Sprocket box and paver

Abstract

The present invention relates to the technical field of paving equipment, and specifically provides a sprocket box and a paving machine, wherein the sprocket box comprises: a box body; a support frame, the support frame is located in the box body, the support frame is connected to the box body, and the support frame comprises a support sleeve; a first driven sprocket, which partially extends into the interior of the support sleeve; a second driven sprocket, which is arranged opposite to the first driven sprocket, and the second driven sprocket partially extends into the interior of the support sleeve; wherein the support sleeve supports the first driven sprocket and the second driven sprocket, and the first driven sprocket and the second driven sprocket are rotatably connected to the support sleeve. The present invention arranges a support sleeve in the box body to support two driven sprockets at the same time, so that the driven sprockets on each side are independent of each other, and the two drive chains can be close to each other at a minimum distance, thereby reducing the width of the box body, improving the segregation phenomenon at the box body, and improving the paving quality.

Description

Technical Field

[0001] The present invention relates to the technical field of paving equipment, and in particular to a sprocket box and a paving machine. Background Art

[0002] The paving machine is used to realize the paving operation. At present, some paving machines are driven by setting a sprocket box. The sprocket box includes a box body, two active rotating components and two driven rotating components, wherein the driven rotating components are connected to the active rotating components through a chain, and the two driven rotating components are relatively installed on two opposite side walls of the box body.

[0003] In the related art, the sprocket box assembly 100' of the paving machine adopts Figure 1 The intermediate support shaft 120' shown is a structural form that supports the driven sprocket shafts on both sides. The intermediate support shaft 120' is located between the two driven sprockets, which brings about the problem of increasing the width of the box. Specifically, a support shaft coaxially arranged with the two driven rotating components is arranged between the two driven rotating components. The two driven rotating components are provided with notches. The two ends of the support shaft are inserted into the notches and are rotatably connected with the two driven rotating components through rotating bearings. The intermediate support shaft 120' is then fixedly connected with the box through a support plate. The above structure mainly has the following disadvantages: 1) The intermediate support shaft 120' takes into account the support of the driven rotating components on both sides. Therefore, the coaxiality of the sprockets on both sides fixed on the driven rotating components affects each other. It is difficult to ensure the installation accuracy of the actual center axis of each sprocket in processing, that is, eccentricity occurs, which ultimately affects the inconsistent tension of the chain within one cycle of operation, causing the chain to have a large swing phenomenon; 2) Due to the existence of the support shaft, the distance between the two chains is large, which increases the width of the box. The wide box aggravates the segregation of asphalt at the box, affecting the paving quality. In addition, some paving machines have sprocket box components 100" that adopt the following Figure 2 The hanger 120" shown in the figure makes the box body, the hanger 120" and the driven sprocket shaft become a whole and then fixed on the lifting connecting plate or the frame. Since the hanger body and the box body are integrated, the middle drive shaft and the hanger cannot be disassembled. The existence of the middle hanger body will cause segregation and material obstruction, affecting the paving quality. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a sprocket box and a paver to improve the above-mentioned technical problems existing in the background technology.

[0005] To this end, a first object of the present invention is to provide a sprocket box.

[0006] A second object of the present invention is to provide a paving machine.

[0007] To achieve the first objective of the present invention, an embodiment of the present invention provides a sprocket box, comprising: a box body; a support frame, the support frame is located in the box body, the support frame is connected to the box body, and the support frame includes a support sleeve; the first driven sprocket partially extends into the interior of the support sleeve; the second driven sprocket is arranged opposite to the first driven sprocket, and the second driven sprocket partially extends into the interior of the support sleeve; wherein, the support sleeve supports the first driven sprocket and the second driven sprocket, and the first driven sprocket and the second driven sprocket are rotatably connected to the support sleeve.

[0008] The first driven sprocket and the second driven sprocket are respectively extended into the box body and then into the interior of the same support sleeve, which reduces the distance between the two chain teeth of the two driven sprockets, thereby reducing the width of the box body, improving the segregation phenomenon at the box body, and ultimately improving the paving quality.

[0009] In addition, the technical solution provided by the present invention may also have the following additional technical features:

[0010] In the above technical solution, the support sleeve includes: an annular body; a first bearing fitting hole, which is arranged on the annular body; a second bearing fitting hole, which is arranged on the annular body and is arranged opposite to the first bearing fitting hole; wherein the first driven sprocket extends to the interior of the first bearing fitting hole, and the second driven sprocket extends to the interior of the second bearing fitting hole.

[0011] The first driven sprocket and the second driven sprocket extend into the support sleeve through the first bearing hole matching surface and the second bearing hole matching surface respectively, so as to be commonly supported on a support sleeve.

[0012] In any of the above technical solutions, the sprocket box also includes: a first inner bearing, which is arranged between the first driven sprocket and the annular body, and has a first bearing inner ring and a first bearing outer ring; a second inner bearing, which is arranged between the second driven sprocket and the annular body, and has a second bearing inner ring and a second bearing outer ring; wherein, the first bearing inner ring is connected to the first driven sprocket, and the first bearing outer ring is connected to the annular body; the second bearing inner ring is connected to the second driven sprocket, and the two bearing outer rings are connected to the annular body.

[0013] The first driven sprocket and the second driven sprocket both extend into the support sleeve through an inner bearing and are connected to the support sleeve. Especially when the first bearing matching hole and the second bearing matching hole are coaxially arranged, the inner bearing is a standard purchased part, so the coaxial arrangement of the first driven sprocket or the second driven sprocket can be guaranteed, and the structure is stable when the first driven sprocket or the second driven sprocket rotates independently, avoiding the swing of the chain.

