How to replace the pressure wheel and its sector blocks

Abstract

The present invention discloses a pressure wheel, comprising a seat assembly and at least two sector blocks. The sector blocks are arranged on the seat assembly, the sector blocks form an annular plate structure, the outer peripheral side of the sector blocks is provided with a rolling portion radially protruding relative to the seat assembly, the outer peripheral surface of the rolling portion encloses a circular ring surface, and the sector blocks are detachably arranged. When the rolling portion on the outer peripheral side of the pressure wheel is worn and needs to be replaced, the sector blocks can be removed from the seat assembly respectively, and then new sector blocks can be installed to the seat assembly respectively to form an annular plate structure, thereby replacing and repairing the pressure wheel; the sector blocks can be removed from the seat assembly respectively, so that when the pressure wheel is replaced and repaired, compared with conventional pressure wheels, the sector blocks are relatively lightweight and can be more easily disassembled and replaced, and the independent sector blocks are also convenient for processing and manufacturing; if the seat assembly is not damaged, it can continue to be used for production, reducing waste.

Description

Technical Field

[0001] The invention relates to a roller pressing mechanism, in particular to a pressing wheel and a method for replacing a sector block of the pressing wheel. Background Art

[0002] In order to realize the transformation of solid waste into alternative fuels and to achieve the economy and commercialization of transportation, it is necessary to use an extrusion molding machine to make high-density fuel rods for easy transportation and storage. Based on the preparation needs of the above-mentioned alternative fuels, the market application of ring-die extrusion molding machines is increasing, and maintenance issues are becoming increasingly prominent. An existing ring-die extrusion molding machine has a pressure wheel and a working chamber. The material is fed into the working chamber and is formed into a fuel rod by repeated rolling of the pressure wheel. However, the outer periphery of the existing pressure wheel is easily worn. When it needs to be replaced after wear, due to the large overall weight of the pressure wheel, it is necessary to use a lifting tool to replace the entire pressure wheel, which makes it inconvenient to replace the pressure wheel. Summary of the Invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a pressure wheel that can be replaced and repaired more conveniently.

[0004] The invention also provides a method for replacing the sector blocks of the pressure wheel.

[0005] According to an embodiment of the first aspect of the present invention, a pressure wheel includes a base assembly and at least two sector blocks. The sector blocks are mounted on the base assembly, forming an annular plate structure. Rolling portions protruding radially relative to the base assembly are disposed on the outer circumference of the sector blocks. The outer circumferences of the rolling portions enclose a circular annular surface. The sector blocks are detachably mounted.

[0006] The pressing wheel according to the embodiment of the first aspect of the present invention has at least the following beneficial effects: the annular surface surrounded by the rolling portion on the outer peripheral side of the sector block protrudes radially relative to the seat body assembly, so that the pressing wheel can roll the raw material, and when the rolling portion on the outer peripheral side of the pressing wheel is worn and needs to be replaced, the sector blocks can be removed from the seat body assembly respectively, and then new sector blocks can be installed to the seat body assembly respectively to form an annular plate structure, so that the pressing wheel can be replaced and repaired; the sector blocks can be removed from the seat body assembly respectively, so that when the pressing wheel is replaced and repaired, the sector blocks are relatively lightweight compared to conventional pressing wheels, and can be more easily disassembled and replaced, and independent sector blocks are also convenient for processing and manufacturing; if the seat body assembly is not damaged, it can continue to be used for production to reduce waste.

[0007] According to some embodiments of the present invention, the seat body assembly includes a main seat body and a locking mechanism, the main seat body is provided with a columnar positioning seat, the outer periphery of the positioning seat is provided with a flange plate, the annular plate structure has an inner hole portion adapted to the positioning seat, the annular plate structure is sleeved on the positioning seat through the inner hole portion, the locking mechanism is detachably provided on the positioning seat, and the locking mechanism and the flange plate clamp and fix the fan-shaped block.

[0008] According to some embodiments of the present invention, the locking mechanism includes a locking plate and a threaded fastener, the locking plate is detachably arranged on the positioning seat, the locking plate and the flange plate are arranged on opposite sides of the fan-shaped block, and the threaded fastener is used to clamp the locking plate and the flange plate to fasten the fan-shaped block.

[0009] According to some embodiments of the present invention, the main seat body is provided with a circumferential positioning portion corresponding one-to-one to the sector block, and the sector block is provided with a circumferential matching portion for matching with the corresponding circumferential positioning portion, and the circumferential positioning portion is used to locate the circumferential position of the sector block.

[0010] According to some embodiments of the present invention, the locking mechanism and / or the flange plate is provided with a radial positioning portion, and the sector block is provided with a radial matching portion, and the radial positioning portion is used to abut against the radial matching portion and limit the sector block from moving radially outward relative to the positioning seat.

