Scraper conveyor

Abstract

The utility model discloses a scraper and belongs to the technical field of scrapers. The scraper machine comprises a machine frame, a conveying device and a driving device, wherein the machine frame comprises a head machine frame, a middle machine frame and a tail machine frame; the driving assembly is arranged on the rack, provides power for the operation of the scraper conveyor, and comprises a transmission chain, a driving wheel and a driven wheel; the transmission chain is wound on the driving wheel and the driven wheel; the scraper blade assembly comprises at least one scraper blade and a connector; the scraping plate is connected with the transmission chain through a connector; the material blocking device further comprises a material blocking plate arranged above the driving wheel, the longitudinal projection of the material blocking plate can cover at least part of the driving wheel with the transverse thickness H and the longitudinal diameter D, part of materials are prevented from falling onto the driving wheel and / or a groove of the driving wheel, and the situation that the materials fill and / or adhere to the groove of the driving wheel is avoided. The transmission chain is tightly attached to the groove of the driving wheel, friction force is increased, effective driving of the transmission chain is achieved, and transmission efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of material scraping machine, more specifically, relate to a scraper, can be applicable to the narrow installation space of the height of return belt and ground not more than 300mm. BACKGROUND

[0002] The scraper series products are widely applicable to the metallurgy, building material, electric power, chemical industry, cement, port, wharf, coal, mine, grain and oil, food, feed and the like industry and department. The scraper is a kind of continuous conveying equipment that is transported in the closed rectangular section shell by the aid of moving scraper chain. The machine is simple in structure, good in sealing, convenient in installation and maintenance, flexible in process layout. It can not only be horizontally conveyed, but also be inclined or vertically conveyed. It can be used alone or jointly used with multiple machines. It can be multi-point fed and multi-point discharged. As the shell is closed, the working environment of workers and environmental pollution can be improved when conveying large, toxic, explosive and high-temperature materials.

[0003] According to the search, the scraper disclosed in Chinese patent CN210479896U includes a driving assembly for providing power for the operation of the scraper, which includes a speed reducer motor, two transmission chains, two driving wheels and two driven wheels. The transmission chain is wound around the driving wheel and the driven wheel, and the transmission chain and the driving wheel are matched through the groove provided on the driving wheel. However, due to the use environment of the scraper itself, part of the material will fall onto the driving wheel and into the groove. Especially when the groove is accumulated with some viscous and hardening materials, the cooperation between the transmission chain and the groove will be affected, which not only affects the transmission efficiency, but also easily causes the transmission chain to deviate. In severe cases, the transmission chain will be off. SUMMARY

[0004] 1. Problem to be solved

[0005] In view of the technical problems existing in the prior art, the utility model provides a scraper, which reduces the material falling onto the driving wheel and into the groove, and solves the problem of deviation or off of the transmission chain.

[0006] 2. Technical scheme

[0007] In order to solve the above problems, the utility model adopts the following technical scheme:

[0008] The utility model discloses a scraper, which comprises:

[0009] A rack, comprising a head rack, a middle rack and a tail rack; the head rack is connected with one end of the middle rack, a driving shaft seat is arranged in the head rack, and a driving shaft is arranged in the driving shaft seat; the tail assembly comprises a tail rack, the tail rack is connected with the end of the middle rack away from the head rack, a driven shaft seat is arranged in the tail rack, and a driven shaft is arranged in the driven shaft seat;

[0010] A driving assembly arranged on the rack and providing power for the operation of the scraper, comprising a power source, a transmission chain, a driving wheel and a driven wheel; the power source is arranged on the outside of the head rack, and the power source drives the driving shaft; the driving wheel is connected with the driving shaft, and the driven wheel is connected with the driven shaft; the transmission chain is arranged around the driving wheel and the driven wheel; the power source comprises but is not limited to a speed reducer motor, a hydraulic motor, a speed reducer motor-universal coupling and the like.

[0011] A tensioning assembly arranged at the end of the head rack and connected with the driving shaft seat, comprising a screw rod and a nut adjusting seat; the screw rod extends into the head rack from the end of the head rack and is connected with the driving shaft seat, and the nut adjusting seat is arranged on the outside of the head rack and connected with the screw rod;

[0012] A scraper assembly, comprising at least one scraper; the scraper is connected with the transmission chain through a connecting head; the scraper comprises an arch breaking scraper and / or a flat scraper;

[0013] A material blocking plate arranged above the driving wheel, and the longitudinal projection of the material blocking plate can cover at least part of the driving wheel with a transverse thickness H and a longitudinal diameter D, so as to block part of the material from falling onto the driving wheel and / or into the groove (annular groove and circular arc groove) of the driving wheel.

[0014] The above-mentioned covering indicates that at least 60% of the normal projection of the material blocking plate falls onto the driving wheel in the longitudinal projection direction, in addition, the scraper of the utility model is suitable for a narrow space with a height of not more than 300 mm, and the material falling is blocked by the material blocking plate, so as to reduce the possibility of falling onto the driving wheel, thereby avoiding the filling and / or adhesion of the material to the groove of the driving wheel, so that the transmission chain is closely attached to the groove of the driving wheel, on the one hand, the friction force is increased, the effective driving of the transmission chain is realized, and the transmission efficiency is improved; on the other hand, the transmission chain is not prone to deviation or chain separation. In addition, it is found through a large number of uses that the utility model can solve the problem that when one side of the driving wheel is filled, the transmission chain on the same side deviates, one end of the scraper assembly connected with the transmission chain is stressed and inclined, and the use effect of the scraper assembly is affected.