[0014] In any of the above technical solutions, the support sleeve also includes: a separation ring, which protrudes from the inner wall of the annular body and is arranged between the first bearing matching hole and the second bearing matching hole to separate the first bearing outer ring and the second bearing outer ring.

[0015] The setting of the separation ring can separate the first bearing outer ring from the second bearing outer ring, thereby separating the first driven sprocket and the second driven sprocket and ensuring that the first driven sprocket and the second driven sprocket do not collide, so that the first driven sprocket and the second driven sprocket maintain independence.

[0016] In any of the above technical solutions, the box body includes: two side walls arranged opposite to each other; two mounting holes, respectively arranged on the two side walls; wherein the mounting hole on one side is coaxially arranged with the first bearing matching hole, and the mounting hole on the other side is coaxially arranged with the second bearing matching hole, and a part of the first driven sprocket or a part of the second driven sprocket is supported in the mounting hole.

[0017] The two mounting holes can ensure the coaxiality of machining, and can also ensure the coaxiality of machining with the first bearing matching hole and the second bearing matching hole, so that it is possible to achieve the coaxial arrangement of the two driven sprockets.

[0018] In the above technical solution, the sprocket box also includes: a first bearing seat, which is arranged in the mounting hole; a first outer bearing, which is arranged in the first bearing seat, and has a third bearing inner ring and a third bearing outer ring, and is connected to the first driven sprocket; a second bearing seat, which is arranged in the mounting hole; a second outer bearing, which is arranged in the second bearing seat, and has a fourth bearing inner ring and a fourth bearing outer ring, and is connected to the second driven sprocket.

[0019] The first bearing seat and the second bearing seat jointly support the rotation of the first driven sprocket or the second driven sprocket, and on the basis of ensuring the coaxiality of the first driven sprocket or the second driven sprocket, the stability and reliability of the rotation of the driven sprocket can be improved.

[0020] In any of the above technical solutions, the support frame includes: a connecting pipe, both ends of which are respectively connected to the box body; a suspension rod, one end of which is connected to the connecting pipe, and the other end extends out of the outer surface of the connecting pipe and is connected to the support sleeve.

[0021] The suspension rod is located between the chain teeth of the first driven sprocket and the chain teeth of the second driven sprocket, so that the outer dimensions of the suspension rod meet this requirement as much as possible, which can ensure that the width of the box is minimized and the running width of the chain is guaranteed.

[0022] In the above technical solution, the sprocket box also includes: a first power input device, a second power input device, and a first input shaft connected to the first power input device and a second input shaft connected to the second power input device, the first power input device is arranged on an outer side of the box body, and the second power input device is arranged on the other outer side of the box body, the first input shaft and the second input shaft respectively extend into the box body, a first driving sprocket and a second driving sprocket are arranged in the box body, the first driving sprocket is sleeved on the first input shaft, and the second driving sprocket is sleeved on the second input shaft, a first driven shaft and a second driven shaft are also arranged in the box body, the first driven sprocket is sleeved on the first driven shaft, and the second driven sprocket is sleeved on the second driven shaft, the first driven shaft and the second driven shaft are arranged at intervals, the first driving sprocket is connected to the first driven sprocket by a first chain, and the second driving sprocket is connected to the second driven sprocket by a second chain.

[0023] Simple structure and high transmission efficiency.

[0024] In any of the above technical solutions, the sprocket box also includes an end plate, which is arranged on the end surface of the first driven shaft or the second driven shaft in the box body, and the edge of the end plate is connected to the first driven sprocket or the second driven sprocket; a positioning bolt is passed through the first driven shaft or the second driven shaft to connect the end plate. A lifting connection plate is attached to the outer side of the box body, and a through hole is provided on the plate surface of the lifting connection plate for passing the first input shaft or the second input shaft. The lifting connection plate is provided with a threaded hole at one end close to the driven sprocket, and a tensioning plate is provided on the side wall between the lifting connection plate and the driven sprocket, and a through hole is provided on the tensioning plate to pass the tensioning bolt and allow the tensioning bolt to extend into the threaded hole of the lifting connection plate to adjust the height of the lifting connection plate.

[0025] The tension of the chain can be adjusted by adjusting the lifting connecting plate through the tensioning bolt.

[0026] To achieve the second objective of the present invention, an embodiment of the present invention provides a paving machine, comprising: a sprocket box; a spiral material distribution device arranged on both sides of the sprocket box; wherein the first driven shaft and the second driven shaft of the sprocket box are respectively connected to the spiral material distribution device on the corresponding side to drive the spiral material distribution device to operate. The paving machine provided by the embodiment of the present invention includes the sprocket box of any embodiment of the present invention, and thus has all the beneficial effects of the sprocket box of any embodiment of the present invention, which will not be repeated here.

[0027] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a cross-sectional structural schematic diagram of a sprocket box in one of the related technologies;

[0029] Figure 2 is a cross-sectional structural schematic diagram of a sprocket box in another related art;

[0030] Figure 3 It is a schematic diagram of the front cross-sectional structure of a sprocket box (without the transmission assembly installed) according to an embodiment of the present invention;

[0031] Figure 4 for Figure 3 A side view schematic diagram of the structure;

[0032] Figure 5 It is a schematic diagram of the front cross-sectional structure of a sprocket box according to an embodiment of the present invention;

[0033] Figure 6 for Figure 5 A side view schematic diagram of the structure;

[0034] Figure 7 for Figure 5 A schematic diagram of a local enlarged structure;

[0035] Figure 8 The present invention is a schematic diagram of the composition of a paver according to an embodiment of the present invention.