[0011] According to some embodiments of the present invention, a separation drive member is further included, wherein the separation drive member is configured to apply a force to move the locking plate away from the sector block.

[0012] According to some embodiments of the present invention, the locking plate is provided with a threaded through hole, the hole axis of the threaded through hole is arranged parallel to the hole axis of the inner hole portion, and the separation drive member is configured as a threaded push member, which is threadedly connected to the threaded through hole, and one end of the threaded push member is opposite to the fan-shaped block.

[0013] According to some embodiments of the present invention, four sector-shaped blocks are provided, and the angles of the four sector-shaped blocks are the same.

[0014] According to the method for replacing the sector blocks of the pressure wheel according to the second embodiment of the present invention, the pressure wheel includes a seat body assembly and at least two sector blocks; the sector blocks are arranged on the seat body assembly, and the sector blocks form an annular plate structure, and the outer peripheral side of the sector blocks is provided with a rolling portion radially protruding relative to the seat body assembly, and the outer peripheral surface of the rolling portion is enclosed to form an annular surface, and the sector blocks are detachably arranged; the seat body assembly includes a main seat body and a locking mechanism, and the main seat body is provided with a columnar positioning seat, and the outer periphery of the positioning seat is provided with a flange plate, and the annular plate structure The annular plate structure is provided with an inner hole portion adapted to the positioning seat, and the annular plate structure is sleeved on the positioning seat through the inner hole portion. The locking mechanism is detachably provided on the positioning seat, and the locking mechanism and the flange plate clamp and fix the sector block; the locking mechanism includes a locking plate and a threaded fastener, and the locking plate is detachably provided on the positioning seat, and the locking plate and the flange plate are respectively arranged on opposite sides of the sector block, and the threaded fastener is used to clamp and fasten the sector block with the locking plate and the flange plate; the sector block replacement method of the pressure wheel includes:

[0015] removing the threaded fastener;

[0016] Disassembling and separating the locking plate from the sector block and the main seat body;

[0017] Disassembling and separating the sector block from the main seat body;

[0018] Installing the new sector block in place of the original sector block;

[0019] The locking plate cover is arranged on the sector block;

[0020] The threaded fasteners are used to clamp and fasten the sector block between the locking plate and the flange plate.

[0021] According to some embodiments of the present invention, the pressure wheel further includes a separation drive member, the separation drive member being configured to apply a force to move the locking plate away from the sector block; the locking plate is provided with a threaded through hole, the axis of the threaded through hole being arranged parallel to the axis of the inner hole portion; the separation drive member is configured as a threaded push member, the threaded push member being threadedly connected to the threaded through hole, one end of the threaded push member being opposite to the sector block; the method for disassembling and separating the locking plate from the sector block and the main seat body comprises:

[0022] The threaded pushing piece is rotated to extend one end of the threaded pushing piece out of the threaded through hole and abut against the sector block, so that the locking plate is separated from the sector block.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0025] Figure 1 This is a front view of a pressure wheel according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 AA direction cross-sectional diagram;

[0027] Figure 3 An exploded schematic diagram of some components of a pressure wheel according to an embodiment of the present invention;

[0028] Figure 4 This is an exploded schematic diagram of the base of the pressure wheel according to an embodiment of the present invention;

[0029] Figure 5 This is a three-dimensional schematic diagram of a circular plate structure formed by enclosing sector-shaped blocks according to an embodiment of the present invention;

[0030] Figure 6 Schematic diagram of the process of replacing the sector blocks of the pressure wheel according to an embodiment of the present invention;

[0031] Figure 7 Schematic diagram of step S21 of the method for replacing the sector blocks of the pressure wheel according to an embodiment of the present invention.

[0032] Reference numerals:

[0033] Seat assembly 100, main seat 110, positioning seat 111, flange plate 112, locking mechanism 120, locking plate 121, threaded fastener 122, circumferential positioning portion 130, eccentric sleeve 140, sealing cover 150, bearing 160;

[0034] Sector block 200, annular plate structure 210, rolling portion 220, circumferential matching portion 230, radial matching portion 240;

[0035] Separation drive member 300;

[0036] The axis of rotation B of the pressure wheel. DETAILED DESCRIPTION

[0037] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0039] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] Reference Figures 1 to 5 , is a pressure wheel according to an embodiment of the present invention, comprising a base assembly 100 and four sector blocks 200. The sector blocks 200 are mounted on the base assembly 100 and form an annular plate structure 210. Rolling portions 220 protruding radially relative to the base assembly 100 are disposed on the outer circumference of the sector blocks 200. The outer circumferential surfaces of the rolling portions 220 enclose a circular annular surface. The sector blocks 200 are detachably mounted.