[0015] According to any embodiment of the first aspect of the utility model purposes, the length of the normal projection of the material baffle in the longitudinal projection direction is L, the normal projection width is S, the normal projection length L is greater than or equal to the longitudinal diameter D of the driving wheel, and the normal projection width S is greater than or equal to the transverse thickness H of the driving wheel.Under the premise of satisfying at least 60% normal projection falling on the driving wheel, the material baffle is located directly above the driving wheel, at this time, the normal projection length L and the width S of the material baffle can be equal to the longitudinal diameter D and the transverse thickness H of the driving wheel, and the design can theoretically achieve 100% coverage of the driving wheel by the normal projection of the material baffle, and due to the installation error, the normal projection of the material baffle can only approach 100% coverage of the driving wheel.

[0016] When the material baffle is located directly above the driving wheel, and the normal projection length L and the width S of the material baffle are greater than the longitudinal diameter D and the transverse thickness H of the driving wheel, in this case, the material baffle can achieve the effect of 100% coverage of the driving wheel.

[0017] According to any embodiment of the first aspect of the utility model purposes, the material baffle comprises two flat plates, the two flat plates are respectively corresponding to two driving wheels and are horizontally arranged above the driving wheels, and / or the two flat plates are fixed on the head rack, preferably, the two flat plates are symmetrically fixed on the head rack, the structure of the material baffle is simple, and the material baffle is easy to manufacture.

[0018] According to any embodiment of the first aspect of the utility model purposes, in the longitudinal projection direction, the edge of the width of the flat plate exceeds the profile end surface of the driving wheel, and the width of the exceeding part is 5-20mm, which can reduce the possibility of part of the material falling on the driving wheel.

[0019] According to any embodiment of the first aspect of the utility model purposes, at least one flat plate is welded on the head rack, and / or at least one flat plate is fixed on the head rack through a fastener (bolt and / or screw), which simplifies the installation of the flat plate and does not occupy too much space (relative height is below 300mm).

[0020] According to any embodiment of the first aspect of the purpose of the utility model, the material baffle plate includes a flat plate, the flat plate is arranged above the driving wheel and is fixed at both ends with the head frame, the flat plate is simple to manufacture and convenient to install, and the covering rate in the width H direction is ensured, and at the same time, it is found through a large number of uses that since the rotating speed of the driving shaft of the utility model is slow, the adhesion of the material is small under the action of centrifugal force, the centrifugal force cannot be used to separate the driving shaft, and the material adhesion will cause corrosion on its surface, especially some acidic materials, since the driving shaft is acted on by the transmission chain and the power source, in a high-temperature and high-humidity environment, surface corrosion will gradually produce cracks inside the driving shaft, and finally lead to the fracture of the driving shaft, the integral material baffle plate of the utility model can reduce the material falling on the driving shaft, and thus avoid the phenomenon of material adhesion leading to corrosion and fracture of the driving shaft.

[0021] According to any embodiment of the first aspect of the purpose of the utility model, the both ends of the flat plate are welded on the head frame, and / or the both ends of the flat plate are fixed on the head frame through fasteners (bolts and / or screws).

[0022] According to any embodiment of the first aspect of the purpose of the utility model, the material baffle plate has an arc-shaped head extending along the circular arc-shaped movement track A of the scraper assembly, the inner side contour line of the arc-shaped head is located outside the circular arc-shaped movement track A, and a gap F is formed between the two, which not only provides a discharge channel for the material adhered to the broken-arch scraper and / or flat scraper, but also provides a avoiding space for the adjustment of the tensioning assembly, which can avoid the interference problem between the scraper assembly and the material baffle plate to a certain extent.

[0023] It should be noted that for some materials, the materials falling on the material baffle plate will form accumulation or move to the non-fixed side of the material baffle plate, therefore, the material baffle plate is designed to have an arc-shaped head, and the materials will slide along the arc-shaped head under vibration, effectively reducing the accumulation, especially wet materials, which will fall to the bottom along the arc-shaped head.

[0024] Through a large number of field uses, the above design not only meets the use requirements, but also reduces the material accumulation, and has good use effect.

[0025] According to any embodiment of the first aspect of the utility model purposes, in longitudinal projection direction, the end surface of the arc head is located between the outer circle contour line of the driving wheel and the circular arc motion track A of the scraper assembly, so that the orthogonal projection length L of the material baffle in the longitudinal projection direction is greater than the longitudinal diameter D of the driving wheel, and L=(1.01-1.5)*D is satisfied, specifically, L=1.01D, L=1.02D, L=1.03D, L=1.04D, L=1.05D, L=1.06D, L=1.07D, L=1.08D, L=1.09D, L=1.10D, L=1.11D, L=1.12D, L=1.13D, L=1.14D, L=1.15D, L=1.16D, L=1.17D, L=1.18D, L=1.19D, L=1.20D, L=1.21D, L=1.22D, L=1.23D, L=1.24D, L=1.25D, L=1.26D, L=1.27D, L=1.28D, L=1.29D, L=1.30D, L=1.31D, L=1.32D, L=1.33D, L=1.34D, L=1.35D, L=1.36D, L=1.37D, L=1.38D, L=1.39D, L=1.40D, L=1.41D, L=1.42D, L=1.43D, L=1.44D, L=1.45D, L=1.46D, L=1.47D, L=1.48D, L=1.49D, L=1.5D.

[0026] Fully consider the relationship between the driving shaft and the tensioning assembly, in other words, the position of the driving shaft is not completely fixed, therefore, the flat plate needs to extend to both sides in the length direction (orthogonal projection length L) to ensure the comprehensiveness of covering.