[0036] in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and component names in the figure is:

[0037] 100': sprocket box assembly, 120': intermediate support shaft, 100": sprocket box assembly, 120": hanger.

[0038] Figures 3 to 8 The corresponding relationship between the reference numerals and component names in the figure is:

[0039] 10: paver, 12: sprocket box, 14: material distribution device, 110: box body, 112: side wall, 114: mounting hole, 116: box body end plate, 118: lifting connecting plate, 120: tensioning plate, 122: tensioning bolt, 130: bearing seat, 132: first bearing seat, 134: second bearing seat, 140: input shaft, 142: first input shaft, 144: second input shaft, 210: driving sprocket, 212: first driving sprocket, 214: second driving sprocket, 310: driven sprocket, 312: first driven sprocket, 314: second driven sprocket, 410: chain, 412: First chain, 414: second chain, 510: power input device, 512: first power input device, 514: second power input device, 610: inner bearing, 612: first inner bearing, 614: second inner bearing, 710: outer bearing, 712: first outer bearing, 714: second outer bearing, 716: pressure cover, 810: driven shaft, 812: first driven shaft, 814: second driven shaft, 816: shaft end plate, 818: positioning bolt, 820: oil seal, 910: support frame, 912: support tube, 914: suspension rod, 916: sealing plate, 918: support rod, 920: support sleeve, 922: first bearing matching hole, 924: second and bearing matching hole, 926: separation ring, 928: annular body. DETAILED DESCRIPTION

[0040] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0042] The technical solutions of some embodiments of the present invention are described below with reference to the accompanying drawings.

[0043] Embodiment 1:

[0044] like Figures 3 to 8 As shown, this embodiment provides a sprocket box 12 for use in conjunction with a paver 10. The output end of the sprocket box 12 is connected to a material distributor 14 to drive the material distributor 14 to perform a paving operation on the road surface.

[0045] In the related art, the sprocket box assembly 100' of the paving machine adopts Figure 1The intermediate support shaft 120' shown in the figure takes into account the structural form of supporting the driven sprocket shafts on both sides. The intermediate support shaft 120' is located between the two driven sprockets, which increases the width of the box. In addition, some paving machine sprocket box components 100" adopt the following structure: Figure 2 The hanger 120" shown makes the box body, the hanger 120" and the driven sprocket shaft become a whole and then fixed on the lifting connecting plate or the frame. Each driven sprocket needs to be close to the inner wall of the box body to increase the gap between the two driven sprockets. Although the independence problem of the two driven sprockets is solved, the width of the box body will still be increased.

[0046] Since the width of the sprocket box assembly directly affects the paving quality of the paver, if the box body is too wide, the segregation of the asphalt at the box body will be aggravated, thus affecting the paving quality of the paver.

[0047] For the convenience of description and clear expression in the following embodiments, the bearing seat 130 is divided into a first bearing seat 132 and a second bearing seat 134, the input shaft 140 is divided into a first input shaft 142 and a second input shaft 144, the driving sprocket 210 is divided into a first driving sprocket 212 and a second driving sprocket 214, the driven sprocket 310 is divided into a first driven sprocket 312 and a second driven sprocket 314, the chain 410 is divided into a first chain 412 and a second chain 414, the power input device 510 is divided into a first power input device 512 and a second power input device 514, the inner bearing 610 is divided into a first inner bearing 612 and a second inner bearing 614, the outer bearing 710 is divided into a first outer bearing 712 and a second outer bearing 714, and the driven shaft 810 is divided into a first driven shaft 812 and a second driven shaft 814. Among them, the first and the second are only for the convenience of distinction and have no practical significance.

[0048] In view of this, the present embodiment provides a sprocket box 12, including a box body 110, a support frame 910, a first driven sprocket 312 and a second driven sprocket 314, wherein the support frame 910 is located in the box body 110, the support frame 910 is connected to the box body 110, and is provided with a support sleeve 920. The first driven sprocket 312 partially extends into the box body 110 and extends to the inside of the support sleeve 920, the second driven sprocket 314 is arranged opposite to the first driven sprocket 312, and the second driven sprocket 314 partially extends into the box body 110 and extends to the inside of the support sleeve 920, wherein the support sleeve 920 supports the first driven sprocket 312 and the second driven sprocket 314.

[0049] Specific combination Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the box body 110 has two side walls 112 arranged opposite to each other. The two side walls 112 are connected at one end close to the driven sprocket 310 through a bottom plate, a top plate (not shown in the figure) and a box body end plate 116. The box body end plate 116 is an arc-shaped plate.

[0050] A power input device 510 and a driving sprocket 210 are provided at one end of the housing 110 in the length direction, wherein the first power input device 512 is connected to the first driving sprocket 212 via the first input shaft 142, and the second power input device 514 is connected to the second driving sprocket 214 via the input shaft 144, and the first driving sprocket 212 and the second driving sprocket 214 are both located in the housing 110. The power input device 510 is a reducer, and the output shaft of the reducer is the input shaft 140.