[0042] The annular surface formed by the rolling portion 220 on the outer peripheral side of the sector block 200 protrudes radially relative to the seat assembly 100, so that the pressure wheel can roll the raw material. When the rolling portion 220 on the outer peripheral side of the pressure wheel is worn and needs to be replaced, the sector blocks 200 can be removed from the seat assembly 100 respectively, and then new sector blocks 200 can be installed on the seat assembly 100 respectively to form an annular plate structure 210, so that the pressure wheel can be replaced and repaired; the sector blocks 200 can be removed from the seat assembly 100 respectively, so that when the pressure wheel is replaced and repaired, the sector blocks 200 are relatively lightweight compared to conventional pressure wheels, and can be more easily disassembled and replaced. The independent sector blocks 200 are also convenient for processing and manufacturing; if the seat assembly 100 is not damaged, it can continue to be used for production to reduce waste. It is conceivable that the number of sector blocks 200 can also be other numbers and is not limited to the above embodiment. For example, there are two, three or more sector blocks 200.

[0043] Reference Figures 1 to 5The seat assembly 100 includes a main seat body 110 and a locking mechanism 120. The main seat body 110 is provided with a columnar positioning seat 111. The outer periphery of the positioning seat 111 is provided with a flange plate 112. The annular plate structure 210 has an inner hole portion adapted to the positioning seat 111. The annular plate structure 210 is sleeved on the positioning seat 111 through the inner hole portion. The locking mechanism 120 is detachably provided on the positioning seat 111. The locking mechanism 120 and the flange plate 112 clamp and fix the sector block 200. The locking mechanism 120 and the flange plate 112 clamp and fix the sector block 200. The inner hole portion is positioned with the positioning seat 111, and the locking mechanism 120 is detachably provided, so that the sector block 200 can be detached.

[0044] Specifically, the annular plate structure 210 is a plate-like structure similar to an annular shape formed by enclosing four sector blocks 200 as shown in the figure.

[0045] Reference Figures 1 to 5 The diameter of the annular plate structure 210 formed by the sector blocks 200 is larger than the diameter of the flange plate 112, so that the annular plate structure 210 formed by the sector blocks 200 can extend out of the seat assembly 100, and when the rolling part 220 of the annular plate structure 210 rolls the material, it will not wear the flange plate 112.

[0046] Reference Figures 1 to 5 The four sector blocks 200 of the pressure wheel have the same angle. The same angle of the four sector blocks 200 allows them to be used interchangeably. During processing, only four sector blocks 200 of the same structure need to be processed, which facilitates processing, installation, and replacement, and provides good interchangeability. Specifically, the angle of the sector block 200 refers to the angle between the two side surfaces of the sector block 200, where the two side surfaces refer to the surfaces other than the curved surface.

[0047] Specifically, the angle of the sector blocks 200 in this embodiment is 90°. It is conceivable that the pressure wheel may also include two sector blocks 200, and the angles of the two sector blocks 200 are the same, both 180°; or the pressure wheel may also include three sector blocks 200, and the angles of the three sector blocks 200 are the same, both 120°; when the pressure wheel is composed of four or more sector blocks 200, the angles of the sector blocks 200 are the same, that is, the angle of each sector block 200 is 360° / the number of sector blocks 200.

[0048] Reference Figures 1 to 5The locking mechanism 120 includes a locking plate 121 and a threaded fastener 122. The locking plate 121 is detachably mounted on the positioning seat 111. The locking plate 121 and the flange plate 112 are located on opposite sides of the sector block 200. The threaded fastener 122 is used to clamp the locking plate 121 and the flange plate 112 to secure the sector block 200. When the locking plate 121 is mounted on the positioning seat 111, the locking plate 121 and the flange plate 112 are located on opposite sides of the sector block 200. When the threaded fastener 122 is tightened to lock the locking plate 121 and the flange plate 112, the two tend to approach each other and press against the sector block 200 in the middle, thereby clamping and securing the sector block 200 in the middle. When the threaded fastener 122 is loosened, the locking plate 121 can be removed from the positioning seat 111, allowing the sector block 200 to be disassembled. The arrangement of the locking plate 121 and the threaded fastener 122 makes the disassembly and installation of the sector block 200 relatively simple.

[0049] Specifically, the locking plate 121 is provided with a first through hole, the sector block 200 is provided with a second through hole, and the flange plate 112 is provided with a threaded hole. The threaded fastener 122 passes through the first and second through holes and is threadedly connected to the threaded holes. The locking plate 121 and the sector block 200 are locked to the flange plate 112 via the threaded fastener 122. The locking method of the above structure is relatively simple. The locking plate 121 and the flange plate 112 cooperate to clamp and fix the sector block 200. The threaded fastener 122 passes through the second through hole of the sector block 200 and also plays a certain role in fixing the sector block 200. Therefore, the locking mechanism 120 has a relatively good locking effect on the sector block 200.