[0027] According to any embodiment of the first aspect of the purpose of the utility model, in the longitudinal projection direction, the arc head extends outward beyond the circular arc motion track A of the scraper assembly, so that the orthogonal projection length of the material baffle in the longitudinal projection direction is L, which is greater than the longitudinal diameter D of the driving wheel, and satisfies L=(1.51-2.0)*D, specifically L=1.51D, L=1.52D, L=1.53D, L=1.54D, L=1.55D, L=1.56D, L=1.57D, L=1.58D, L=1.59D, L=1.60D, L=1.61D, L=1.62D, L=1.63D, L=1.64D, L=1.65D, L=1.66D, L=1.67D, L=1.68D, L=1.69D, L=1.70D, L=1.71D, L=1.72D, L=1.73D, L=1.74D, L=1.75D, L=1.76D, L=1.77D, L=1.78D, L=1.79D, L=1.80D, L=1.81D, L=1.82D, L=1.83D, L=1.84D, L=1.85D, L=1.86D, L=1.87D, L=1.88D, L=1.89D, L=1.90D, L=1.91D, L=1.92D, L=1.93D, L=1.94D, L=1.95D, L=1.96D, L=1.97D, L=1.98D, L=1.99D, L=2.0D.

[0028] According to any embodiment of the first aspect of the purpose of the utility model, the arc radius R1 of the arc head is greater than the arc radius R2 of the circular arc motion track A of the scraper assembly, avoiding interference between the material baffle and the scraper assembly, thereby reducing the wear of the material baffle.

[0029] According to any embodiment of the first aspect of the purpose of the utility model, the flat plate is made of a metal plate or a hard material plate with uniform thickness, and the thickness of the metal plate or the hard material plate is 3-10mm, preferably 5mm; the metal plate includes but is not limited to a steel plate, an aluminum alloy plate or a titanium alloy plate; the hard material plate includes but is not limited to a non-metal ceramic plate, a hard plastic plate or a hard wood plate. The selection of the above-mentioned materials not only has good wear resistance and high strength, but also ensures the service life of the flat plate.

[0030] According to any embodiment of the first aspect of the purpose of the utility model, the flat plate is flush with the upper end surface of the head rack, facilitating the cleaning of the material that may be accumulated on the flat plate.

[0031] According to any embodiment of the first aspect of the utility model purposes, the arc head is a free end, which can not be fixed, so that the design can make full use of the vibration of the scraper itself, and the free end will vibrate to accelerate the material to slide along the arc surface.

[0032] The utility model provides a kind of scraper secondly, comprising:

[0033] Frame, it includes head frame, middle frame and tail frame;

[0034] Driving assembly is arranged on the frame, and power is provided for the operation of scraper, and it includes power source, transmission chain, driving wheel and driven wheel;The power source is arranged on the outside of head frame, and the power source drives driving shaft;The driving wheel is connected with driving shaft, and the driven wheel is connected with driven shaft;The transmission chain is arranged on the driving wheel and driven wheel;The power source includes but is not limited to speed reducer motor, hydraulic motor, speed reducer motor-universal coupling etc.

[0035] Scraper assembly, it includes at least one scraper;The scraper is connected with transmission chain by connecting head;

[0036] Material baffle is arranged above the driving wheel, and the material baffle has a material baffle face, and at least part of material falling trajectory B on the driving wheel passes through the material baffle face.

[0037] According to any embodiment of the second aspect of the utility model purposes, the material baffle extends to the outside of the driving wheel to form arc head, and the inside profile line of the arc head is located outside the circular arc motion trajectory A of the scraper assembly, and gap F is formed between the two, which not only provides a discharge channel for the material adhered to the broken arch scraper and / or flat scraper, but also provides a avoiding space for the adjustment of tensioning assembly, which can avoid the interference problem between the scraper assembly and the material baffle to some extent.

[0038] It should be noted that, for some materials, the materials fall on the material baffle and form accumulation or move to the non-fixed side of the material baffle, so the material baffle is designed to have arc head, and the materials will slide along the arc head under vibration, effectively reducing the accumulation, especially wet materials, which will fall to the bottom along the arc head.

[0039] Through a large number of field use, the above design not only meets the use requirement, but also reduces material accumulation, and the use effect is better.

[0040] According to any embodiment of the second aspect of the utility model purposes, the material baffle is of integral structure, which can reduce the material falling on the driving shaft, and further avoid the phenomenon that the driving shaft is corroded and broken due to material adhesion;Or, the material baffle is of split structure, and the processing and manufacturing are simple.

[0041] According to any embodiment of the second aspect of the present invention, the material blocking surface and the surface of the arc-shaped head are smoothly transitioned. For some wet materials, the smooth transition can reduce the resistance to movement, thereby making the wet materials easier to slide off.

[0042] 3. Beneficial effects

[0043] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0044] (1) In the scraper conveyor of this utility model, the longitudinal projection of the baffle plate can cover at least part of the drive wheel with a transverse thickness H and a longitudinal diameter D, preventing part of the material from falling onto the drive wheel and / or into the groove of the drive wheel, so that the transmission chain fits tightly with the groove of the drive wheel. On the one hand, it increases the friction force, realizes the effective driving of the transmission chain, and improves the transmission efficiency; on the other hand, the transmission chain is less likely to run off track or derail.

[0045] (2) In the scraper conveyor of this utility model, the positions of the drive shaft and drive assembly of the drive wheel part can be adjusted relative to each other. The transmission chain is installed during assembly and the tension of the transmission chain is adjusted during use. The drive shaft seat can be easily adjusted through the tensioning assembly. The tension of the transmission chain can be adjusted as needed to ensure normal operation of the equipment and improve material conveying efficiency.