[0051] A driven shaft 810 and a driven sprocket 310 are provided at the other end of the housing 110 in the length direction. The power input device 510 drives the driven sprocket 310 to rotate through the driving sprocket 210 and the chain 410. A portion of the first driven shaft 812 extends into the housing 110, and the first driven sprocket 312 is assembled with the first driven shaft 812 in the form of a key connection, such as a spline connection. A portion of the second driven shaft 814 extends into the housing 110, and the second driven sprocket 314 is assembled with the second driven shaft 814 in the form of a key connection, such as a spline connection.

[0052] The first power input device 512 drives the first driving sprocket 212 to rotate, the first driving sprocket 212 drives the first driven sprocket 312 to rotate through the first chain 412, the first driven sprocket 312 drives the first driven shaft 812 to rotate, so that the first driven shaft 812 outputs torque, and at the same time, the second power input device 514 drives the second driving sprocket 214 to rotate, the second driving sprocket 214 drives the second driven sprocket 314 to rotate through the second chain 414, the second driven sprocket 314 drives the second driven shaft 814 to rotate, so that the second driven shaft 814 outputs torque. The material distribution device 14 is connected to the first driven shaft 812 or the second driven shaft 814 to perform real-time paving operations.

[0053] Among them, continue to combine Figure 5As shown, a lifting connecting plate 118 is attached to the outer side of the box body 110, and a through hole is provided on the plate surface of the lifting connecting plate 118 for passing the first input shaft 142 or the second input shaft 144. The lifting connecting plate 118 has a certain thickness, so that a threaded hole is provided at one end close to the driven sprocket 310. A tensioning plate 120 is provided on the side wall 112 between the lifting connecting plate 118 and the driven sprocket 310. The tensioning plate 120 is provided with a through hole for passing a tensioning bolt 122 and allowing the tensioning bolt 122 to extend into the threaded hole of the lifting connecting plate 118. The height of the lifting connecting plate 118 can be adjusted by the tensioning bolt 122 to adjust the tension of the chain 410.

[0054] The support frame 910 is located in the box body 110 to replace the Figure 1 or Figure 2 The intermediate support shaft 120' or the suspension seat 120" commonly used in the related art shown in the figure makes the support sleeve 920 support the first driven sprocket 312 and the second driven sprocket 314 at the same time, so that the first driven sprocket 312 and the second driven sprocket 314 on both sides are independent of each other. The first driven sprocket 312 and the second driven sprocket 314 are both provided with chain teeth meshing with the chain 410. The first driven sprocket 312 and the second driven sprocket 314 are relatively arranged on the box body 110 and both have a part extending into the box body 110 and extending to the inside of the support sleeve 920, so that the first chain 412 and the second chain 414 can be close to each other at a minimum distance, which shortens the distance between the two chain teeth, thereby reducing the width dimension of the box body 110, improving the segregation phenomenon at the box body 110, and improving the paving quality.

[0055] Embodiment 2:

[0056] This embodiment provides a sprocket box. In addition to the technical features of the above-mentioned embodiments, this embodiment also includes the following technical features.

[0057] Continue to combine Figure 3 As shown, the support sleeve 920 includes: an annular body 928, a first bearing fitting hole 922 and a second bearing fitting hole 924, wherein the first bearing fitting hole 922 is arranged on the annular body 928, the second bearing fitting hole 924 is arranged on the annular body 928 and is coaxially arranged with the first bearing fitting hole 922, the first driven sprocket 312 extends to the interior of the first bearing fitting hole 922, and the second driven sprocket 314 extends to the interior of the second bearing fitting hole 924.

[0058] The first driven sprocket 312 can be assembled with the first bearing matching hole 922 through the first inner bearing 612, and the second driven sprocket 314 can be assembled with the second bearing matching hole 924 through the second inner bearing 614, so that the first driven sprocket 312 and the second driven sprocket 314 are independent of each other, and when the first bearing matching hole 922 and the second bearing matching hole 924 are coaxially arranged, the coaxiality of the first driven sprocket 312 and the second driven sprocket 314 can also be achieved, further avoiding the eccentricity of the first chain 412 and the second chain 414, ensuring that the first driven sprocket 312 and the second driven sprocket 314 will not collide, thereby ensuring the mutual independence between the two. A separation ring 926 is circumferentially arranged on the inner wall of the annular body 928 to separate the first bearing matching hole 922 and the second bearing matching hole 924. The first bearing outer ring is installed in the first bearing matching hole 922 , and the second bearing outer ring is installed in the second bearing matching hole 924 . In addition, the separation ring 926 can also be replaced by a baffle, but it will cause trouble when installing the inner bearing 610 .

[0059] The first driven sprocket 312 and the second driven sprocket 314 extend into the housing 110 respectively and extend to the interior of the first bearing matching hole 922 and the interior of the second bearing matching hole 924 respectively to achieve rotational cooperation so as to be jointly supported on the support sleeve 920, thereby achieving the purpose of reducing the width of the housing by sharing a support sleeve 920.

[0060] Embodiment 3:

[0061] This embodiment provides a sprocket box. In addition to the technical features of the above-mentioned embodiments, this embodiment also includes the following technical features.

[0062] Continue to combine Figure 5 and Figure 7 As shown, the sprocket box 12 also includes: a first inner bearing 612 and a second inner bearing 614. The first inner bearing 612 is arranged between the first driven sprocket 312 and the annular body 928, and the first inner bearing 612 has a first bearing inner ring and a first bearing outer ring. The second inner bearing 614 is arranged between the second driven sprocket 314 and the annular body 928, and the second inner bearing 614 has a second bearing inner ring and a second bearing outer ring. The first bearing inner ring is connected to the first driven sprocket 312, the first bearing outer ring is connected to the first bearing matching hole 922, the second bearing inner ring is connected to the second driven sprocket 314, and the second bearing outer ring is connected to the first bearing matching hole 922.

