravel is reduced, the spreading efficiency is improved, and the mechanized and standardized construction efficiency of the device is relatively high.
Smart Images
Figure CN222349434U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spreading surface sand, in particular to a spreading device. Background Art
[0002] In the prior art, the spreading of anti-skid sand is generally done by workers manually scattering obliquely or slowly vertically, and a layer of anti-skid sand is bonded and fixed on the glue layer on the surface of the mortar layer. The spreading of anti-skid sand should be completed after the glue layer is spread and before the initial setting, and the earlier it is completed, the better the effect. The anti-skid sand is required to be spread evenly, with a thickness of generally 0.5mm-1mm, without surface unevenness, and the surface flatness of the anti-skid sand must meet the requirements of 3mm / 4m. However, workers manually scatter the sand, relying only on feel and experience to control the amount of spreading per unit area to meet the spreading thickness requirements, which can easily cause uneven thickness of the surface sand and can easily destroy the local flatness of the surface sand. Utility Model Content
[0003] The utility model aims to provide a spreading device with uniform spreading thickness.
[0004] The utility model provides a spreading device for spreading sand on a layer to be spread, and the spreading device comprises:
[0005] A support frame, the support frame comprising a first support frame and a second support frame, the first support frame is arranged on one side of the paving device, and the second support frame is arranged on the other side opposite to the paving device;
[0006] A guide roller assembly, the guide roller assembly comprising a first roller and a second roller, the first roller being rotatably connected to the first bracket, the second roller being rotatably connected to the second bracket, the first roller and the second roller supporting the support frame; and
[0007] A sand hopper is connected to the first bracket and the second bracket, and the sand hopper includes a sand leakage screen arranged at the bottom thereof; when the first roller and the second roller roll relative to the layer to be spread, the vibration generated by the first roller and the second roller is transmitted to the sand hopper through the support frame.
[0008] In some embodiments, the first bracket includes a pair of relatively spaced first support members and a first elastic member, the first elastic member is connected between the pair of first support members, and the first elastic member has an elastic force that pulls the pair of first support members closer to each other; the second bracket includes a pair of relatively spaced second support members and a second elastic member, the second elastic member is connected between the pair of second support members, and the second elastic member has an elastic force that pulls the pair of second support members closer to each other; the pair of first support members is connected to one side of the sand bucket, and the pair of second support members is connected to the other side of the sand bucket.
[0009] In some embodiments, the first support member includes a first rotating rod and a first support rod, the first rotating rod is located at the top of the first support member, the first support rod is located at the bottom of the first support member, the first rotating rod is rotatably connected to the sand bucket, and the first roller is rotatably connected to the first support rod; the second support member includes a second rotating rod and a second support rod, the second rotating rod is located at the top of the second support member, the second support rod is located at the bottom of the second support member, the second rotating rod is rotatably connected to the sand bucket, and the second roller is rotatably connected to the second support rod; the first elastic member tightens a pair of the first support members so that the two first rollers can clamp the layer to be spread, and the second elastic member tightens a pair of the second support members so that the two second rollers can clamp the layer to be spread.
[0010] In some embodiments, the first roller includes a first roller, and the outer peripheral surface of the first roller is suitable for rolling against the layer to be spread; the second roller includes a second roller, and the outer peripheral surface of the second roller is suitable for rolling against the layer to be spread; the outer peripheral surface of the first roller and / or the outer peripheral surface of the second roller are provided with gears evenly arranged in a circle, and when the first roller and / or the second roller roll relative to the layer to be spread, the gears can cause the first roller and / or the second roller to vibrate.
[0011] In some embodiments, the first roller further includes first flanges respectively provided at opposite ends of the first roller, and the two first flanges are suitable for rollingly clamping the layer to be spread; the second roller further includes second flanges respectively provided at opposite ends of the second roller, and the two second flanges are suitable for rollingly clamping the layer to be spread.
[0012] In some embodiments, a first avoidance groove is provided on the side of the first flange facing the first roller, and a second avoidance groove is provided on the side of the second flange facing the second roller.
[0013] In some embodiments, first sleeves are respectively provided at two opposite ends of one side of the sand bucket, second sleeves are respectively provided at two opposite ends of the other side of the sand bucket, two first rotating rods are respectively inserted into the two first sleeves, and two second rotating rods are respectively inserted into the two second sleeves.
[0014] In some embodiments, the first bracket also includes a first connecting rod, one end of which is connected to the first support member, the axial direction of the first connecting rod is perpendicular to the axial direction of the first roller, a first handle is provided between a pair of first connecting rods, and the opposite ends of the first handle are respectively slidably connected to the pair of first connecting rods; the second bracket also includes a second connecting rod, one end of which is connected to the second support member, the axial direction of the second connecting rod is perpendicular to the axial direction of the second roller, a second handle is provided between the pair of second connecting rods, and the opposite ends of the second handle are respectively slidably connected to the pair of second connecting rods.
[0015] In some embodiments, the first bracket also includes a supporting rod, one end of which is connected to the first support member, and the other end of which is close to the second support member; the spreading device also includes a sand receiving plate, and the supporting rods of the pair of first support members support the sand receiving plate, and the sand receiving plate is located below the sand leakage screen, and the orthographic projection of the sand leakage screen on the upper surface of the sand receiving plate is located within the edge contour of the sand receiving plate.
[0016] In some embodiments, two opposite ends of the lower surface of the sand receiving plate are respectively provided with limiting grooves, and the two supporting rods are respectively supported by the two limiting grooves.