[0046] (3) In the scraper conveyor of this utility model, the baffle plate extends outward to the outside of the drive wheel to form an arc-shaped head. For some materials, these materials fall onto the baffle plate and will accumulate or move to the non-fixed side of the baffle plate. Therefore, the baffle plate is designed to have an arc-shaped head. These materials will slide down along the arc-shaped head under vibration, effectively reducing accumulation. In particular, wet materials (materials with low viscosity) will fall to the bottom along the arc-shaped head. Attached Figure Description

[0047] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of this utility model. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0048] Figure 1 This is a schematic diagram of the drive wheel structure of a scraper conveyor according to the present invention;

[0049] Figure 2 This is a structural schematic diagram of a scraper conveyor according to the present invention;

[0050] Figure 3 for Figure 2 A cross-sectional view of the scraper conveyor along its length and the drive wheel;

[0051] Figure 4 This is a schematic diagram of the scraper assembly structure of the scraper machine of this utility model;

[0052] Figure 5 This is a schematic diagram of another scraper conveyor according to the present invention;

[0053] Figure 6 for Figure 5 A cross-sectional view of the scraper conveyor along its length and the drive wheel;

[0054] Figure 7 This is a schematic diagram of another scraper conveyor according to the present invention;

[0055] Figure 8 This is a schematic diagram of another scraper conveyor according to the present invention;

[0056] Figure 9 This is a schematic diagram of another scraper conveyor according to the present invention;

[0057] Figure 10 for Figure 9 A cross-sectional view of the scraper conveyor along its length and the drive wheel;

[0058] Figure 11 This is a schematic diagram of a material falling structure of the scraper conveyor of this utility model;

[0059] Figure 12 This is a schematic diagram of another material falling structure of the scraper conveyor of this utility model;

[0060] Figure 13 This is a diagram showing the usage state of the scraper conveyor of this utility model;

[0061] Figure 14 This is an installation cross-sectional view of the scraper conveyor of this utility model;

[0062] Figure 15 This is another installation cross-sectional view of the scraper conveyor of this utility model;

[0063] Explanation of reference numerals in the attached figures:

[0064] 10. Frame; 11. Head frame; 12. Middle frame; 13. Tail frame; 14. Drive shaft mount; 15. Drive shaft; 16. Driven shaft mount; 17. Driven shaft;

[0065] 20. Drive assembly; 21. Gear motor; 22. Drive chain; 23. Drive wheel; 231. Groove; 232. Outer circle contour line; 24. Driven wheel;

[0066] 30. Tensioning assembly; 31. Lead screw; 32. Nut adjusting seat;

[0067] 40. Scraper assembly; 41. Arch-breaking scraper; 42. Flat scraper; 43. Connector; 44. Arc-shaped motion trajectory A;

[0068] 50. Baffle plate; 51. Baffle surface; 52. Arc-shaped head;

[0069] 60. Material; 61. Movement trajectory B;

[0070] 70. Adhesive tape. Detailed Implementation

[0071] The following detailed description of exemplary embodiments of the present invention refers to the accompanying drawings, which form part of the description, illustrating exemplary embodiments in which the present invention may be implemented. Although these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope thereof. The more detailed description of embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to suggest the best mode for carrying out the invention and sufficient to enable those skilled in the art to implement it. Therefore, the scope of the present invention is defined only by the appended claims.

[0072] The following detailed description and exemplary embodiments of the present invention can be better understood in conjunction with the accompanying drawings, wherein the elements and features of the present invention are identified by reference numerals.

[0073] like Figures 1 to 12 As shown, the scraper conveyor of this embodiment includes a frame 10, a drive assembly 20, a tensioning assembly 30, a scraper assembly 40, and a baffle plate 50 disposed on the frame.

[0074] The frame 10 includes a head frame 11, a middle frame 12, and a tail frame 13. The head frame 11 is connected to one end of the middle frame 12. The head frame 11 is provided with a drive shaft seat 14, and a drive shaft 15 is installed in the drive shaft seat 14. The tail assembly includes a tail frame 13, which is connected to the end of the middle frame 12 away from the head frame 11. The tail frame 13 is provided with a driven shaft seat 16, and a driven shaft 17 is installed in the driven shaft seat 16.

[0075] In some embodiments of this utility model, the central frame 12 is a rectangular frame structure with three pairs of guide wheels located at both ends and the middle of the central frame 12. The guide wheels are in contact with the transmission chain 22, providing support to prevent the transmission chain 22 from sinking and avoiding vibration during operation. Multiple central frames 12 can be assembled and used to change the overall length of the scraper conveyor, thereby increasing its conveying distance.

[0076] Furthermore, in some embodiments of this utility model, the central frame 12 is a rectangular frame structure, on which a guide plate (not shown in the figure) can be installed. The guide plate is provided with a guide groove, which cooperates with the vertical chain link of the transmission chain 22 to support the transmission chain 22 and prevent the transmission chain 22 from sinking.

[0077] Combination Figure 2 As shown, the drive assembly 20 provides power for the operation of the scraper conveyor, and includes a geared motor 21, two transmission chains 22, two drive wheels 23, and two driven wheels 24. The geared motor 21 is located on the outside of the head frame 11 and drives the drive shaft 15. The drive wheels 23 are connected to the drive shaft 15, and the driven wheels 24 are connected to the driven shaft 17. The transmission chains 22 are wound around the drive wheels 23 and the driven wheels 24. The transmission chains are circular links, which have high strength and good wear resistance.

[0078] like Figure 1 As shown, multiple annular grooves matching the links of the transmission chain 22 are evenly distributed along the circumferential direction on the outer circumferential surface of the drive wheel 23. An annular arc groove is opened in the middle of the width direction on the outer circumferential surface of the drive wheel 23. The annular groove and the arc groove are collectively referred to as grooves. When the transmission chain 22 is fitted onto the drive wheel 23, the transverse links of two adjacent links of the transmission chain 22 are engaged in the annular groove of the drive wheel 23, and the vertical links are supported in the arc groove of the drive wheel.

