Extruder reducer low-speed shaft fixing device

Abstract

This utility model relates to a low-speed shaft fixing device for an extruder reducer in the field of low-speed shaft technology. When the low-speed shaft fixing device provided by this utility model needs to be adapted to low-speed shafts of different sizes, the low-speed shaft passes through the middle of the corresponding bearing, and one end of the low-speed shaft with a slot extends to the middle of the fixing sleeve. Multiple adjusting components are pushed, causing the first trapezoidal block to push against the second trapezoidal block. The second trapezoidal block, acting as a substitute for the moving block, moves closer to the low-speed shaft, and the locking block simultaneously engages in the slot. Then, shims of different thicknesses are selected as needed. When the bolts are tightened, the limiting plate pushes multiple adjusting components, causing the adjusting components to push against the locking components, which in turn cause multiple locking components to clamp the low-speed shaft. Because the limiting plate simultaneously presses against multiple adjusting components, the locking components can continuously clamp one end of the low-speed shaft without loosening.

Description

Technical Field

[0001] This utility model relates to the field of low-speed shaft technology, and in particular to a low-speed shaft fixing device for an extruder reducer. Background Technology

[0002] Extruders are widely used in many industries such as plastics, rubber, and food. As one of the core components of an extruder, the speed reducer's low-speed shaft bears a large torque and axial force during operation. Therefore, a reliable fixing device is required to ensure its stability and accuracy during operation.

[0003] For example, Chinese Patent Application No. CN202022228521.6 discloses a low-speed shaft fixing device for a dewatering extruder reducer. The specific details are as follows: During use, first consult the equipment's accompanying data and the clearance adjustment specifications for a single-row tapered roller thrust bearing. Based on the clearance, select the appropriate shim thickness to adjust the axial clearance of the low-speed shaft to a suitable level. Then, by fitting the positioning plate, boss, and concave hole together, the radial movement of the positioning plate relative to the low-speed shaft is overcome. The non-fully threaded fixing bolt's smooth rod positioning plate is fitted together, reducing the gap between the fixing bolt and the mounting hole on the positioning plate to a suitable size, thus overcoming the circumferential movement of the positioning plate. This solves the shear force generated on the fixing bolt by the positioning plate during radial or circumferential movement, addressing the loosening problem of the positioning plate and fixing bolt. This ensures both the clearance of the thrust bearing and the tight fastening of the positioning plate and the low-speed shaft head. This invention solves the problem of frequent breakage of positioning bolts through structural improvements, effectively ensuring the safe and stable operation of the rubber post-processing dehydration extruder. However, it still has the following technical problems:

[0004] When dealing with extruders of different sizes and specifications, the above structure requires various sizes of fixing devices for the low-speed shaft of the reducer. It is evident that the low-speed shaft fixing devices provided by the above structure are difficult to adapt to low-speed shafts of different sizes. Summary of the Invention

[0005] To address the problem mentioned in the background section that the existing low-speed shaft fixing devices are difficult to adapt to low-speed shafts of different sizes, this utility model provides the following technical solution:

[0006] A device for fixing the low-speed shaft of an extruder reducer includes a fixing structure for securing the low-speed shaft.

[0007] The external mounting of the fixed structure includes a fixing sleeve and a limiting plate for limiting the position of the fixed structure.

[0008] The fixing structure includes a fixing block, and a plurality of locking components for clamping low-speed shafts of different sizes are installed on one side of the fixing block. An adjustment component for controlling the movement of the locking component is installed at one end of the locking component.

[0009] Furthermore, the low-speed shaft has multiple slots at one end facing the locking assembly, and a bearing for stabilizing the low-speed shaft is installed on one side of the fixing sleeve.

[0010] Furthermore, a plurality of bolts are installed on one side of the limiting plate, an annular groove is provided on the side of the limiting plate facing the adjusting component, and a gasket is installed on the side of the limiting plate facing the fixing sleeve.

[0011] Furthermore, a first groove is provided on one side of the fixing block, a second groove is provided on one side of the first groove, and a third groove is provided on the other side of the first groove.