[0017] The support frame of the paving device of the utility model is used for supporting a sand bucket, the bottom of which is provided with a sand leakage screen facing the paving layer, and gravel is contained in the sand bucket; when the first roller and the second roller move relative to the layer to be paved, the support frame and the sand bucket vibrate evenly, so that the gravel in the sand bucket passes through the sand leakage screen and is evenly spread on the layer to be paved, which not only makes the thickness of the paving layer uniform, appropriate in thickness and high in flatness, but also reduces the waste of gravel and improves the efficiency of paving gravel. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solution of the present utility model, the drawings required for use in the implementation mode will be briefly introduced below.
[0019] Figure 1 It is a schematic diagram of the use state of the spreading device provided by the first embodiment of the utility model;
[0020] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the surface sand spreading device;
[0021] Figure 3 yes Figure 2 A schematic diagram of a three-dimensional structure breakdown of the surface sand paving device from another perspective;
[0022] Figure 4 yes Figure 2 A magnified view of the three-dimensional structure of the support frame;
[0023] Figure 5 yes Figure 2 A magnified three-dimensional structure diagram of the first roller and the second roller;
[0024] Figure 6 yes Figure 6 A three-dimensional structural side view of the first roller in FIG.
[0025] Figure 7 yes Figure 6 A side view of the first roller in FIG.
[0026] Figure 8 yes Figure 6 Stereoscopic cross-sectional view of
[0027] Fig. 9 yes Figure 1 An end view of a surface sand spreading device in FIG.
[0028] Fig.10 yes Figure 1 A side view of a surface sand spreading device in FIG.
[0029] Fig.11 yes Figure 1 Top view of the device for spreading the layer sand.
[0030] Description of reference numerals: 100, spreading device; 30, support frame; 32, first bracket; 320, first support member; 321, first rotating rod; 322, first support rod; 3220, first positioning hole; 3223, first positioning rod; 323, first connecting portion; 324, first connecting rod; 325, supporting rod; 327, first elastic member; 328, first handle; 3282, first guide slide hole; 34, second bracket; 340, second support member ; 341, second rotating rod; 342, second supporting rod; 3420, second positioning hole; 3423, second positioning rod; 343, second connecting portion; 344, second connecting rod; 347, second elastic member; 348, second handle; 3482, second guide slide hole; 50, guide roller assembly; 52, first roller; 521, first roller; 5210, gear; 523, first flange; 5232, first avoidance groove; 525, first receiving groove;
[0031] 526, first rotating shaft hole; 527, first mounting hole; 528, first bearing; 54, second roller;
[0032] 541, second roller; 543, second flange; 5432, second avoidance groove; 545, second receiving groove;
[0033] 546, second rotating shaft hole; 547, second mounting hole; 548, second bearing; 70, sand bucket; 71, bottom plate; 712, through groove; 72, sand leakage screen; 721, lap frame; 723, screen; 73, first sleeve; 74, second sleeve; 75, inclined plate; 76, end plate; 77, storage space; 90, sand receiving plate; 92, limiting groove; 200, layer to be spread. DETAILED DESCRIPTION
[0034] 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 part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0035] It should be noted that the reference to "embodiment" or "implementation method" in this document means that the specific features, structures or characteristics described in conjunction with the embodiment or implementation method may be included in at least one embodiment of the present utility model. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0036] The terms "first" and "second" appearing in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined. In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and defined, the terms "installed", "connected", "connected", and "set on..." should be understood in a broad sense, for example, it can be a fixed connection, or it can be a detachable connection, or it can be connected in one piece; it can be a mechanical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0037] See also Figure 1-Figure 4One embodiment of the utility model provides a spreading device 100 for spreading sand on a layer 200 to be spread. The spreading device 100 includes a support frame 30, a guide roller assembly 50, a sand bucket 70 and a sand receiving plate 90. The support frame 30 includes a first bracket 32 and a second bracket 34. The first bracket 32 is arranged on one side of the spreading device 100, and the second bracket 34 is arranged on the other side of the spreading device 100; the guide roller assembly 50 includes a first roller 52 and a second roller 54. The first roller 52 is rotatably connected to the first bracket 32, and the second roller 54 is rotatably connected to the first bracket 32. The two rollers 54 are rotatably connected to the second bracket 34, and the first roller 52 and the second roller 54 support the support frame 30; the sand bucket 70 is connected to the first bracket 32 and the second bracket 34, and the sand bucket 70 includes a sand leakage screen 72 arranged at the bottom thereof; when the first roller 52 and the second roller 54 roll relative to the layer to be spread 200, the vibration generated by the first roller 52 and the second roller 54 is transmitted to the sand bucket 70 through the support frame 30, so that the sand bucket 70 can vibrate uniformly, and the gravel in the sand bucket 70 passes through the sand leakage screen 72 and is evenly spread on the layer to be spread 200. In this embodiment, the sand bucket 70 is a strip sand bucket, the first bracket 32 is connected to one side of the sand bucket 70, and the second bracket 34 is connected to the other side of the sand bucket 70, and the first bracket 32 and the second bracket 34 jointly support the sand bucket 70. The layer to be spread 200 can be, but is not limited to, the surface layer of the running surface of the Yunba track beam, the surface layer of the non-motor vehicle surface, etc.