[0079] The scraper conveyor of this invention is placed at the head or tail of a belt. Materials on the belt, including dry materials, wet materials, powders, granules, etc., will fall, especially granules or wet materials. Wet materials will adhere to the arc groove of the drive pulley 23, and granules will fill the annular groove, etc., in combination. Figure 1 As shown, this reduces the contact area between the horizontal and vertical chain links and the arc groove and annular groove, making it very easy for the transmission chain 22 to become loose.

[0080] In this embodiment, as Figure 2As shown, the tensioning assembly 30 arranged at the end of the head frame 11 and connected with the driving shaft seat 14, which comprises a screw rod 31 and a nut adjusting seat 32; the screw rod 31 extends into the head frame 11 from the end of the head frame 11 and is connected with the driving shaft seat 14, and the nut adjusting seat 32 is arranged outside the head frame 11 and is connected with the screw rod 31.

[0081] The driving shaft and the driving assembly position can be adjusted relatively, the transmission chain is installed during assembly, and the tightness of the transmission chain is adjusted during use; and the adjustment of the driving shaft seat 14 can be conveniently realized through the tensioning assembly 30, the tightness of the transmission chain is adjusted according to needs, the normal operation of the equipment is ensured, and the material conveying efficiency is improved.

[0082] In the embodiment, as shown in the drawings, Figure 4 The scraper assembly 40 comprises at least one scraper and a connecting head 43 matched with the scraper; the two ends of the scraper are connected with the transmission chain 22 through the connecting head 43; and the scraper comprises an arch breaking scraper 41 and / or a flat scraper 42.

[0083] 1) the arch breaking scraper 41 comprises a front scraper and a rear scraper, the bottom of the front scraper and the rear scraper is provided with a toothed opening, a reinforcing plate is inserted between the two ends of the front scraper and the rear scraper, and the outside of the reinforcing plate is fixed with the connecting head through bolts; and 2) the flat scraper 42 comprises a scraper body and a toothless scraper, the two ends of the scraper body are welded with connectors, the two sides of the connectors are connected with the connecting head 43, the bottom of the scraper body is connected with the toothless scraper, and the scraper body comprises a front reinforcing plate, a rear reinforcing plate and a middle plate, the middle plate is welded in the middle of the front reinforcing plate and the rear reinforcing plate, and the front reinforcing plate, the rear reinforcing plate and the middle plate form an "H" type.

[0084] The arch breaking scraper 41 and the flat scraper 42 described above can be used alone or in combination. When used in combination, the toothed openings of the front scraper and the rear scraper are staggered, when the equipment moves, the arch breaking scraper 41 first breaks the arch to scatter the accumulated materials, and through the staggered arrangement, the double-row staggered toothed openings are arranged to avoid arch breaking limitation, maximize the breaking of the accumulated materials, the bottom end of the toothed opening is flush with the bottom end of the toothless scraper, and the remaining materials can be cleaned by moving the toothless scraper, thereby avoiding the floating chain problem caused by accumulation.

[0085] In combination Figure 2 , Figure 3 , Figures 5 to 10As shown, the material blocking plate 50 is arranged above the driving wheel 23, and the longitudinal projection of the material blocking plate 50 can cover at least part of the driving wheel 23 having a transverse thickness H and a longitudinal diameter D, so as to block the material 60 from falling onto the driving wheel 23 and / or into the groove 231 of the driving wheel 23. The above-mentioned covering at least 60% of the driving wheel indicates that the normal projection of the material blocking plate in the longitudinal projection direction falls onto the driving wheel, and the material falling will be blocked by the material blocking plate, so as to reduce the possibility of falling onto the driving wheel. Therefore, the material 60 is prevented from filling and / or adhering to the groove 231 of the driving wheel 23, so that the driving chain 22 closely fits the groove 231 of the driving wheel 23, the friction is increased, the effective driving of the driving chain 22 is realized, and the transmission efficiency is improved.

[0086] As shown in combination Figure 3 , Figure 6 and Figure 10 , the normal projection length of the material blocking plate 50 in the longitudinal projection direction is L, and the normal projection width is S. The normal projection length L is greater than or equal to the longitudinal diameter D of the driving wheel 23, and the normal projection width S is greater than or equal to the transverse thickness H of the driving wheel 23.

[0087] Under the premise of meeting the above-mentioned at least 60% of the normal projection falling onto the driving wheel, the material blocking plate 50 is located directly above the driving wheel 23. At this time, the normal projection length L and the width S of the material blocking plate 50 can be equal to the longitudinal diameter D and the transverse thickness H of the driving wheel. Such a design can theoretically achieve 100% coverage of the driving wheel by the normal projection of the material blocking plate. However, due to installation errors, the normal projection of the material blocking plate can only approach 100% coverage of the driving wheel.

[0088] When the material blocking plate 50 is located directly above the driving wheel 23, and the normal projection length L and the width S of the material blocking plate 50 are both greater than the longitudinal diameter D and the transverse thickness H of the driving wheel, the normal projection of the material blocking plate can achieve 100% coverage of the driving wheel.

[0089] In order to facilitate installation, the material blocking plate 50 comprises two flat plates, and the two flat plates are respectively arranged above the two driving wheels 23 and arranged horizontally above the driving wheels 23; and / or, the two flat plates are fixed on the head rack 11, and preferably, the two flat plates are symmetrically fixed on the head rack. The structure of the material blocking plate is simple and easy to manufacture.

[0090] In order to simplify the installation of the flat plate and not to occupy too much space (the installation and use height of the scraper machine is not more than 300 mm), at least one flat plate is welded on the head rack 11; and / or, at least one flat plate is fixed on the head rack 11 by fasteners (bolts and / or screws).