[0063] The first driven sprocket 312 rotates in cooperation with the first bearing inner ring and the first bearing outer ring, so that the first driven sprocket 312 drives the first driven shaft 812 to rotate, so that the first driven shaft 812 outputs torque. Similarly, the second driven sprocket 314 rotates in cooperation with the second bearing inner ring and the second bearing outer ring, so that the second driven sprocket 314 drives the second driven shaft 814 to rotate, so that the second driven shaft 814 outputs torque.

[0064] Embodiment 4:

[0065] This embodiment provides a sprocket box. In addition to the technical features of the above-mentioned embodiments, this embodiment also includes the following technical features.

[0066] Use Figure 1 The structure of the intermediate support shaft 120' supporting the driven sprocket shafts on both sides not only increases the width of the box 110, but also affects the coaxiality of the driven sprockets fixed on the driven sprocket shafts on both sides. It is difficult to ensure the installation accuracy of the actual center axis of each driven sprocket in processing, that is, eccentricity occurs, which ultimately affects the operation of the chain, making the tension degree inconsistent within the circle, resulting in a large swing of the chain. In addition, although some box structures also adopt Figure 2 The hanger 120" shown makes the box, the hanger and the driven sprocket shaft become a whole and then fixed on the lifting connecting plate or the frame. The processing deformation of the frame (welding machine) and the hanger body (welding machine) and the deformation caused by actual operation, as well as the assembly error caused by bolt installation, also greatly affects the coaxiality of the two driven sprocket shafts, and also causes the chain to swing more. And because the hanger 120" and the box are integrated, the driven sprocket shaft and the hanger cannot be disassembled, and the existence of the hanger 120" will cause segregation and material obstruction, which ultimately affects the paving quality.

[0067] In view of this, it is necessary to ensure the coaxiality of the first driven sprocket 312 and the second driven sprocket 314. Therefore, the box body 110 includes: two opposite side walls 112 and two mounting holes 114. Figure 3 As shown, two mounting holes 114 are respectively arranged on two side walls 112, wherein the mounting hole 114 on one side is coaxially arranged with the first bearing matching hole 922, and the mounting hole 114 on the other side is coaxially arranged with the second bearing matching hole 924, and a part of the first driven sprocket 312 or a part of the second driven sprocket 314 is supported in the mounting hole 114, thereby ensuring the coaxiality of the first driven sprocket 312 or the second driven sprocket 314 supported in the mounting hole 114, avoiding the swing of the first chain 412 and the second chain 414, thereby avoiding the generation of segregation and material blocking, and ensuring the paving quality of the paver.

[0068] Embodiment 5:

[0069] This embodiment provides a sprocket box 12. In addition to the technical features of the above-mentioned embodiment, this embodiment also includes the following technical features.

[0070] While being able to reduce the width of the box body 110, it is also necessary to ensure the stability of the torque transmission of the driven shaft 810, that is, to ensure the stability of the rotation of the driven sprocket 310. Therefore, the sprocket box 12 also includes: a first outer bearing 712, a first bearing seat 132, a second outer bearing 714 and a second bearing seat 134, and further combined Figure 5 and Figure 7 As shown, the first bearing seat 132 is disposed in the mounting hole 114 and has an edge extending out of the mounting hole 114 to be connected to the side wall 112 by fasteners, such as bolts or screws. The first outer bearing 712 is disposed in the first bearing seat 132 and has a third bearing inner ring and a third bearing outer ring, and is connected to the first driven sprocket 312. The second bearing seat 134 is disposed in another mounting hole 114, and the second outer bearing 714 is disposed in the second bearing seat 134 and has a fourth bearing inner ring and a fourth bearing outer ring, and is connected to the second driven sprocket 314. In order to ensure the stability of the installation structure of the first bearing seat 132 or the second bearing seat 134, the first driven shaft 812 or the second driven shaft 814 is connected to the first bearing seat 132 or the second bearing seat 134 through a pressure cover 716. The pressure cover 716 can be a flange cover plate. A through hole is provided in the center of the pressure cover 716 to allow the end of the driven shaft 810 located outside the housing 110 to pass through. The pressure cover 716 is connected to the bearing seat 130 through fasteners, such as bolts or screws. The bearing seat 130 can be connected to the side wall 112 of the housing 110 through fasteners to further connect the bearing seat 130 and the housing 110 through the pressure cover 716.

[0071] The support of the two bearing seats can be used to ensure the stability of the rotating structure of the driven sprocket 310.

[0072] Embodiment 6:

[0073] This embodiment provides a sprocket box. In addition to the technical features of the above-mentioned embodiments, this embodiment also includes the following technical features.