[0038] In the prior art, workers manually spread gravel, forming a range that is much wider than the surface width of the layer 200 to be spread, with poor effective utilization, resulting in about 30%-50% material waste; if manual vertical slow spreading is adopted, it is easy to form a phenomenon that the thickness of the surface sand is too thick, generally reaching 1mm-3mm, and the sand falls unevenly during the manual spreading of gravel, which easily leads to the appearance of more bulges or cone-shaped points, and at the same time affects the stability of the anti-slip surface structure of the layer 200 to be spread, and also causes a large amount of gravel waste. Compared with the prior art, the support frame 30 of the spreading device 100 of the utility model is used to support the sand hopper 70, and the bottom of the sand hopper 70 is provided with a sand leakage screen 72 facing the layer 200 to be spread, and the sand hopper 70 is filled with gravel; when the first roller 52 and the second roller 54 move relative to the layer 200 to be spread, the support frame 30 and the sand hopper 70 vibrate evenly, so that the gravel in the sand hopper 70 passes through the sand leakage screen 72 and is evenly spread on the layer 200 to be spread, which not only makes the thickness of the layer 200 to be spread uniform, the thickness is appropriate, and the flatness is high, but also reduces the waste of gravel and improves the efficiency of spreading gravel.
[0039] like Figure 3-Figure 5As shown, the first bracket 32 includes a pair of first support members 320, a first elastic member 327 and a first handle 328 that are relatively spaced apart. The first elastic member 327 is connected between the pair of first support members 320. The first elastic member 327 has an elastic force that pulls the pair of first support members 320 together so that the outer peripheral surface of the first roller 52 can roll against the layer 200 to be spread. The first handle 328 is connected between the pair of first support members 320; the second bracket 34 includes a pair of second support members 340, a second elastic member 347 and a second handle 348 that are relatively spaced apart. The second elastic member 347 is connected between the pair of second support members 340. The second elastic member 347 has an elastic force that pulls the pair of second support members 340 together so that the outer peripheral surface of the second roller 54 can roll against the layer 200 to be spread. The second handle 348 is connected between the pair of second support members 340. In this embodiment, the guide roller assembly 50 includes a pair of first rollers 52 and a pair of second rollers 54. The pair of first rollers 52 are rotatably connected to the bottom of a pair of first support members 320, and the pair of first rollers 52 are clamped on opposite sides of the layer 200 to be spread; the pair of second rollers 54 are rotatably connected to the bottom of a pair of second support members 340, and the pair of second rollers 54 are clamped on opposite sides of the layer 200 to be spread.
[0040] Optionally, the first support member 320 includes a first rotating rod 321 and a first support rod 322, the first rotating rod 321 is located at the top of the first support member 320, the first support rod 322 is located at the bottom of the first support member 320, the first rotating rod 321 is rotatably connected to the sand bucket 70, the first roller 52 is rotatably connected to the first support rod 322, and the first elastic member 327 tightens a pair of first support members 320 so that the two first rollers 52 can clamp the layer 200 to be spread; the second support member 340 includes a second rotating rod 341 and a second support rod 342, the second rotating rod 341 is located at the top of the second support member 340, the second support rod 342 is located at the bottom of the second support member 340, the second rotating rod 341 is rotatably connected to the sand bucket 70, the second roller 54 is rotatably connected to the second support rod 342, and the second elastic member 347 tightens a pair of second support members 340 so that the two second rollers 54 can clamp the layer 200 to be spread.
[0041] The first support member 320 also includes a first connecting portion 323, one end of the first rotating rod 321 is connected to one side of the top of the first connecting portion 323, one end of the first support rod 322 is connected to the other side of the bottom of the first connecting portion 323, and the length direction of the first rotating rod 321 is parallel to the length direction of the first support rod 322; the second support member 340 also includes a second connecting portion 343, one end of the second rotating rod 341 is connected to one side of the top of the second connecting portion 343, one end of the second support rod 342 is connected to the other side of the bottom of the second connecting portion 343, and the length direction of the second rotating rod 341 is parallel to the length direction of the second support rod 342. In this embodiment, the first connecting portion 323 is a first rectangular frame, one end of the first rotating rod 321 is connected to one end rod of the first rectangular frame, and one end of the first supporting rod 322 is connected to the other end rod of the first rectangular frame; the second connecting portion 343 is a second rectangular frame, one end of the second rotating rod 341 is connected to one end rod of the second rectangular frame, and one end of the second supporting rod 342 is connected to the other end rod of the second rectangular frame. In other embodiments, the first connecting portion 323 can be but not limited to a first parallelogram frame, a first trapezoidal frame, a first elliptical frame, etc.; the second connecting portion 343 can be but not limited to a second parallelogram frame, a second trapezoidal frame, a second elliptical frame, etc. In this embodiment, the first connecting portion 323 and the second connecting portion 343 are both pins with a length of 30 mm to 50 mm.
[0042] Optionally, the first bracket 32 also includes a first connecting rod 324, one end of the first connecting rod 324 is connected to the first support member 320, and the axial direction of the first connecting rod 324 is perpendicular to the axial direction of the first roller 52; specifically, one end of the first connecting rod 324 is connected to the first connecting portion 323, the first connecting rod 324 is located between the first rotating rod 321 and the first support rod 322 and close to one end of the first support rod 322, and the axial direction of the first connecting rod 324 is perpendicular to the axial direction of the first rotating rod 321; the second bracket 34 also includes a second connecting rod 344, one end of the second connecting rod 344 is connected to the second support member 340, and the axial direction of the second connecting rod 344 is perpendicular to the axial direction of the second roller 54; specifically, one end of the second connecting rod 344 is connected to the second connecting portion 343, the second connecting rod 344 is located between the second rotating rod 341 and the second support rod 342 and close to one end of the second support rod 342, and the axial direction of the second connecting rod 344 is perpendicular to the axial direction of the second rotating rod 341.