[0091] Further, in the longitudinal projection direction, the edge of the flat plate exceeds the profile end surface of the driving wheel 23, and the width of the exceeding part is 5-20 mm, which can reduce the possibility of the material falling on the driving wheel.

[0092] In actual use, as shown in Figure 8 and Figure 9 , in order to ensure the covering rate in the width H direction, and reduce the material falling on the driving shaft, thereby avoiding the phenomenon of corrosion and fracture of the driving shaft caused by the material adhesion, the material blocking plate 50 comprises a flat plate, which is arranged above the driving wheel 23 and fixed at both ends with the head rack 11. On the basis of the above structure, the both ends of the flat plate are welded on the head rack 11; and / or, the both ends of the flat plate are fixed on the head rack 11 by fasteners (bolts and / or screws).

[0093] In addition, through a large number of uses, it is found that due to the slow rotation speed of the driving shaft of the utility model, the adhesion of the material is small under the action of centrifugal force, and cannot be separated from the driving shaft by using centrifugal force. After the material adheres, corrosion will occur on its surface, especially some acidic materials. Due to the double action (tension and torque) of the driving chain and the power source, surface corrosion will gradually produce cracks inside the driving shaft in a high temperature and high humidity environment, and finally lead to the fracture of the driving shaft. The integral material blocking plate of the utility model can reduce the material falling on the driving shaft, thereby avoiding the phenomenon of corrosion and fracture of the driving shaft caused by the material adhesion.

[0094] In actual use, the scraper installed below the belt conveyor (the narrow space with a height H not more than 300 mm) of the utility model can be located at the head or tail of the belt conveyor (the head and tail are prone to material accumulation), as shown in Figure 13 and Figure 14 , the belt of the belt conveyor will be partially torn after a long time of use, and the torn part of the belt will rotate with the belt. In addition, some belts are provided with steel wires to increase the tensile strength of the belt. Since the distance between the scraper and the belt is small (the returning belt is generally laid flat), the belt will sag under the action of gravity, and the transmission chain of the scraper moves relative to the belt and the speed difference exists, Figure 14 , the arrows in the figure respectively represent the running directions of the belt and the transmission chain. Once the torn belt and the steel wire possibly existing in the belt fall into the groove of the driving wheel, they will be pressed by the transmission chain, causing the torn belt to be torn off, and even the steel wire forms secondary tearing of the belt, thereby accelerating the damage of the belt.

[0095] However, the material baffle 50 of the utility model can prevent the torn adhesive tape and the steel wire possibly existing in the adhesive tape from falling into the groove of the driving wheel, thereby effectively avoiding the torn adhesive tape from being torn again and the secondary tearing of the adhesive tape by the steel wire, and prolonging the service life of the adhesive tape.

[0096] In the embodiment, as shown in Figure 5 、 Figure 6 、 Figure 7 、 Figure 9 and Figure 10 , the material baffle 50 has an arc-shaped head 52 extending along the circular arc-shaped movement track A of the scraper assembly 40, the inner profile line of the arc-shaped head 52 is located outside the circular arc-shaped movement track A44, and a gap F is formed between the two. The gap F not only provides a discharge channel for the material adhered to the broken-arch scraper and / or the flat scraper, but also provides a avoiding space for the adjustment of the tensioning assembly, which can to some extent avoid the interference problem between the scraper assembly and the material baffle.

[0097] It should be noted that for some materials, the materials will form accumulation or move to the non-fixed side of the material baffle when falling on the material baffle, therefore, the material baffle is designed to have an arc-shaped head, and the materials will slide along the arc-shaped head under vibration, effectively reducing the accumulation, especially the wet materials, which will fall to the bottom along the arc-shaped head. Through a large number of field use, it is found that the above design not only meets the use requirements, but also reduces the material accumulation, and has good use effect.

[0098] Further, as shown in Figure 15 (arrowheads respectively represent the running directions of the adhesive tape and the transmission chain), when the adhesive tape and the transmission chain move relative to each other, the torn adhesive tape and the steel wire possibly existing in the adhesive tape can reduce the swinging amplitude under the blocking action of the arc-shaped head, and reduce the possibility of being clamped by the driving wheel and the transmission chain.

[0099] In addition, the utility model gives some embodiments, fully considering the relationship between the driving shaft and the tensioning assembly, the position of the driving shaft is not completely fixed and unchanged, therefore, the flat plate needs to be extended to both sides in the length direction (the length of the orthographic projection is L), to ensure the overall coverage.

[0100] In Figure 6In the longitudinal projection direction, the end surface of the arc-shaped head 52 is located between the outer circle contour line 232 of the driving wheel 23 and the circular arc-shaped movement track A of the scraper assembly 40, so that the length L of the front plate 50 in the longitudinal projection direction is greater than the longitudinal diameter D of the driving wheel 23, and L=(1.01-1.5)*D is satisfied. Specifically, L=1.01D, L=1.02D, L=1.03D, L=1.04D, L=1.05D, L=1.06D, L=1.07D, L=1.08D, L=1.09D, L=1.10D, L=1.11D, L=1.12D, L=1.13D, L=1.14D, L=1.15D, L=1.16D, L=1.17D, L=1.18D, L=1.19D, L=1.20D, L=1.21D, L=1.22D, L=1.23D, L=1.24D, L=1.25D, L=1.26D, L=1.27D, L=1.28D, L=1.29D, L=1.30D, L=1.31D, L=1.32D, L=1.33D, L=1.34D, L=1.35D, L=1.36D, L=1.37D, L=1.38D, L=1.39D, L=1.40D, L=1.41D, L=1.42D, L=1.43D, L=1.44D, L=1.45D, L=1.46D, L=1.47D, L=1.48D, L=1.49D, L=1.50D, preferably L=1.20D.

