Adjusting device for adjusting meshing clearance between fixed transmission small gear and large gear ring of rotary kiln

Abstract

The utility model provides an adjusting device for adjusting a meshing clearance between a fixed transmission small gear and a large gear ring of a rotary kiln. The adjusting device comprises a jackscrew seat, a jackscrew rod and a base plate, a small tooth holder of the rotary kiln is fixed to the base through a fixing piece, a jackscrew seat is fixed to the base and located on the side face of the small tooth holder, a jackscrew rod penetrates through the jackscrew seat, the end, extending out of the jackscrew seat, of the jackscrew rod abuts against the small tooth holder, and a base plate is embedded between the jackscrew seat and the small tooth holder. The jackscrew seat is arranged on the side face of the small tooth seat, and the jackscrew rod is supported by the jackscrew seat. When the meshing clearance between the transmission small tooth and the large tooth ring needs to be adjusted, the bolt fixing piece of the small tooth holder is loosened firstly, then the jackscrew rod is used for jacking the small tooth holder to reach the required meshing clearance, and then the base plate is cushioned between the jackscrew rod and the small tooth holder, so that the jackscrew rod can be loosened. And finally, the small tooth holder bolt fixing piece is tightened, and tooth clearance adjustment can be completed. Therefore, the device can realize tooth clearance adjustment in a non-stop state, so that the rotary kiln can operate stably.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, and in particular to an adjusting device for adjusting the meshing gap between the small gear and the large gear ring of the rotary kiln's fixed drive. Background Technology

[0002] During the pellet production process, the pellets are roasted at high temperature (around 1100-1200℃) in a rotary kiln. Under the rotation and tilting angle of the rotary kiln, the pellets fall onto a fixed screen and are cooled from the gaps in the fixed screen onto the ring cooler trolley. After three stages of cooling, the pellets fall onto the finished product conveyor belt through the unloading hopper of the ring cooler and are carried to the finished product warehouse.

[0003] Due to the effects of high temperature and gravity, the rotary kiln cylinder inevitably deforms, its deflection increases, the meshing gap of the transmission gears decreases, causing "tooth chipping," and the cylinder vibrates greatly during operation, which can easily lead to malfunctions such as loosening or damage of related components. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustment device for adjusting the meshing clearance between the small tooth and the large gear ring of the rotary kiln solid drive, which can adjust the position of the small tooth seat and thus adjust the meshing clearance between the small tooth and the large gear ring.

[0005] This utility model provides an adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of a rotary kiln, including a set screw seat, a set screw rod, and a pad. The small gear seat of the rotary kiln is fixed to the base by a fixing member. The set screw seat is fixed to the base and located on the side of the small gear seat. The set screw rod passes through the set screw seat, and the end of the set screw rod extending out of the set screw seat abuts against the small gear seat. The pad is embedded between the set screw seat and the small gear seat.

[0006] Furthermore, the fastener includes bolts.

[0007] Furthermore, the set screw seat includes a baffle and two ribs, the two ribs being spaced apart and connected to the end face of the baffle away from the small tooth seat.

[0008] Furthermore, the baffle is provided with a hole for the top screw to pass through.

[0009] Furthermore, the pad is disposed between the baffle and the small tooth seat.

[0010] Furthermore, the hole on the baffle is located between the two stiffening plates, and the top screw passes through the space between the two stiffening plates.

[0011] Furthermore, the stiffener has a trapezoidal structure, and the upper end of the stiffener away from the baffle is an inclined surface.

[0012] Furthermore, both the baffle and the stiffening plate are welded and fixed to the base.

[0013] Furthermore, at least one set screw seat is provided on each side of the small tooth seat, and the set screw seats on both sides are arranged opposite to each other.

[0014] Furthermore, the end of the top screw that abuts against the small toothed seat has a pointed structure.