[0043] Optionally, the first bracket 32 further includes a supporting rod 325, one end of which is connected to the first support member 320, and the other end of which is close to the second support member 340. The supporting rods 325 of the pair of first support members 320 are used to support the sand receiving plate 90, and the length of the supporting rod 325 is slightly greater than the width of the sand receiving plate 90. Specifically, one end of the supporting rod 325 is connected to the first connecting portion 323 and is away from the side of the first connecting rod 324. Preferably, the supporting rod 325 is an arc-shaped rod, one end of which is connected to the side of the first connecting portion 323 away from the first rotating rod 321, and the other end of which is close to the second support member 340, and the middle part of which is bent toward the side away from the first rotating rod 321. The sand receiving plate 90 is a rectangular plate, and the opposite ends of the lower surface of the sand receiving plate 90 are respectively provided with limiting grooves 92, and two supporting rods 325 are respectively supported in the two limiting grooves 92, so that the sand receiving plate 90 is positioned on the first bracket 32. In this embodiment, the cross section of the sand receiving plate 90 perpendicular to its length direction is an arc-shaped surface, and the middle part of the sand receiving plate 90 protrudes toward the side away from the first rotating rod 321 to form a convex strip, and the opposite ends of the convex strip are respectively close to the opposite ends of the sand receiving plate 90, so that the opposite ends of the lower surface of the sand receiving plate 90 are respectively provided with a limiting groove 92, and the spacing between the two limiting grooves 92 is smaller than the spacing between the two supporting rods 325, so that the sand receiving plate 90 can be smoothly operated when placed on the support frame 30. Optionally, the arc size of the supporting rod 325 is substantially consistent with the arc size of the limiting groove 92, so that the supporting rod 325 is substantially fitted with the limiting groove 92. Optionally, the width section of the sand receiving plate 90 is "C"-shaped, the supporting rod 325 is a C-shaped rod, the width of the sand receiving plate 90 is slightly smaller than the length of the supporting rod 325, and the supporting rod 325 fits with the back of the sand receiving plate 90.
[0044] Optionally, the first support member 320 and the second support member 340 can be made of round steel with a diameter of 8 mm to 10 mm, bent and welded, which can meet the sufficient supporting force of the support frame 30 and is light and easy to operate. In other embodiments, the various components of the first support member 320 can also be fixedly connected by screwing, and the various components of the second support member 340 can also be fixedly connected by screwing. The first support member 320 and the second support member 340 can both be made of stainless steel or aluminum alloy.
[0045] The opposite ends of the first handle 328 are respectively slidably connected to the first connecting rods 324 of the pair of first supporting members 320, and the opposite ends of the second handle 348 are respectively slidably connected to the second connecting rods 344 of the pair of second supporting members 340. In this embodiment, the first handle 328 is a first operating rod, and the opposite end surfaces of the first operating rod are respectively provided with first guide slide holes 3282, and the length of the first guide slide hole 3282 along the length direction of the first operating rod is greater than the length of the first connecting portion 323 in the length direction, and the first connecting portion 323 can be slidably inserted into the first guide slide hole 3282; the second handle 348 is a second operating rod, and the opposite end surfaces of the second operating rod are respectively provided with second guide slide holes 3482, and the length of the second guide slide hole 3482 along the length direction of the second operating rod is greater than the length of the second connecting portion 343 in the length direction, and the second connecting portion 343 can be slidably inserted into the second guide slide hole 3482.
[0046] The outer circumference of the first support rod 322 is provided with two first positioning holes 3220 along its radial direction, wherein one first positioning hole 3220 is close to one end of the first connection portion 323, and the other first positioning hole 3220 is far away from one end of the first connection portion 323; the outer circumference of the second support rod 342 is provided with two second positioning holes 3420 along its radial direction, wherein one second positioning hole 3420 is located at one end close to the second connection portion 343, and the other second positioning hole 3420 is located at one end far away from the second connection portion 343. The first positioning hole 3220 can be inserted into the first positioning rod 3223, and the second positioning hole 3420 can be inserted into the second positioning rod 3423. In this embodiment, the first elastic member 327 and the second elastic member 347 are both springs, and the opposite ends of the first elastic member 327 are respectively connected to the two first support members 320, and the opposite ends of the second elastic member 347 are respectively connected to the two second support members 340. In other embodiments, the first elastic member 327 and the second elastic member 347 may be, but are not limited to, elastic rubber strips or elastic plastic strips.