[0074] Continue to combine Figure 5 and Figure 7As shown, the sprocket box 12 also includes a first driven shaft 812, a second driven shaft 814, a shaft end plate 816 and a positioning bolt 818. One end of the first driven shaft 812 extends into the box body 110 and is connected to the first driven sprocket 312, and the other end extends out of one end of the box body 110 to output torque. One end of the second driven shaft 814 extends into the box body 110 and is connected to the second driven sprocket 314, and one end extending out of the box body 110 outputs torque. The shaft end plate 816 is arranged on the end surface of the first driven shaft 812 or the second driven shaft 814 in the box body 110, and the edge of the shaft end plate 816 is connected to the first driven sprocket 312 or the second driven sprocket 314. The positioning bolt 818 penetrates the first driven shaft 812 or the second driven shaft 814 to connect the shaft end plate 816. Such a structure makes the connection structure between the first driven shaft 812 and the first driven sprocket 312 more compact, and further provides a reliable guarantee for reducing the width of the box body 110. In particular, the positioning bolt 818 not only has the function of further connecting the shaft end plate 816 and the first driven shaft 812 or the shaft end plate 816 and the second driven shaft 814, but also has the function of axially positioning the first driven shaft 812 or the second driven shaft 814. An oil seal 820 is also provided at one end of the positioning bolt 818 close to the side wall 112.

[0075] Embodiment 7:

[0076] This embodiment provides a sprocket box. In addition to the technical features of the above-mentioned embodiments, this embodiment also includes the following technical features.

[0077] Continue to combine Figure 3 , Figure 5 and Figure 7As shown, the support frame 910 has a symmetrical structure with the center line of the width of the box body 110 as the symmetry center, which can further ensure that the support frame 910, especially the support sleeve 920, will not deviate during long-term use, thereby further ensuring the coaxiality of the first driven sprocket 312 and the second driven sprocket 314. Specifically, the support frame 910 includes: a connecting pipe 912 and a suspension rod 914, wherein the connecting pipe 912 is a hollow tubular structure, which can reduce its own weight, and sealing plates 916 are provided at both ends of the connecting pipe 912 to prevent impurities from entering the box body 110, and the two ends of the connecting pipe 912 are respectively connected to the box body 110. One end of the suspension rod 914 is welded to the middle of the connecting pipe 912, and the other end of the suspension rod 914 is welded to the support sleeve 920. The extension direction of the hanger 914 is perpendicular to the extension direction of the connecting tube 912 and the support sleeve 920. The hanger 914 is located between the chain teeth of the first driven sprocket 312 and the chain teeth of the second driven sprocket 314, shortening the distance between the two chains as much as possible. That is, the width of the box 110 can be reduced while ensuring the operation of the chains. At the same time, the symmetrical structure can further ensure the stability of the support structure of the support frame 910 for the driven sprockets on both sides.

[0078] In order to increase the structural strength of the support frame 910 supporting the support sleeve 920 , the support sleeve 920 is further connected to the box end plate 116 via a support rod 918 .

[0079] Embodiment 8:

[0080] Continue to combine Figure 5 , Figure 6 and Figure 7As shown, the present embodiment provides a sprocket box 12, including a box body 110, a support frame 910, a first bearing seat 132, a second bearing seat 134, a first driven sprocket 312, a first driven shaft 812, a second driven sprocket 314, a second driven shaft 814, a first driving sprocket 212, a second driving sprocket 214, a first chain 412, a second chain 414, a first power input device 512, a second power input device 514, and a first input shaft 142 connected to the first power input device 512 and a second input shaft 144 connected to the second power input device 514. The first power input device 512 is arranged on an outer side of the box body 110, and the second power input device 514 is arranged on an outer side of the box body 110. The first input shaft 142 and the second input shaft 144 are arranged on the other outer side of the housing 110, respectively extending into the housing 110, and a first driving sprocket 212 and a second driving sprocket 214 are arranged in the housing 110, the first driving sprocket 212 is sleeved on the first input shaft 142, and the second driving sprocket 214 is sleeved on the second input shaft 144, and a first driven shaft 812 and a second driven shaft 814 are also arranged in the housing 110, the first driven sprocket 312 is sleeved on the first driven shaft 812, and the second driven sprocket 314 is sleeved on the second driven shaft 814, the first driven shaft 812 and the second driven shaft 814 are arranged at intervals, the first driving sprocket 212 is connected to the first driven sprocket 312 by a first chain 412, and the second driving sprocket 214 is connected to the second driven sprocket 314 by a second chain 414. Among them, the box body 110 has two opposite side walls 112, and the two side walls 112 are connected at one end close to the driven sprocket 310 through a bottom plate, a top plate (not shown in the figure) and a box end plate 116. Two mounting holes 114 are respectively provided on the two opposite side walls 112 of the box body 110, a part of the first driven sprocket 312 is supported in the mounting hole 114, and a part of the second driven sprocket 314 is supported in the other mounting hole 114.

[0081] The first bearing seat 132 and the second bearing seat 134 are respectively disposed in the two mounting holes 114 to support the first driven sprocket 312 and the second driven sprocket 314 respectively.

[0082] The support frame 910 is provided with a support sleeve 920, and the support sleeve 920 includes: an annular body 928, a first bearing matching hole 922 and a second bearing matching hole 924, wherein the first bearing matching hole 922 is provided on the annular body 928, and the second bearing matching hole 924 is provided on the annular body 928 and is arranged opposite to the first bearing matching hole 922. The first bearing matching hole 922 is coaxially arranged with the mounting hole 114 on the corresponding side, and the second bearing matching hole 924 is coaxially arranged with the mounting hole 114 on the corresponding side.

[0083] A first inner bearing 612 is provided between the first driven sprocket 312 and the annular body 928, and the first inner bearing 612 has a first bearing inner ring and a first bearing outer ring. A second inner bearing 614 is provided between the second driven sprocket 314 and the annular body 928, and the second inner bearing 614 has a second bearing inner ring and a second bearing outer ring. The first bearing inner ring is connected to the first driven sprocket 312, the first bearing outer ring is connected to the first bearing matching hole 922, the second bearing inner ring is connected to the second driven sprocket 314, and the second bearing outer ring is connected to the first bearing matching hole 922.