[0050] Specifically, the threaded fastener 122 in this embodiment is an external hexagonal screw. It is conceivable that the threaded fastener 122 can also be other structures, such as an internal hexagonal screw, a countersunk screw, or other types of screws or bolts. It is conceivable that the threaded fasteners 122 can be used to lock the locking plate 121 and the sector block 200 in other ways. For example, a threaded hole is set in the locking plate 121, and a through hole is set in the sector block 200 and the flange plate 112. The threaded fasteners 122 pass through the two through holes and are threadedly connected to the threaded holes to lock the sector block 200, the locking plate 121 and the flange plate 112 together; or the threaded fasteners 122 do not pass through the sector block 200, but directly lock the locking plate 121 and the flange plate 112 together; or through holes are set in the locking plate 121, the sector block 200 and the flange plate 112, and the threaded fasteners 122 are bolts and nuts. The bolts pass through the three through holes and are threadedly connected to the nuts to lock the locking plate 121, the sector block 200 and the flange plate 112 together, thereby realizing a detachable setting of the sector block 200.

[0051] It is conceivable that the locking mechanism 120 can also be other structures and is not limited to the above-mentioned embodiments. For example, the locking mechanism 120 includes a screw, which directly locks the fan-shaped block 200 on the flange plate 112; or the locking mechanism 120 includes an elastic clip and a locking plate 121, and the two free ends of the elastic clip respectively abut the side walls of the locking plate 121 and the flange plate 112, so that the locking plate 121 and the flange plate 112 are close to each other, thereby clamping the fan-shaped block 200.

[0052] It is conceivable that the seat body assembly 100 can also be other structures and is not limited to the above embodiments. For example, the seat body assembly 100 includes a positioning seat 111 and a threaded fastener 122. When the sector block 200 is set on the positioning seat 111, the threaded fastener 122 is arranged radially toward the positioning seat 111 and locks the sector block 200 on the positioning seat 111.

[0053] Reference Figures 1 to 5 The locking plate 121 is configured as an annular structure, and 28 threaded fasteners 122 are provided and evenly spaced on the locking plate 121 around the positioning seat 111. The annular locking plate 121 is used to secure the four sector blocks 200 together, with relatively good locking accuracy. After the sector blocks 200 are combined to form the annular plate structure 210, they are locked at one time, which improves the locking efficiency.

[0054] It is understandable that the number of threaded fasteners 122 of the locking mechanism 120 can be other numbers and is not limited to the above embodiment. For example, the number of threaded fasteners 122 is four, eight, etc., and each sector block 200 corresponds to the same number of threaded fasteners 122.

[0055] Reference Figures 1 to 5 The main seat body 110 is provided with circumferential positioning portions 130 corresponding one-to-one with the sector blocks 200, and the sector blocks 200 are provided with circumferential mating portions 230 for mating with the corresponding circumferential positioning portions 130. The circumferential positioning portions 130 are used to locate the circumferential position of the sector blocks 200. The circumferential mating portions 230 and the circumferential positioning portions 130 are provided, and the circumferential positioning portions 130 and the circumferential mating portions 230 cooperate, so that the positioning seat 111 and the sector blocks 200 can rotate synchronously under the restriction of the circumferential positioning portions 130, and the positioning seat 111 and the sector blocks 200 are more firmly installed and less likely to deflect.

[0056] Reference Figures 1 to 5The circumferential positioning portion 130 is configured as a strip with a rectangular cross-section, and the circumferential mating portion 230 is correspondingly configured as a rectangular groove. The circumferential positioning portion 130 of the aforementioned structure provides a relatively good connection between the sector block 200 and the flange plate 112. It is conceivable that the circumferential positioning portion 130 can also have other shapes, such as a cylindrical or square strip, with the corresponding circumferential mating portion 230 being configured as a groove with the same cross-section. It is also conceivable that the circumferential positioning portion 130 can also be a rectangular groove, and the circumferential mating portion 230 can be a rectangular strip.

[0057] Specifically, the circumferential mating portion 230 is a through-slot. When the locking plate 121 is secured to the flange plate 112 via the threaded fasteners 122, the locking plate 121 covers one side opening of the circumferential mating portion 230, thereby reducing the risk of the circumferential positioning portion 130 becoming detached. Specifically, when the circumferential positioning portion 130 is inserted into the circumferential mating portion 230, the length of the circumferential positioning portion 130 within the circumferential mating portion 230 is less than the length of the circumferential mating portion 230.

[0058] Specifically, a mounting hole is defined in the flange plate 112, and the circumferential positioning portion 130 is separately machined and installed in the mounting hole. It is understood that the circumferential positioning portion 130 may also be integrally formed with the flange plate 112. It is also conceivable that the circumferential positioning portion 130 may be provided on the sector block 200, with a corresponding circumferential mating portion 230 provided on the flange plate 112. In this case, the circumferential positioning portion 130 may be integrally formed with the sector block 200, or the mounting hole may be defined in the sector block 200, with the circumferential positioning portion 130 separately machined and installed in the mounting hole.