[0047] like Figure 3-Figure 4 and Figure 6-Figure 8As shown, the first roller 52 includes a first roller 521 and first flanges 523 respectively arranged at opposite ends of the first roller 521, the first flanges 523 are arranged around the circumference of the first roller 521, the diameter of the first flanges 523 is larger than the diameter of the first roller 521, a circle of first receiving grooves 525 is formed between the two first flanges 523, the side of the layer 200 to be spread is accommodated in the first receiving grooves 525, the two first flanges 523 are suitable for rolling clamping the layer 200 to be spread, and the outer peripheral surface of the first roller 521 is suitable for rolling against the layer 200 to be spread; the second roller 54 includes a second roller 541 and second flanges 543 respectively arranged at opposite ends of the second roller 541, the second flanges 543 are arranged around the second roller 541 The roller 541 is provided with a circle in the circumference direction, the diameter of the second flange 543 is larger than the diameter of the second roller 541, a circle of second receiving grooves 545 is formed between the two second flanges 543, the side of the layer 200 to be spread is accommodated in the second receiving grooves 545, the outer peripheral surface of the second roller 541 is suitable for rolling against the layer 200 to be spread, and the two second flanges 543 are suitable for rolling clamping the layer 200 to be spread; the outer peripheral surface of the first roller 521 and / or the outer peripheral surface of the second roller 541 are provided with a circle of gears 5210 evenly arranged, when the first roller 521 and / or the second roller 541 roll relative to the layer 200 to be spread, the gears 5210 can make the first roller 521 and / or the second roller 541 vibrate. In this embodiment, the gear 5210 is designed to have eight equally divided teeth around a circle, and uniform vibration is generated by the rolling of the teeth relative to the layer 200 to be spread, and the vibration frequency is stable at a fixed running speed.
[0048] In other embodiments, the gear 5210 may be designed with, but not limited to, six equally divided teeth, nine equally divided teeth, or ten equally divided teeth, etc. The first roller 521 and the second roller 541 may be made of, but not limited to, hard plastic or metal.
[0049] Optionally, the first flange 523 is provided with a first avoidance groove 5232 on the side facing the first roller 521, and the second flange 543 is provided with a second avoidance groove 5432 on the side facing the second roller 541. The first avoidance groove 5232 and the second avoidance groove 5432 can prevent the first flange 523 and the second flange 543 from damaging the gravel layer on the to-be-spread layer 200. In this embodiment, the first flange 523 is provided with an inclined surface on the side facing the first roller 521 to form the first avoidance groove 5232; the second flange 543 is provided with an inclined surface on the side facing the second roller 541 to form the second avoidance groove 5432.
[0050] The first roller 521 is provided with a first rotating shaft hole 526 along its axis, and the opposite ends of the first rotating shaft hole 526 respectively penetrate the opposite end surfaces of the first roller 52; the opposite ends of the first roller 52 are provided with first mounting holes 527 around the first rotating shaft hole 526, and the first rotating shaft hole 526 and the two first mounting holes 527 are coaxial, and the inner diameter of the first mounting hole 527 is larger than the inner diameter of the first rotating shaft hole 526, and the first mounting hole 527 is connected to the first rotating shaft hole 526. The first roller 521 also includes two first bearings 528, and the two first bearings 528 are respectively positioned in the two first mounting holes 527 of the first roller 521. The second roller 541 is provided with a second rotating shaft hole 546 along its axis, and the opposite ends of the second rotating shaft hole 546 respectively penetrate the opposite end surfaces of the second roller 54; the opposite ends of the second roller 54 are respectively provided with second mounting holes 547 around the second rotating shaft hole 546, the second rotating shaft hole 546 and the two second mounting holes 547 are coaxial, the inner diameter of the second mounting hole 547 is larger than the inner diameter of the second rotating shaft hole 546, and the second mounting hole 547 is connected to the second rotating shaft hole 546. The second roller 541 also includes two second bearings 548, and the two second bearings 548 are respectively positioned in the two second mounting holes 547 of the second roller 541.
[0051] like Figure 3 and Figure 4 As shown, first sleeves 73 are respectively provided at two opposite ends of one side of the sand bucket 70, and second sleeves 74 are respectively provided at two opposite ends of the other side of the sand bucket 70. The inner diameter of the first sleeve 73 is slightly larger than the diameter of the first rotating rod 321 to facilitate the insertion or removal of the first rotating rod 321 from the first sleeve 73; the inner diameter of the second sleeve 74 is slightly larger than the diameter of the second rotating rod 341 to facilitate the insertion or removal of the second rotating rod 341 from the second sleeve 74; the two first rotating rods 321 are respectively rotatably inserted in the two first sleeves 73, and the two second rotating rods 341 are respectively rotatably inserted in the two second sleeves 74. The axis of the first sleeve 73 is parallel to the axis of the second sleeve 74, and the axis of the first sleeve 73 is parallel to the axis of the first roller 52; the sand bucket 70 includes a rectangular bottom plate 71, two inclined plates 75 and two end plates 76, the two inclined plates 75 are connected to the opposite sides of the bottom plate 71, and the two end plates 76 are connected to the opposite ends of the bottom plate 71. The bottom plate 71, the two inclined plates 75 and the two end plates 76 together form a funnel-shaped storage space 77.
[0052] Optionally, the first sleeve 73 and the second sleeve 74 on each end plate 76 are located on opposite sides of the middle of the end plate 76. In this embodiment, the sand hopper 70 adopts an inverted trapezoidal structure, which is made by bending and welding a stainless steel plate with a thickness of about 1 mm. The upper part of the sand hopper 70 is completely open, and the bottom of the sand hopper 70 is slotted and provided with an 8mm width edge inner bend to support the sand leakage screen 72. Specifically, the end plate 76 is an isosceles trapezoidal plate, wherein the opposite ends of one inclined plate 75 are respectively connected to the waist edge on the same side of the two end plates 76, the opposite ends of the other inclined plate 75 are respectively connected to the waist edge on the opposite side of the two end plates 76, and the bottom plate 71 is connected to the lower bottom edge of the two end plates 76 and the side edge of the two inclined plates 75. The bottom plate 71 is provided with a through slot 712 connected to the storage space 77, so as to form a rectangular inner folded edge around the through slot 712 of the bottom plate 71; optionally, the width of the inner folded edge is set to about 8 mm. The sand leakage screen 72 is accommodated in the storage space 77, and the inwardly folded edge of the bottom plate 71 supports the sand leakage screen 72. In this embodiment, the first sleeve 73 and the second sleeve 74 on each end plate 76 are equidistantly distributed on opposite sides of the sand hopper 70 along the width of the end plate 76 to ensure that the sand hopper 70 can evenly receive the vibration of the first roller 52 and the second roller 54.