[0015] The technical solution of this utility model involves setting a set screw seat on the side of the small gear seat and using the set screw seat to support the set screw rod. When the meshing clearance between the small gear and the large gear ring needs to be adjusted, first loosen the bolt fixing parts of the small gear seat, then use the set screw rod to push the small gear seat to achieve the required meshing clearance, then insert a shim between the set screw seat and the small gear seat, and the set screw rod can be loosened. Finally, tighten the bolt fixing parts of the small gear seat to complete the gear clearance adjustment. Thus, this device can achieve gear clearance adjustment without stopping the machine, allowing the rotary kiln to operate stably. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a side view of the set screw seat of this utility model;

[0019] Figure 3 This is a front view schematic diagram of the set screw seat of this utility model;

[0020] Figure 4 This is a schematic diagram of the top screw structure of this utility model;

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Setting screw seat; 2-Small tooth seat; 3-Base; 4-Baffle; 5-Rib plate; 6-Setting screw rod; Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1

[0027] like Figures 1-4 As shown, this utility model provides an adjustment device for adjusting the meshing gap between the small gear and the large gear ring of a rotary kiln, including a top screw seat 1, a top screw rod 6, and a pad (not shown); the small gear seat 2 of the rotary kiln is fixed to the base 3 by a fixing member, the top screw seat 1 is fixed to the base 3 and located on the side of the small gear seat 2, the top screw rod 6 passes through the top screw seat 1, and the end of the top screw rod 6 extending out of the top screw seat 1 abuts against the small gear seat 2, and the pad is embedded between the top screw seat 1 and the small gear seat 2.

[0028] Specifically, a rotary kiln is a thin-walled steel cylinder mounted at an angle on a support device. Inside the kiln, the material tumbles circumferentially while moving axially, thus slowly flowing through the entire cylinder. A large gear is connected to the cylinder, and a small gear is located below the cylinder to drive the large gear and consequently rotate the cylinder. This structure is existing technology for rotary kilns, and its structural principle will not be elaborated further.

[0029] The small gear seat 2 is fixed to the base 3 by a fastener. When the gear gap needs to be adjusted, the small gear seat 2 can be moved on the base 3 by loosening the bolt positioning piece. The set screw seat 1 has an M64 screw hole and a set screw rod 6 M64*250mm is machined. The set screw seat 1 is fixed to the side of the small gear seat 2 on the base 3 (the side of the small teeth that is subjected to longitudinal force, i.e., the inner side of the rotary kiln's rotation direction). The set screw rod 6 is inserted into the screw hole. When the set screw rod 6 is pushing the small gear seat 2, the set screw seat 1 can provide support for the set screw rod 6.

[0030] To adjust the gear backlash, first loosen the positioning bolt of the small gear seat 2, then use the set screw 6 to push the small gear seat 2. When the transmission small gear meshes with the large gear ring to achieve the required gap, place the shim between the set screw seat 1 and the small gear seat 2. Since the set screw seat 1 is fixed, the position of the small gear seat 2 is also fixed. Then, loosen the set screw 6 and tighten the bolt of the small gear seat 2 to complete the gear backlash adjustment.

[0031] Multiple shims of different thicknesses can be prepared, and different thickness shims can be inserted to adjust the tooth gap as needed during insertion. Alternatively, multiple thin shims can be prepared, and different numbers of shims can be inserted to adjust the tooth gap as needed until the requirements are met.

[0032] Example 2

[0033] Fasteners include bolts.

[0034] Specifically, the small gear seat 2 is loosely fixed to the base 3 by bolts. The diameter of the hole on the base 3 for the bolt to pass through is larger than the diameter of the screw hole on the small gear seat 2. Therefore, when the bolts are loosened, the position of the small gear seat 2 can be finely adjusted within the range of the hole diameter on the base 3 for the bolt to pass through, until the meshing clearance between the transmission small gear and the large gear ring is appropriate.

[0035] Example 3

[0036] The set screw seat 1 includes a baffle 4 and two stiffening plates 5, which are spaced apart and connected to the end face of the baffle 4 away from the small gear seat 2. The baffle 4 has a hole for the set screw rod 6 to pass through. A pad is located between the baffle 4 and the small gear seat 2. The hole on the baffle 4 is located between the two stiffening plates 5, and the set screw rod 6 passes through the space between the two stiffening plates 5. The stiffening plate 5 has a trapezoidal structure, with an inclined surface on the upper end of the stiffening plate 5 away from the baffle 4. Both the baffle 4 and the stiffening plates 5 are welded and fixed to the base 3.