[0059] Specifically, the circumferential positioning portion 130 and the circumferential matching portion 230 of the sector block 200 are interference-fitted, so that the circumferential positioning portion 130 also has a fixing effect on the sector block 200 .

[0060] Specifically, the circumferential positioning portion 130 and the mounting hole on the flange plate 112 are also interference fit, so that the circumferential positioning portion 130 is not easily loosened after being mounted on the flange plate 112 .

[0061] Specifically, the circumferential positioning portion 130 is extended and arranged parallel to the axis direction of the rotation shaft of the positioning seat 111 , so that the seat body assembly 100 and the sector block 200 can be better connected.

[0062] Reference Figures 1 to 5The side of the sector block 200 close to the positioning seat 111 is recessed with a circumferential fitting portion 230, and the outer peripheral side of the positioning seat 111 blocks the notch of the circumferential fitting portion 230. The circumferential fitting portion 230 of the above structure can be processed more conveniently. Specifically, the sector block 200 is processed separately. When processing the circumferential fitting portion 230, it is only necessary to directly process a groove on the arc-shaped fitting surface. Compared with opening a rectangular circumferential fitting portion 230 in the middle of the sector block 200, the difficulty is greatly reduced. After the sector block 200 is installed on the positioning seat 111, the outer periphery of the positioning seat 111 and the circumferential fitting portion 230 jointly limit the circumferential positioning portion 130, so that the circumferential positioning portion 130 and the sector block 200 are relatively fixed.

[0063] Reference Figures 1 to 5 The locking mechanism 120 is provided with a radial positioning portion, and the sector block 200 is provided with a radial mating portion 240. The radial positioning portion is used to abut against the radial mating portion 240 and limit the radial outward movement of the sector block 200 relative to the positioning seat 111. The provision of the radial positioning portion and the radial mating portion 240 can reduce the risk of the sector block 200 accidentally separating from the seat in the radial direction during rotation. It can also assist in the relative positioning of the sector block 200 and the locking plate 121 during the installation and removal process of the sector block 200, making the installation and removal of the sector block 200 more convenient.

[0064] Specifically, the radial positioning portion is provided on the locking plate 121 of the locking mechanism 120. It is conceivable that the radial positioning portion may be provided on the flange plate 112 and the radial matching portion 240 may be provided on the sector block 200, and the cooperation of the two may also reduce the risk of the sector block 200 accidentally separating from the seat in the radial direction during rotation; or radial positioning portions may be provided on both the locking plate 121 and the flange plate 112, and radial matching portions 240 may be provided on both sides of the sector block 200, with the radial positioning portion of the locking plate 121 cooperating with the radial matching portion 240 on one side of the sector block 200, and the radial positioning portion of the flange plate 112 cooperating with the radial matching portion 240 on the other side of the locking plate 121, which may also reduce the risk of the sector block 200 accidentally separating from the seat in the radial direction during rotation.

[0065] Reference Figures 1 to 5The radial positioning portion is configured as a groove, and the radial matching portion 240 is configured as a protrusion, which is accommodated in the groove. By utilizing the matching of the groove and the protrusion, the radial positioning of the sector block 200 relative to the positioning seat 111 is achieved, which has a good positioning effect and is convenient for assembling the locking plate 121 and the sector block 200. Specifically, the radial positioning portion provided on the locking plate 121 is a groove of an annular structure, and the radial matching portion 240 of the sector block 200 is configured as a fan-shaped protrusion structure. When the four sector blocks 200 are connected and enclosed to form the annular plate structure 210, the fan-shaped protrusion structure surrounds to form an annular protrusion structure. In this way, when the locking plate 121 is installed, it is not necessary to rotate to a specific position so that the radial positioning portion and the radial matching portion 240 can be matched, thereby limiting the radial position of the sector block 200 relative to the positioning seat 111, and the installation and positioning effects are relatively good. It is conceivable that the radial positioning portion and the radial matching portion 240 may also be other structures and not limited to the above embodiments. For example, the radial positioning portion is a protrusion and the radial matching portion 240 is a groove; or the radial positioning portion is a plug-in hole and the radial matching portion 240 is a plug-in column directly processed on the fan-shaped block 200. When the locking plate 121 and the fan-shaped block 200 are installed together, the plug-in column is plugged into the plug-in hole.

[0066] Reference Figures 1 to 5 , further comprising a separation drive member 300, which is configured to apply a force to move the locking plate 121 away from the sector block 200. The locking plate 121 of the locking mechanism 120 is relatively large and heavy. When the locking plate 121 needs to be removed, it is not easy to separate the locking plate 121 from the sector block 200. The provision of the separation drive member 300 can more easily separate the locking plate 121 and the sector block 200, reducing the difficulty of separating the locking plate 121 from the sector block 200.