[0053] Optionally, the sand leakage screen 72 is a separate mesh plate, and the sand leakage screen 72 includes a lap frame 721 and a screen 723 arranged in the inner cavity of the lap frame 721. The inner folded edge of the bottom plate 71 is used to support the lap frame 721, so that the screen 723 is directly opposite to the through slot 712. In this embodiment, the lap frame 721 is a rectangular frame, the length of the lap frame 721 is greater than the length of the through slot 712, and the width of the lap frame 721 is greater than the width of the through slot 712; the length of the inner cavity of the lap frame 721 is equal to or slightly less than the length of the through slot 712, and the width of the inner cavity of the lap frame 721 is equal to or slightly less than the width of the through slot 712. Optionally, the screen 723 is made of a sand mesh one level larger than the required grit mesh number, so that the sand bucket 70 can smoothly drop the grit when vibrating; the lap frame 721 is pressed with a 7 mm wide stainless steel bar to form a rectangular ring frame. The selection of the screen 723 of the sand leakage screen 72 must be adapted to the mesh size of the gravel. The degree of adaptation of the screen 723 is such that when the spreading device 100 is stationary and the sand bucket 70 is fully filled with gravel, the gravel will not automatically pass through the screen 723, and when the spreading device 100 is running, the gravel will fall evenly according to the desired effect.
[0054] like Figure 1-Figure 5As shown, when assembling the spreading device 100, the two first bearings 528 are respectively positioned at the two first mounting holes 527 at opposite ends of each first roller 52, and the two second bearings 548 are respectively positioned at each second mounting hole 547. The first support rod 322 of one of the first support members 320 is inserted into the inner cavity of the first bearing 528 and the first rotating shaft hole 526 on one of the first rollers 52, so that the two first positioning holes 3220 respectively expose the two first bearings 528, and then the two first positioning rods 3223 are respectively inserted into the two first positioning holes 3220; the first support rod 322 of another first support member 320 is inserted into the inner cavity of the first bearing 528 and the first rotating shaft hole 526 on another first roller 52, so that the two first positioning holes 3220 respectively expose the two first bearings 528, and then the two first positioning rods 3223 are respectively inserted into the two first positioning holes 3220. Insert the second support rod 342 of one of the second support members 340 into the inner cavity of the second bearing 548 and the second rotation shaft hole 546 on one of the second rollers 54, so that the two second positioning holes 3420 respectively expose the two second bearings 548, and then insert the two second positioning rods 3423 into the two second positioning holes 3420 respectively; insert the second support rod 342 of another second support member 340 into the inner cavity of the second bearing 548 and the second rotation shaft hole 546 on another second roller 54, so that the two second positioning holes 3420 respectively expose the two second bearings 548, and then insert the two second positioning rods 3423 into the two second positioning holes 3420 respectively. Slidably insert the first connecting rods 324 of the two first support members 320 into the two first guide sliding holes 3282 at opposite ends of the first handle 328, and slidably insert the second connecting rods 344 of the two second support members 340 into the two second guide sliding holes 3482 at opposite ends of the second handle 348. The opposite ends of the first elastic member 327 are respectively connected to the first connection portions 323 of the two first support members 320 , and the opposite ends of the second elastic member 347 are respectively connected to the second connection portions 343 of the two second support members 340 .The sand leakage screen 72 is placed in the storage space 77 of the sand hopper 70, and the lap frame 721 of the sand leakage screen 72 is bonded to the inner folded edge of the bottom plate 71 by adhesive, so that the sand leakage screen 72 is fixedly connected to the sand hopper 70, and the screen 723 is directly opposite to the through groove 712 to ensure that the sand leakage screen 72 will not be deformed by external force, and to avoid uneven force on the sand leakage screen 72 affecting the uniformity of sand leakage; the sand hopper 70 is placed between the two first support members 320, so that the first rotating rods 321 of the two first support members 320 are rotatably inserted into the two first sleeves 73, and the first rotating rods 321 of the two second support members 340 are rotatably inserted into the two first sleeves 73, respectively. The two rotating rods 341 are rotatably inserted into the two second sleeves 74 respectively; the sand receiving plate 90 is placed on the supporting rods 325 of the two first supporting members 320, so that the two first supporting members 320 are respectively positioned in the two limiting grooves 92; the sand receiving plate 90 is used for temporarily receiving sand when the sand bucket 70 is loaded with sand, because when the sand is loaded into the storage space 77 of the sand bucket 70, part of the gravel will leak from the screen 723 to the layer 200 to be spread, causing the local surface sand on the layer 200 to be spread to cause the surface flatness problem. The use of the sand receiving plate 90 can prevent too much sand from falling onto the surface of the layer 200 to be spread when the sand bucket 70 is loaded with sand.