[0084] The first driven sprocket 312 cooperates with the first bearing outer ring through the first bearing inner ring, so that the first driven sprocket 312 rotates and drives the first driven shaft 812 to rotate, so that the first driven shaft 812 outputs torque. Similarly, the second driven sprocket 314 cooperates with the second bearing inner ring and the second bearing outer ring, so that the second driven sprocket 314 rotates and drives the second driven shaft 814 to rotate, so that the second driven shaft 814 outputs torque.

[0085] The first driven sprocket 312 can be assembled with the first bearing matching hole 922 through the first inner bearing 612, and the second driven sprocket 314 can be assembled with the second bearing matching hole 924 through the second inner bearing 614. Since the first inner bearing 612 is located in the first bearing matching hole 922, the second inner bearing 614 is located in the second bearing matching hole 924, and the first bearing matching hole 922 and the second bearing matching hole 924 are independent of each other, the first driven sprocket 312 and the second driven sprocket 314 are independent of each other. When the first bearing matching hole 922 and the second bearing matching hole 924 are coaxially arranged, the coaxiality of the first driven sprocket 312 and the second driven sprocket 314 can be further guaranteed, and the eccentricity of the first chain 412 and the second chain 414 can be avoided. In order to ensure the independence of the two driven sprockets, a separating ring 926 is circumferentially arranged in the annular body 928 to separate the first bearing matching hole 922 and the second bearing matching hole 924.

[0086] The support sleeve 920 is connected to the end of the suspension rod 914 to replace the more commonly used intermediate support shaft 120' and the suspension seat 120". The support sleeve 920 has a first bearing matching hole 922 and a second bearing matching hole 924, and a separation ring 926 is circumferentially provided inside the support sleeve 920 to separate the first bearing matching hole 922 and the second bearing matching hole 924. The mounting hole 114, the first bearing matching hole 922 and the second bearing matching hole 924 are coaxially arranged, thereby ensuring the coaxial arrangement of the first driven sprocket 312 and the second driven sprocket 314, avoiding the swing of the chain, thereby avoiding the occurrence of segregation and material blocking, and ensuring the paving quality of the paver.

[0087] The support frame 910 is located in the box 110. The support frame 910 includes: a connecting pipe 912 and a suspension rod 914. The connecting pipe 912 is a hollow tubular structure, which can reduce weight. The two ends of the connecting pipe 912 are provided with sealing plates 916 to prevent impurities from entering the box 110. The two ends of the connecting pipe 912 are respectively connected to the box 110. One end of the suspension rod 914 is welded to the middle of the connecting pipe 912, and the other end of the suspension rod 914 extends out of the outer surface of the connecting pipe 912 and is welded to the support sleeve 920. The extension direction of the suspension rod 914 is perpendicular to the extension direction of the connecting pipe 912 and the support sleeve 920. The suspension rod 914 is located between the chain teeth of the first driven sprocket 312 and the chain teeth of the second driven sprocket 314, so that the outer dimensions of the suspension rod 914 and the support sleeve 920 do not exceed the internal installation dimension requirements when the chain is running. The internal space of the box 110 only needs to consider the chain channel and installation requirements, which reduces the width dimension of the box 110. In order to increase the structural strength of the support frame 910 , the support sleeve 920 is connected to the end plate 116 via the support rod 918 .

[0088] One end of the first driven shaft 812 extends into the housing 110 and is connected to the first driven sprocket 312, and the other end extends out of one end of the housing 110 to output torque. One end of the second driven shaft 814 extends into the housing 110 and is connected to the second driven sprocket 314, and one end extends out of the housing 110 to output torque. The shaft end plate 816 is provided on the end surface of the first driven shaft 812 or the second driven shaft 814 in the housing 110, and the edge of the shaft end plate 816 is connected to the first driven sprocket 312 or the second driven sprocket 314. The positioning bolt 818 passes through the first driven shaft 812 or the second driven shaft 814 to connect the shaft end plate 816. Such a structure makes the connection structure between the first driven shaft 812 and the first driven sprocket 312 more compact, and further provides a reliable guarantee for reducing the width of the box body 110. In particular, the positioning bolt 818 not only has the function of further connecting the shaft end plate 816 and the first driven shaft 812 or the shaft end plate 816 and the second driven shaft 814, but also has the function of axially positioning the first driven shaft 812 or the second driven shaft 814. An oil seal 820 is also provided at one end of the positioning bolt 818 close to the side wall 112.

[0089] Embodiment 9:

[0090] Combination Figure 8 As shown, a paving machine includes: a sprocket box 12 and a spiral material distribution device 14 arranged on both sides of the sprocket box 12. The first driven shaft 812 and the second driven shaft 814 of the sprocket box 12 are respectively connected to the spiral material distribution device 14 on the corresponding side to drive the spiral material distribution device 14 to operate. Specifically, a spiral shaft is provided inside the spiral material distribution device 14, and the spiral shaft is connected to the first driven shaft 812 or the second driven shaft 814 to distribute and spread the paving material entering the spiral material distribution device 14 to implement the paving operation.

[0091] In the present invention, a sprocket box 12 with a small width is applied to the paver 10 , thereby improving the paving quality of the paver 10 .