[0067] Specifically, the locking plate 121 is provided with a threaded through-hole, the axis of which is parallel to the axis of the inner hole. The separation driver 300 is configured as a threaded pusher, which is threadedly connected to the threaded through-hole, with one end of the threaded pusher facing the sector block 200. When the threaded pusher is rotated until it extends out of the threaded through-hole and one end of the threaded pusher abuts the sector block 200, the threaded pusher is further rotated, and the rotational force is converted into a thrust force, which can drive the locking plate 121 to separate from the sector block 200. The separation is relatively easy, and the separation distance is also easy to adjust.

[0068] Specifically, the separation drive member 300 is configured as an external hexagon screw. It is conceivable that the separation drive member 300 can also be other structures, for example, a threaded push member such as a hexagon socket screw or a countersunk screw. It is conceivable that the separation drive member 300 can also be other structures and is not limited to the above embodiment, for example, a wedge with an inclined surface, the wedge is slidably set on the locking plate 121, and when the wedge moves, the inclined surface abuts against the locking plate 121 or the sector block 200, and the locking plate 121 is lifted by the inclined surface, thereby separating the locking plate 121 and the sector block 200.

[0069] Reference Figures 1 to 5 In some embodiments, the angle of the sector block 200 does not exceed 180°, and the side of the sector block 200 adjacent to the positioning seat 111 is configured as an arc-shaped mating surface. The above-described structure of the sector block 200 allows the sector block 200 to be separated from the positioning seat 111 radially, rather than axially, making assembly and disassembly more convenient and flexible.

[0070] Reference Figures 1 to 5 , the rotation axis of the pressing wheel is eccentrically set. The rotation axis of the pressing wheel is eccentrically set, which makes the overall extrusion effect of the pressing wheel better, and is also convenient for feeding and adjusting the pressing wheel after wear. Specifically, the outer periphery of the positioning seat 111 is cylindrical. Specifically, the rotation axis of the pressing wheel is Figure 2 B marks the axis line.

[0071] Reference Figures 1 to 5 The pressure wheel is also provided with an eccentric sleeve 140. The positioning seat 111 is provided with a central through hole, and the eccentric sleeve 140 is inserted into the central through hole. If the eccentric sleeve 140 is worn, it can be replaced to repair the pressure wheel. The eccentric sleeve 140 enables the entire pressure wheel to move eccentrically. It is understood that when the eccentric sleeve 140 is replaced with a non-eccentric sleeve, the pressure wheel can rotate non-eccentrically.

[0072] Reference Figures 1 to 5 The pressure roller further includes a sealing cover 150 and a bearing 160. The bearing 160 is located in the central through hole, with the outer periphery of the bearing 160 abutting against the wall of the central through hole. The eccentric sleeve 140 is inserted into the inner periphery of the bearing 160. One end of the sealing cover 150 is connected to the positioning seat 111, and the other end of the sealing cover 150 is connected to the eccentric sleeve 140. The sealing cover 150 seals the bearing 160 between the eccentric sleeve 140 and the positioning seat 111, thereby reducing leakage of lubricating oil inside the bearing 160.

[0073] Specifically, the sealing cover 150 is provided with a first alignment groove, and the eccentric sleeve 140 is provided with a second alignment groove, and the first alignment groove and the second alignment groove are connected. The connection between the first alignment groove and the second alignment groove allows the sealing cover 150 and the eccentric sleeve 140 to be installed in place, thereby facilitating the alignment of the sealing cover 150 and the eccentric sleeve 140.

[0074] Specifically, a labyrinth seal structure is provided at the connection between the sealing cover 150 and the positioning seat 111. This seal seals the bearing 160 between the two sealing covers 150, thereby further reducing lubricant leakage. Specifically, the labyrinth seal structure comprises multiple annular raised plates on both the positioning seat 111 and the sealing cover 150, with a spacer cavity between the annular raised plates. The annular raised plates of the sealing cover 150 are inserted into the spacer cavity of the positioning seat 111, and the annular raised plates of the positioning seat 111 are inserted into the spacer cavity of the sealing cover 150, forming a multi-bend sealing structure.

[0075] Specifically, the sealing cover 150 is provided with a lubricating oil injection hole. The lubricating oil injection hole allows lubrication of the internal bearing 160 to be added without removing the sealing cover 150. The structure is simple and the use effect is relatively good.

[0076] Specifically, there are two sealing covers 150 , which are respectively located at both ends of the positioning seat 111 along the rotation axis. Both ends of the bearing 160 are sealed by the sealing covers 150 to accommodate the lubricating fluid inside.