[0055] At this time, a pair of first rollers 52 and a pair of second rollers 54 can support the support frame 30 and the sand bucket 70; the first handle 328 is connected between the two first connecting rods 324 along its axial sliding, and the first elastic member 327 is elastically pulled between the two first connecting parts 323; the second handle 348 is connected between the two second connecting rods 344 along its axial sliding, and the second elastic member 347 is elastically pulled between the two second connecting parts 343. In addition to being provided for the user to hold, the first handle 328 and the second handle 348 can also limit the minimum distance between the pair of first support members 320 of the first bracket 32 and the pair of second support members 340 of the second bracket 34, so as to ensure that the spacing between the pair of first rollers 52 and the spacing between the pair of second rollers 54 are slightly smaller than the width of the layer 200 to be spread, so as to avoid excessive resistance when the spreading device 100 is in place. That is, the first elastic member 327 and the second elastic member 347 can tighten the distance between the pair of first rollers 52 and the distance between the pair of second rollers 54, so that the pair of first rollers 52 and the pair of second rollers 54 can clamp the opposite sides of the layer 200 to be spread in the horizontal direction, and can keep adapting to the width change when the spreading device 100 moves relative to the layer 200 to be spread. The first rotating rod 321 is inserted into the first sleeve 73, and the second rotating rod 341 is inserted into the second sleeve 74, so that the vibration generated by the first roller 52 and the second roller 54 can be directly transmitted to the sand hopper 70 through the first support member 320 and the second support member 340. The sand receiving plate 90 is located below the sand leakage screen 72, and the positive projection of the sand leakage screen 72 on the upper surface of the sand receiving plate 90 is located within the edge contour of the sand receiving plate 90.
[0056] like Figure 1-Figure 3 and Figure 9-11 As shown, when using the spreading device 100, align the pair of first rollers 52 of the first bracket 32 with the end of the layer 200 to be spread, hold the second handle 348 and push the spreading device 100 toward the layer 200 to be spread, and apply a driving force to make the first rollers 52 of the pair of first support members 320 rotate relative to the sand bucket 70 respectively, so that the pair of first rollers 52 are spaced apart and clamped on both sides of the layer 200 to be spread; continue to push the second handle 348, so that the pair of second rollers 54 of the second bracket 34 are spaced apart and clamped on both sides of the layer 200 to be spread, until the layer 200 to be spread is clamped between the second cylinders 541 of the pair of second rollers 54. A pair of first flanges 523 of each first roller 52 and a pair of second flanges 543 of each second roller 54 are clamped on the upper and lower sides of the layer 200 to be spread, so that the first roller 52 and the second roller 54 can be stuck on both sides of the layer 200 to be spread, and the paving device 100 can be prevented from falling off from the layer 200 to be spread during operation, so as to ensure the normal operation of the paving device 100; when the second rollers 541 of the pair of second rollers 54 of the paving device 100 are aligned with the end edges of the layer 200 to be spread, the sand receiving plate 90 is placed on the supporting rods 325 of the pair of first supporting members 320, and the surface sand material is filled into the storage space 77 of the sand bucket 70. The filling amount of gravel in the storage space 77 is about 2 / 3 of the height of the storage space 77 of the sand bucket 70, so as to avoid excessive filling amount affecting the vibration effect of the paving device 100 during operation. After the sand hopper 70 is loaded with sand, the sand receiving plate 90 is removed, and the surface sand on the sand receiving plate 90 is poured into the storage space 77 of the sand hopper 70. During this operation, the sand receiving plate 90 must be prevented from bumping against the spreading device 100 to cause vibration. After the above operation is completed, the spreading device 100 is pushed to operate by holding the second handle 348, and the first roller 521 and the second roller 54 roll relative to the layer 200 to be spread respectively. The teeth of the first roller 521 and the teeth of the second roller 54 can generate a fixed rhythm of vibration when rolling, so that the support frame 30 and the sand hopper 70 vibrate evenly, and the gravel in the sand hopper 70 can be evenly spread on the layer 200 to be spread.
[0057] During the operation of the spreading device 100, the propulsion direction of the spreading device 100 should be controlled in a basically horizontal direction, and should not be propulsed diagonally upward, diagonally downward, or left or right, so as to avoid the phenomenon that uneven vibration affects the uniformity of sand falling during operation. The pushing speed of the spreading device 100 during operation is controlled to be uniform. Preferably, the pushing speed is about 2 meters per second. If the amount of sand falling does not meet the expected demand or exceeds the expected demand by too much, reasonable spreading can be achieved by adjusting the pushing speed of the spreading device 100 or adjusting the number of spreading times of the spreading device 100. The first avoidance groove 5232 of the first roller 52 and the second avoidance groove 5432 of the second roller 54 can prevent the first roller 52 and the second roller 54 from touching the mortar on the layer to be spread 200 during the operation of the spreading device 100, resulting in the phenomenon of damaging the surface forming of the anti-slip structure layer. The first elastic member 327 between the pair of first support members 320 of the paving device 100 and the second elastic member 347 passing between the pair of second support members 340 can achieve telescopic spacing, which can ensure that the pair of first rollers 52 and the pair of second rollers 54 are in contact with both sides of the layer 200 to be spread at any time, avoiding uneven vibration caused by idling of the first roller 52 and / or the second roller 54, so as to ensure that the uniform vibration of the first roller 52 and the second roller 54 can be transmitted to the support frame 30, so that the sand bucket 70 can receive the uniform vibration.