[0037] Specifically, the set screw seat 1 consists of a baffle 4 and two stiffening plates 5. The baffle 4 is vertically positioned and parallel to the side of the small gear seat 2, while the stiffening plates 5 are vertically positioned and perpendicular to the side of the small gear seat 2. A screw hole M64 for the set screw rod 6 to pass through is provided on the baffle 4 and located at the center of the connection between the two stiffening plates 5. The outer wall of the set screw rod 6 has external threads, and the set screw rod 6 passes through and is threaded into the screw hole. Thus, with the support of the baffle 4, the set screw rod 6 can be driven into the small gear seat 2 by turning it. The trapezoidal structure of the stiffening plates 5 supports the baffle 4, preventing the embedded pad from forcing the baffle 4 to deform. Furthermore, the upper end of the stiffening plate 5 has a bevel forming a notch, which increases the operating area of ​​the set screw rod 6. Both the baffle 4 and the stiffening plates 5 are welded to the base 3, thus the entire set screw seat 1 is completely fixed to the base 3.

[0038] Example 4

[0039] At least one set screw seat 1 is provided on each side of the small tooth seat 2, and the set screw seats 1 on both sides are arranged opposite to each other.

[0040] Specifically, set screw seats 1 are provided on both sides of the small tooth seat 2, so that the position of the small tooth seat 2 can be adjusted from two opposite directions, which can be adjusted for cases of excessively deep or shallow meshing.

[0041] Example 5

[0042] The end of the lead screw 6 that abuts against the small tooth seat 2 has a pointed structure.

[0043] Specifically, the tip structure of the top screw 6 facilitates positioning and avoids eccentricity during the insertion process.

[0044] The working principle of this utility model is as follows:

[0045] A set screw seat 1 is installed on the side of the small gear seat 2, and the set screw seat 1 supports the set screw rod 6. When the meshing clearance between the small gear and the large gear ring needs to be adjusted, first loosen the bolt fixing parts of the small gear seat 2, then use the set screw rod 6 to push the small gear seat 2 to achieve the required meshing clearance, then place a shim between the set screw seat 1 and the small gear seat 2, and the set screw rod 6 can be loosened. Finally, tighten the bolt fixing parts of the small gear seat 2 to complete the gear clearance adjustment. Thus, this device can achieve gear clearance adjustment without stopping the machine, allowing the rotary kiln to operate stably.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of a rotary kiln's fixed drive, characterized in that, Includes set screw seat, set screw rod and backing plate; The small toothed seat of the rotary kiln is fixed to the base by a fastener. The set screw seat is fixed to the base and located on the side of the small toothed seat. The set screw rod passes through the set screw seat, and the end of the set screw rod extending out of the set screw seat abuts against the small toothed seat. The pad is embedded between the set screw seat and the small toothed seat.

2. The adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of the rotary kiln's fixed drive according to claim 1, characterized in that, The fasteners include bolts.

3. The adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of the rotary kiln's fixed drive according to claim 1, characterized in that, The set screw seat includes a baffle and two ribs, the two ribs being spaced apart and connected to the end face of the baffle away from the small tooth seat.

4. The adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of the rotary kiln's fixed drive according to claim 3, characterized in that, The baffle plate is provided with a hole for the top screw to pass through.

5. The adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of the rotary kiln's fixed drive according to claim 4, characterized in that, The pad is located between the baffle and the small tooth seat.

6. The adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of the rotary kiln's fixed drive according to claim 3, characterized in that, The hole on the baffle is located between the two stiffening plates, and the top screw passes through the space between the two stiffening plates.

7. The adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of the rotary kiln's fixed drive according to claim 3, characterized in that, The stiffener plate has a trapezoidal structure, and the upper end of the stiffener plate away from the baffle is an inclined surface.

8. The adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of the rotary kiln's fixed drive according to claim 3, characterized in that, Both the baffle and the stiffening plate are welded and fixed to the base.

9. The adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of the rotary kiln's fixed drive according to claim 3, characterized in that, At least one set screw seat is provided on each side of the small tooth seat, and the set screw seats on both sides are arranged opposite to each other.

10. The adjusting device for adjusting the meshing clearance between the small gear and the large gear ring of the rotary kiln's fixed drive according to claim 1, characterized in that, The end of the set screw that abuts against the small toothed seat has a pointed structure.

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