[0077] Reference Figure 6 The pressing wheel includes a seat assembly 100 and four sector blocks 200; the sector blocks 200 are arranged on the seat assembly 100, and the sector blocks 200 form an annular plate structure 210. The outer peripheral side of the sector blocks 200 is provided with a rolling portion 220 radially protruding relative to the seat assembly 100, and the outer peripheral surface of the rolling portion 220 is enclosed to form a circular surface, and the sector blocks 200 are detachably arranged; the seat assembly 100 includes a main seat body 110 and a locking mechanism 120. The main seat body 110 is provided with a columnar positioning seat 111, and the outer periphery of the positioning seat 111 is provided with a flange plate 112. The annular plate structure 210 has a In the inner hole portion, the annular plate structure 210 is sleeved on the positioning seat 111 through the inner hole portion, and the locking and pressing mechanism 120 is detachably arranged on the positioning seat 111. The locking and pressing mechanism 120 and the flange plate 112 clamp and fix the sector block 200; the locking and pressing mechanism 120 includes a locking and pressing plate 121 and a threaded fastener 122. The locking and pressing plate 121 is detachably arranged on the positioning seat 111. The locking and pressing plate 121 and the flange plate 112 are respectively placed on opposite sides of the sector block 200. The threaded fastener 122 is used to clamp and fasten the sector block 200 with the flange plate 112; the method for replacing the sector block 200 of the pressure wheel includes but is not limited to the following steps:

[0078] S10: Disassembling the threaded fastener 122;

[0079] S20: Detach and separate the locking plate 121 from the sector block 200 and the main seat body 110;

[0080] S30: Disassembling and separating the sector block 200 from the main base body 110;

[0081] S40: Installing a new sector block 200 in place of the original sector block 200;

[0082] S50: Cover the locking plate 121 on the sector block 200;

[0083] S60 : Using the threaded fasteners 122 to clamp and fasten the locking plate 121 and the flange plate 112 to the sector block 200 .

[0084] Reference Figure 7 The pressure wheel further includes a separation drive member 300, which is configured to apply a force to move the locking plate 121 away from the sector block 200; the locking plate 121 is provided with a threaded through hole, the axis of the threaded through hole is arranged parallel to the axis of the inner hole, and the separation drive member 300 is configured as a threaded push member, which is threadedly connected to the threaded through hole, and one end of the threaded push member is opposite to the sector block 200; the method for replacing the sector block 200 of the pressure wheel further includes the following steps:

[0085] S21 : Rotate the threaded pushing member so that one end of the threaded pushing member extends out of the threaded through hole and presses against the sector block 200 , so that the locking plate 121 is separated from the sector block 200 .

[0086] Specifically, in the method for replacing the sector block 200 of the pressure wheel, step S21 is not required. The sector block 200 and the locking plate 121 can be directly separated by external force. First, the threaded fastener 122 is removed, and then the separation drive 300 can be used to drive the locking plate 121 to separate from the sector block 200 and remove the locking plate 121. Alternatively, the locking plate 121 can be directly removed, and then the sector block 200 can be separated from the flange plate 112 and the sector block 200 can be removed. In conjunction with the assembly method of the pressure wheel, the sector block 200 can be disassembled and replaced, thereby replacing and repairing the pressure wheel.

[0087] Specifically, the whole process of disassembling and replacing the sector block 200 of the pressure wheel of this embodiment is as follows: the threaded fastener 122 of the locking mechanism 120 is removed so that the locking plate 121 can be separated from the sector block 200, and then the separation drive 300 is used to drive the locking plate 121 to separate from the sector block 200, and the locking plate 121 is removed and removed, and then the old sector block 200 is removed from the seat body; the new sector blocks 200 are placed on the periphery of the positioning seat 111 in turn and are located on one side of the flange plate 112, and the four sector blocks 200 are surrounded to form an annular plate structure 210. In the process of placing the sector block 200 on the periphery of the positioning seat 111, the circumferential mating portion 230 is plugged into and mated with the circumferential positioning portion 130. Then, the locking plate 121 is used to cover the side of the sector block 200 away from the flange plate 112, and the threaded fastener 122 passes through the first through hole and the second through hole and is threadedly connected to the threaded hole, thereby re-locking the locking plate 121 and the flange plate 112. The locking plate 121 and the flange plate 112 clamp and fix the new sector block 200, thereby replacing and repairing the sector block 200 of the pressure wheel.