[0058] Compared with the existing manual sand spreading process, the spreading device 100 of the utility model utilizes the vibration generated by the first roller 52 and the second roller 54 to transmit the vibration to the sand bucket 70 through the support frame 30. After being vibrated, the sand bucket 70 drops sand through the sand leakage screen 72 to achieve the effect of evenly spreading sand and gravel on the layer 200 to be spread; and can realize the mechanization and standardization of the sand spreading operation, and the spreading is even and the spreading speed is fast, so that the sand spreading construction efficiency of the layer 200 to be spread is high, and the surface forming quality can meet the corresponding requirements.
[0059] In other embodiments, the outer circumferential surface of the first roller 521 and the outer circumferential surface of the second roller 541 are both smooth surfaces, and a vibrator is installed on the support frame 30 or on the sand bucket 70 to achieve uniform vibration of the sand bucket 70.
[0060] The embodiments of the present invention are described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea.
Claims
1. A spreading device for spreading sand on a layer to be spread, characterized in that: The spreading device comprises: A support frame, the support frame comprising a first support frame and a second support frame, the first support frame is arranged on one side of the paving device, and the second support frame is arranged on the other side opposite to the paving device; A guide roller assembly, the guide roller assembly comprising a first roller and a second roller, the first roller being rotatably connected to the first bracket, the second roller being rotatably connected to the second bracket, the first roller and the second roller supporting the support frame; and A sand hopper is connected to the first bracket and the second bracket, and the sand hopper includes a sand leakage screen arranged at the bottom thereof; when the first roller and the second roller roll relative to the layer to be spread, the vibration generated by the first roller and the second roller is transmitted to the sand hopper through the support frame.
2. The spreading device according to claim 1, characterized in that: The first bracket includes a pair of relatively spaced first support members and a first elastic member, the first elastic member is connected between the pair of first support members, and the first elastic member has an elastic force for pulling the pair of first support members closer to each other; the second bracket includes a pair of relatively spaced second support members and a second elastic member, the second elastic member is connected between the pair of second support members, and the second elastic member has an elastic force for pulling the pair of second support members closer to each other; the pair of first support members is connected to one side of the sand bucket, and the pair of second support members is connected to the other side of the sand bucket.
3. The spreading device according to claim 2, characterized in that: The first support member includes a first rotating rod and a first support rod, the first rotating rod is located at the top of the first support member, the first support rod is located at the bottom of the first support member, the first rotating rod is rotatably connected to the sand bucket, and the first roller is rotatably connected to the first support rod; the second support member includes a second rotating rod and a second support rod, the second rotating rod is located at the top of the second support member, the second support rod is located at the bottom of the second support member, the second rotating rod is rotatably connected to the sand bucket, and the second roller is rotatably connected to the second support rod; the first elastic member tightens a pair of the first support members so that the two first rollers can clamp the layer to be spread, and the second elastic member tightens a pair of the second support members so that the two second rollers can clamp the layer to be spread.
4. The spreading device according to claim 3, characterized in that: The first roller includes a first roller, and the outer peripheral surface of the first roller is suitable for rolling against the layer to be spread; the second roller includes a second roller, and the outer peripheral surface of the second roller is suitable for rolling against the layer to be spread; the outer peripheral surface of the first roller and / or the outer peripheral surface of the second roller are provided with gears evenly arranged in a circle, and when the first roller and / or the second roller roll relative to the layer to be spread, the gears can cause the first roller and / or the second roller to vibrate.
5. The spreading device according to claim 4, characterized in that: The first roller also includes first flanges respectively arranged at the opposite ends of the first roller, and the two first flanges are suitable for rolling clamping the layer to be spread; the second roller also includes second flanges respectively arranged at the opposite ends of the second roller, and the two second flanges are suitable for rolling clamping the layer to be spread.
6. The spreading device according to claim 5, characterized in that: A first avoidance groove is provided on the side of the first flange facing the first roller, and a second avoidance groove is provided on the side of the second flange facing the second roller.
7. The spreading device according to claim 3, characterized in that: The two opposite ends of one side of the sand bucket are respectively provided with first sleeves, the two opposite ends of the other side of the sand bucket are respectively provided with second sleeves, the two first rotating rods are respectively inserted into the two first sleeves, and the two second rotating rods are respectively inserted into the two second sleeves.
8. The spreading device according to claim 2, characterized in that: The first bracket also includes a first connecting rod, one end of which is connected to the first support member, the axial direction of the first connecting rod is perpendicular to the axial direction of the first roller, a first handle is provided between a pair of first connecting rods, and the opposite ends of the first handle are respectively slidably connected to the pair of first connecting rods; the second bracket also includes a second connecting rod, one end of which is connected to the second support member, the axial direction of the second connecting rod is perpendicular to the axial direction of the second roller, a second handle is provided between the pair of second connecting rods, and the opposite ends of the second handle are respectively slidably connected to the pair of second connecting rods.
9. The spreading device according to claim 8, characterized in that: The first bracket also includes a supporting rod, one end of which is connected to the first supporting member, and the other end of which is close to the second supporting member; the spreading device also includes a sand receiving plate, and the supporting rods of the pair of first supporting members support the sand receiving plate, and the sand receiving plate is located below the sand leakage screen, and the orthographic projection of the sand leakage screen on the upper surface of the sand receiving plate is located within the edge contour of the sand receiving plate.
10. The spreading device according to claim 9, characterized in that: The lower surface of the sand receiving plate is provided with limiting grooves at two opposite ends, and the two supporting rods are supported on the two limiting grooves respectively.