[0101] Further, in combination with Figure 10As shown, the arc-shaped head 52 extends outward beyond the circular arc movement track A44 of the scraper assembly 40 in the longitudinal projection direction, so that the orthogonal projection length L of the material baffle 50 in the longitudinal projection direction is greater than the longitudinal diameter D of the driving wheel 23, and L=(1.51-2.0)*D is satisfied. Specifically, L=1.51D, L=1.52D, L=1.53D, L=1.54D, L=1.55D, L=1.56D, L=1.57D, L=1.58D, L=1.59D, L=1.60D, L=1.61D, L=1.62D, L=1.63D, L=1.64D, L=1.65D, L=1.66D, L=1.67D, L=1.68D, L=1.69D, L=1.70D, L=1.71D, L=1.72D, L=1.73D, L=1.74D, L=1.75D, L=1.76D, L=1.77D, L=1.78D, L=1.79D, L=1.80D, L=1.81D, L=1.82D, L=1.83D, L=1.84D, L=1.85D, L=1.86D, L=1.87D, L=1.88D, L=1.89D, L=1.90D, L=1.91D, L=1.92D, L=1.93D, L=1.94D, L=1.95D, L=1.96D, L=1.97D, L=1.98D, L=1.99D, L=2.0D, preferably L=1.60D.

[0102] In addition, in order to avoid interference between the material baffle and the scraper assembly, thereby reducing the wear of the material baffle, as shown, Figure 10 As shown, the arc radius R1 of the arc-shaped head 52 is greater than the arc radius R2 of the circular arc movement track A44 of the scraper assembly 40.

[0103] The material baffle of the utility model is required to have good wear resistance, thereby ensuring the service life, and for this purpose, the flat plate is made of a metal plate or a hard material plate with consistent thickness, the thickness of the metal plate or the hard material plate is 3-10mm, and preferably 5mm; the metal plate includes but is not limited to a steel plate, an aluminum alloy plate or a titanium alloy plate; and the hard material plate includes but is not limited to a non-metal ceramic plate, a hard plastic plate or a hard wood plate.

[0104] Considering the use environment of the scraper, in order to facilitate cleaning of the material that may be accumulated on the flat plate, Figure 2The flat plate is flush with the upper end surface of the head rack 11. It should be noted that the arc-shaped head 52 can be designed as a free end. Since the height of the scraper of the utility model does not exceed 300 mm, the material blocking plate is relatively close to the speed reducer motor of the driving assembly. The design of the free end can fully utilize the vibration of the scraper itself (most of which is generated by the speed reducer motor), so that the material slides along the arc surface.

[0105] In some embodiments of the utility model, as shown in Figure 2 、 Figure 5 、 Figure 11 and Figure 12 , the scraper of the embodiment comprises: the rack 10 comprises a head rack 11, a middle rack 12 and a tail rack 13; the head rack 11 is connected with one end of the middle rack 12, and a driving shaft seat 14 is arranged in the head rack 11, and a driving shaft 15 is installed in the driving shaft seat 14; the tail assembly comprises the tail rack 13, the tail rack 13 is connected with the end of the middle rack 12 away from the head rack 11, and a driven shaft seat 16 is arranged in the tail rack 13, and a driven shaft 17 is installed in the driven shaft seat 16.

[0106] Further, the driving assembly 20 provides power for the operation of the scraper, which comprises a speed reducer motor 21, two transmission chains 22, two driving wheels 23 and two driven wheels 24; the speed reducer motor 21 is arranged on the outside of the head rack 11, and the speed reducer motor 21 drives the driving shaft 15; the driving wheel 23 is connected with the driving shaft 15, and the driven wheel 24 is connected with the driven shaft 17; the transmission chain 22 is arranged around the driving wheel 23 and the driven wheel 24.

[0107] The tensioning assembly 30 is arranged at the end of the head rack 11 and connected with the driving shaft seat 14, which comprises a lead screw 31 and a nut adjusting seat 32; the lead screw 31 extends into the head rack 11 from the end of the head rack 11 and is connected with the driving shaft seat 14, and the nut adjusting seat 32 is arranged on the outside of the head rack 11 and connected with the lead screw 31.

[0108] The scraper assembly 40 comprises at least one scraper and a connecting head 43; the scraper is connected with the transmission chain 22 through the connecting head 43; the scraper comprises an arch-breaking scraper 41 and / or a flat scraper 42; the material blocking plate 50 is arranged above the driving wheel 23, and the material blocking plate 50 has at least one material blocking surface 51, and the movement track B61 of at least part of the material 60 falling onto the driving wheel 23 passes through the material blocking surface 51.

[0109] In combination with Figure 12As shown, the material baffle 50 extends outwardly of the driving wheel 23 to form an arc-shaped head 52, the inner profile line of the arc-shaped head 52 is located outwardly of the circular arc-shaped movement track A of the scraper assembly 40, and a gap F is formed between the arc-shaped head 52 and the circular arc-shaped movement track A, which can provide a discharge passage for the material adhered to the arch-breaking scraper 41 and / or the flat scraper 42.

[0110] It should be noted that for some materials, the materials falling on the material baffle will form accumulation or move to the non-fixed side of the material baffle, therefore, the material baffle 50 is designed to have the arc-shaped head 52, the materials will slide along the arc-shaped head under vibration, effectively reducing the accumulation, especially the wet materials, which will fall to the bottom along the arc-shaped head 52.

[0111] Through a large number of field uses, the above design not only meets the use requirements, but also reduces the material accumulation, and has a good use effect.