[0088] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A pressure wheel, characterized in that: include: A seat assembly (100); At least two fan-shaped blocks (200), the fan-shaped blocks (200) are arranged on the seat assembly (100), the fan-shaped blocks (200) form an annular plate structure (210), the outer peripheral side of the fan-shaped block (200) is provided with a rolling portion (220) radially protruding relative to the seat assembly (100), the outer peripheral surface of the rolling portion (220) encloses a circular surface, and the fan-shaped block (200) is detachably arranged; the seat assembly (100) The invention comprises a main seat body (110) and a locking mechanism (120), wherein the main seat body (110) is provided with a columnar positioning seat (111), the outer periphery of the positioning seat (111) is provided with a flange plate (112), the annular plate structure (210) has an inner hole portion adapted to the positioning seat (111), the annular plate structure (210) is sleeved on the positioning seat (111) through the inner hole portion, and the locking mechanism (120) is detachably provided on the positioning seat (111). The locking mechanism (120) and the flange plate (112) are used to clamp and fix the sector block (200); the locking mechanism (120) includes a locking plate (121) and a threaded fastener (122); the locking plate (121) is detachably arranged on the positioning seat (111); the locking plate (121) and the flange plate (112) are respectively arranged on opposite sides of the sector block (200); the threaded fastener (122) ) is used to clamp and fasten the locking plate (121) and the flange plate (112) to the sector block (200); the main seat (110) is provided with a circumferential positioning portion (130) corresponding one-to-one to the sector block (200), and the sector block (200) is provided with a circumferential matching portion (230) for matching with the corresponding circumferential positioning portion (130), and the circumferential positioning portion (130) is used to locate the circumferential position of the sector block (200).

2. The pressing wheel according to claim 1, wherein: The locking mechanism (120) and / or the flange plate (112) are provided with a radial positioning portion, and the sector block (200) is provided with a radial matching portion (240), and the radial positioning portion is used to abut against the radial matching portion (240) and limit the sector block (200) from moving radially outward relative to the positioning seat (111).

3. The pressing wheel according to claim 1, wherein: It also includes a separation drive member (300), and the separation drive member (300) is configured to apply a force to move the locking plate (121) away from the sector block (200).

4. The pressing wheel according to claim 3, characterized in that: The locking plate (121) is provided with a threaded through hole, the axis of the threaded through hole is arranged parallel to the axis of the inner hole portion, the separation drive member (300) is configured as a threaded push member, the threaded push member is threadedly connected to the threaded through hole, and one end of the threaded push member is opposite to the fan-shaped block (200).

5. The pressing wheel according to claim 1, characterized in that: Four sector blocks (200) are provided, and the angles of the four sector blocks (200) are the same.

6. A method for replacing a sector block of a pressure wheel, wherein the pressure wheel comprises a seat assembly (100) and at least two sector blocks (200); the sector blocks (200) are arranged on the seat assembly (100), the sector blocks (200) are surrounded by an annular plate structure (210), the outer peripheral side of the sector block (200) is provided with a rolling portion (220) radially protruding relative to the seat assembly (100), the outer peripheral surface of the rolling portion (220) is surrounded to form an annular surface, and the sector block (200) is detachably arranged; the seat assembly (100) comprises a main seat body (110) and a locking mechanism (120), the main seat body (110) is provided with a columnar positioning seat (111), the outer periphery of the positioning seat (111) is provided with a flange plate (112), and the annular plate structure (210) has a The inner hole portion of the positioning seat (111) is adapted, and the annular plate structure (210) is sleeved on the positioning seat (111) through the inner hole portion. The locking mechanism (120) is detachably arranged on the positioning seat (111), and the locking mechanism (120) and the flange plate (112) clamp and fix the fan-shaped block (200); the locking mechanism (120) includes a locking plate (121) and a threaded fastener (122), and the locking plate (121) is detachably arranged on the positioning seat (111), and the locking plate (121) and the flange plate (112) are respectively arranged on opposite sides of the fan-shaped block (200), and the threaded fastener (122) is used to enable the locking plate (121) and the flange plate (112) to clamp and fasten the fan-shaped block (200); it is characterized in that The method for replacing the sector blocks of the pressure wheel comprises: Removing the threaded fastener (122); The locking plate (121) is disassembled and separated from the sector block (200) and the main seat body (110); Disassembling and separating the sector block (200) from the main seat body (110); Installing the new sector block (200) in place of the original sector block (200); The locking plate (121) is covered on the sector block (200); The threaded fastener (122) is used to clamp and fasten the locking plate (121) and the flange plate (112) to the sector block (200).

7. The method for replacing the sector block of the pressure wheel according to claim 6, wherein the pressure wheel further comprises a separation drive member (300), and the separation drive member (300) is configured to apply a force to move the locking plate (121) away from the sector block (200); the locking plate (121) is provided with a threaded through hole, the hole axis of the threaded through hole is arranged parallel to the hole axis of the inner hole portion, and the separation drive member (300) is configured as a threaded push member, the threaded push member is threadedly connected to the threaded through hole, and one end of the threaded push member is opposite to the sector block (200); it is characterized in that, The method for disassembling and separating the locking plate (121) from the sector block (200) and the main seat body (110) comprises: The threaded pushing piece is rotated, and one end of the threaded pushing piece is extended out of the threaded through hole and abuts against the sector block (200), so that the locking plate (121) is separated from the sector block (200).

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