[0092] In summary, the beneficial effects of the embodiments of the present invention are:

[0093] 1. The outer dimensions of the suspension rod 914 of the support frame 910 can be selected to be smaller than the minimum inner dimension of the chain, so that the two drive chains can be close to each other at the minimum distance, thereby reducing the width dimension of the box 110 and improving the segregation phenomenon at the box 110.

[0094] 2. A support frame 910 is welded inside the box body 110 to replace the intermediate support shaft and the support plate, so that the driving wheels on each side are independent of each other, which provides the possibility of reducing the width of the box body 110 while ensuring the coaxiality of the mounting holes 114 on the two side walls 112 of the box body 110.

[0095] 3. The sprocket box 12 with a small width is applied to the paver 10 , thereby improving the paving quality of the paver 10 .

[0096] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "upper", "lower", etc., indicating directions or positional relationships, are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operate in a specific direction, and therefore, cannot be understood as limiting the present invention.

[0097] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0098] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sprocket box, characterized in that: include: Box; The support frame is located in the box body, the support frame is connected to the box body, and the support frame includes a support sleeve; A first driven sprocket partially extends into the interior of the support sleeve; A second driven sprocket is arranged opposite to the first driven sprocket, and a portion of the second driven sprocket extends into the interior of the support sleeve; Wherein, the support sleeve supports the first driven sprocket and the second driven sprocket, and the first driven sprocket and the second driven sprocket are rotatably connected to the support sleeve; The support sleeve comprises: Ring-shaped body; A first bearing matching hole is provided on the annular body; A second bearing matching hole is provided on the annular body and is arranged opposite to the first bearing matching hole; Wherein, the first driven sprocket extends to the interior of the first bearing matching hole, and the second driven sprocket extends to the interior of the second bearing matching hole; The sprocket box also includes: A first inner bearing, disposed between the first driven sprocket and the annular body, and having a first bearing inner ring and a first bearing outer ring; A second inner bearing, disposed between the second driven sprocket and the annular body, and having a second bearing inner ring and a second bearing outer ring; Wherein, the first bearing inner ring is connected to the first driven sprocket, and the first bearing outer ring is connected to the annular body; the second bearing inner ring is connected to the second driven sprocket, and the second bearing outer ring is connected to the annular body; The box body comprises: Two side walls arranged opposite to each other; Two mounting holes are respectively arranged on the two side walls; Among them, the mounting hole on one side and the first bearing matching hole are coaxially arranged, and the mounting hole on the other side and the second bearing matching hole are coaxially arranged, and a part of the first driven sprocket or a part of the second driven sprocket is supported in the mounting hole.

2. The sprocket box according to claim 1, characterized in that: The support sleeve also includes: The separation ring protrudes from the inner wall of the annular body and is arranged between the first bearing matching hole and the second bearing matching hole to separate the first bearing outer ring and the second bearing outer ring.

3. The sprocket box according to claim 1, characterized in that: Also includes: A first bearing seat is arranged in the mounting hole; A first outer bearing is disposed in the first bearing seat, has a third bearing inner ring and a third bearing outer ring, and is connected to the first driven sprocket; A second bearing seat is arranged in the mounting hole; The second outer bearing is arranged in the second bearing seat, has a fourth bearing inner ring and a fourth bearing outer ring, and is connected to the second driven sprocket.

4. The sprocket box according to any one of claims 1 to 3, characterized in that: The support frame comprises: A connecting pipe, both ends of which are respectively connected to the box body; A suspension rod has one end connected to the middle portion of the connecting pipe and the other end connected to the supporting sleeve.

5. The sprocket box according to any one of claims 1 to 3, characterized in that: Also includes: A first power input device, a second power input device, and a first input shaft connected to the first power input device and a second input shaft connected to the second power input device, the first power input device is arranged on an outer side of the box body, and the second power input device is arranged on the other outer side of the box body, the first input shaft and the second input shaft extend into the box body respectively, a first driving sprocket and a second driving sprocket are arranged in the box body, the first driving sprocket is sleeved on the first input shaft, and the second driving sprocket is sleeved on the second input shaft, a first driven shaft and a second driven shaft are also arranged in the box body, the first driven shaft and the second driven shaft are spaced apart, the first driven sprocket is sleeved on the first driven shaft, and the second driven sprocket is sleeved on the second driven shaft, the first driving sprocket is connected to the first driven sprocket by a first chain, and the second driving sprocket is connected to the second driven sprocket by a second chain.

6. The sprocket box according to claim 5, characterized in that: Also includes: An end plate is provided on the end surface of the first driven shaft or the second driven shaft in the housing, and an edge of the end plate is connected to the first driven sprocket or the second driven sprocket to limit the axial displacement of the first driven shaft or the second driven shaft; A positioning bolt, passing through the first driven shaft or the second driven shaft to connect the shaft end plate; A lifting connection plate is attached to the outer side of the box body, and a through hole is provided on the plate surface of the lifting connection plate for passing the first input shaft or the second input shaft. A threaded hole is provided at one end of the lifting connection plate close to the driven sprocket. A tensioning plate is provided on the side wall between the lifting connection plate and the driven sprocket. The tensioning plate is provided with a through hole for passing a tensioning bolt and allowing the tensioning bolt to extend into the threaded hole of the lifting connection plate to adjust the height of the lifting connection plate.

7. A paver, characterized in that: include: The sprocket box according to any one of claims 1 to 6; A spiral material distribution device arranged on both sides of the sprocket box; The first driven shaft and the second driven shaft of the sprocket box are respectively connected to the spiral material distribution device on the corresponding side to drive the spiral material distribution device to operate.

Images