[0112] In Figure 11 and Figure 12 , the material baffle 50 is a one-piece structure, which can reduce the material falling on the driving shaft, thereby avoiding the phenomenon that the driving shaft 15 is corroded and broken due to the adhesion of the material; or, the material baffle 50 is a split structure, which is simple to process and manufacture.

[0113] Further, through a large number of uses, it can be found that the material baffle surface 51 and the surface of the arc-shaped head 52 are smoothly transitioned, for some wet materials, the smooth transition of the surface can reduce the moving resistance, and has a good use effect.

[0114] The above describes the present application and its embodiments in a schematic manner, which is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above description, without departing from the spirit of the present application, similar structural modes and embodiments can be designed without creativity, which should all belong to the protection scope of the present application.

Claims

1. A scraper machine comprising: a frame (10); a drive assembly (20) disposed on the frame, comprising a transmission chain (22), a driving wheel (23) and a driven wheel (24); the transmission chain (22) is arranged around the driving wheel (23) and the driven wheel (24); a scraper assembly (40) comprising at least one scraper, the scraper is connected with the transmission chain (22) through a connecting head (43); characterized in that further comprising a material blocking plate (50) disposed above the driving wheel (23), the longitudinal projection of the material blocking plate (50) can cover at least part of the driving wheel (23) with a transverse thickness H and a longitudinal diameter D, to block part of the material (60) from falling onto the driving wheel (23) and / or into the groove (231) of the driving wheel (23).

2. The screed machine of claim 1, wherein, The normal projection length of the material blocking plate (50) in the longitudinal projection direction is L, and the normal projection width is S; the normal projection length L is greater than or equal to the longitudinal diameter D of the driving wheel (23), and the normal projection width S is greater than or equal to the transverse thickness H of the driving wheel (23).

3. The screed machine of claim 1, wherein, The material blocking plate (50) comprises two plates, and the two plates are respectively corresponding to two driving wheels (23) and are horizontally disposed above the driving wheels (23); and / or, the two plates are fixed on the frame (10).

4. The screed machine of claim 3, wherein, In the longitudinal projection direction, the edge of the plate width exceeds the profile end surface of the driving wheel (23), and the width of the exceeding part is 5-20mm.

5. The screed machine of claim 3, wherein, At least one plate is welded on the frame (10); and / or, at least one plate is fixed on the frame (10) through a fastener.

6. The screed machine of claim 1, wherein, The material blocking plate (50) comprises a plate, and the plate is arranged above the driving wheel (23) and is fixed at both ends with the frame (10).

7. The screed machine of claim 6, wherein, Both ends of the plate are welded on the frame (10); and / or, both ends of the plate are fixed on the frame (10) through a fastener.

8. The screed machine of any of claims 1-7, wherein, The material blocking plate (50) has an arc-shaped head (52) extending along the circular arc-shaped motion track A (44) of the scraper assembly (40); the inner profile line of the arc-shaped head (52) is located outside the circular arc-shaped motion track A (44), and a gap F is formed between them.

9. The screed machine of claim 8, wherein, In the longitudinal projection direction, the end surface of the arc-shaped head (52) is located between the outer circular profile line (232) of the driving wheel (23) and the circular arc-shaped motion track A (44) of the scraper assembly (40), so that the normal projection length L of the material blocking plate (50) in the longitudinal projection direction is greater than the longitudinal diameter D of the driving wheel (23), and L=(1.01-1.5)*D is satisfied.

10. The screed machine of claim 8, wherein, In the longitudinal projection direction, the arc-shaped head (52) extends outward beyond the circular arc-shaped motion track A (44) of the scraper assembly (40), so that the normal projection length L of the material blocking plate (50) in the longitudinal projection direction is greater than the longitudinal diameter D of the driving wheel (23), and L=(1.51-2.0)*D is satisfied.

11. The screed machine of claim 8, wherein, The circular arc radius R1 of the arc-shaped head (52) is greater than the circular arc radius R2 of the circular arc-shaped motion track A (44) of the scraper assembly (40).

12. The screed machine of claim 3 or 5, wherein, The flat plate is made of a metal plate or a hard material plate with consistent thickness; the metal plate includes but is not limited to a steel plate, an aluminum alloy plate or a titanium alloy plate; the hard material plate includes but is not limited to a non-metal ceramic plate, a hard plastic plate or a hard wood plate.

13. The screed machine of claim 3 or 5, wherein, The flat plate is flush with the upper end surface of the rack (10).

14. The screed machine of claim 8, wherein, The arc-shaped head (52) is a free end.

15. A scraper machine, comprising: a rack (10); a driving assembly (20) arranged on the rack, including a transmission chain (22), a driving wheel (23) and a driven wheel (24); the transmission chain (22) is arranged around the driving wheel (23) and the driven wheel (24); a scraper assembly (40) including at least one scraper; the scraper is connected with the transmission chain (22) through a connecting head (43); characterized in that further comprising a material blocking plate (50) arranged above the driving wheel (23), the material blocking plate (50) has a material blocking surface (51), and a movement track B (61) of at least part of the material (60) falling onto the driving wheel (23) passes through the material blocking surface (51).

16. The screed machine of claim 15, wherein, The material blocking plate (50) extends outwardly to the driving wheel (23) to form an arc-shaped head (52), an inner profile line of the arc-shaped head (52) is located outwardly of a circular arc-shaped movement track A (44) of the scraper assembly (40), and a gap F is formed between the arc-shaped head (52) and the movement track A (44).

17. The screed machine of claim 16, wherein, The material blocking plate (50) is of an integral structure; or, the material blocking plate (50) is of a split structure.

18. The screed machine of claim 17, wherein, The material blocking surface (51) and a surface of the arc-shaped head (52) are smoothly connected.

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