[0012] Furthermore, the adjusting assembly includes a slide rod, one end of which is fitted with a first trapezoidal block for pushing the locking assembly, and the other end of which is fitted with a ball bearing that rolls within an annular groove.

[0013] Furthermore, the locking component includes a movable block that slides within a slide groove, a second trapezoidal block being mounted at one end of the movable block, and two rolling balls that roll within a slide groove being mounted on both sides of the movable block and the second trapezoidal block.

[0014] Furthermore, a slider that slides within the second slide groove is installed on one side of the moving block, a locking block for engaging with the slot is installed on the side of the moving block facing the low-speed shaft, and a triangular block for increasing the mechanical strength of the locking assembly is installed on one side of the moving block.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] When the low-speed shaft fixing device provided by this utility model needs to be adapted to low-speed shafts of different sizes, the low-speed shaft is passed through the middle of the corresponding bearing, and the end of the low-speed shaft with the slot extends to the middle of the fixing sleeve. Multiple adjustment components are pushed, so that the first trapezoidal block pushes the second trapezoidal block. The second trapezoidal block moves closer to the low-speed shaft instead of the moving block, and the locking block is simultaneously locked into the slot. Then, shims of different thicknesses are selected as needed. When the bolts are tightened, the limiting plate pushes multiple adjustment components, so that the adjustment components push the locking components, causing multiple locking components to clamp the low-speed shaft. Since the limiting plate presses multiple adjustment components at the same time, the locking components can continuously clamp one end of the low-speed shaft without loosening. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the fixing structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0020] Figure 4 This is a schematic diagram of the locking component of this utility model.

[0021] The following is a list of component names represented by the various reference numerals in the attached figures:

[0022] 10-Low speed shaft, 11-Slot, 20-Fixing sleeve, 21-Bearing, 30-Limiting plate, 31-Bolt, 32-Annular groove, 33-Shim;

[0023] 100-Fixed structure, 110-Fixed block, 111-Slide groove one, 112-Slide groove two, 113-Slide groove three, 120-Adjusting component, 121-First trapezoidal block, 122-Slide rod, 123-Ball ball one, 130-Locking component, 131-Moving block, 132-Second trapezoidal block, 133-Slider, 134-Clocking block, 135-Triangle block, 136-Ball ball two. Detailed Implementation

[0024] The preferred embodiments of this utility model are described in detail below, and a clear and complete explanation is given in conjunction with the accompanying drawings.

[0025] Please see Figures 1-4 This utility model provides a low-speed shaft fixing device for an extruder reducer, including a fixing structure 100 for stabilizing the low-speed shaft 10. A fixing sleeve 20 and a limiting disc 30 are installed externally on the fixing structure 100 for limiting its position. A bearing 21 for stabilizing the low-speed shaft 10 is installed on one side of the fixing sleeve 20, and the bearing 21 is sleeved on the outside of the low-speed shaft 10. This utility model, through the arrangement of the bearing 21 and the fixing structure 100, avoids the low-speed shaft 10 from bearing large torques and axial forces during operation, thereby ensuring the stability of the low-speed shaft 10's operation.

[0026] The fixing structure 100 includes a fixing block 110. Four locking components 130 for clamping low-speed shafts 10 of different sizes are installed on one side of the fixing block 110. The low-speed shaft 10 has four slots 11 at one end facing the locking components 130, and two adjacent slots 11 are perpendicular to each other. The slots 11 at one end of the low-speed shafts 10 of different sizes are all the same size. An adjusting component 120 for controlling the movement of the locking components 130 is installed at one end of the locking components 130.

[0027] Multiple bolts 31 are installed on one side of the limiting plate 30. The fixing sleeve 20 has threaded holes, and the bolts 31 are threaded into the threaded holes on the fixing sleeve 20. The limiting plate 30 has an annular groove 32 on the side facing the adjusting component 120. A washer 33 is installed on the side of the limiting plate 30 facing the fixing sleeve 20, and the washer 33 has a cavity for the bolts 31 to pass through, so that the bolts 31 can not only fix the limiting plate 30, but also position the washer 33. The washer 33 provided by this utility model has a variety of thicknesses, so that different thicknesses of washer 33 can be selected according to the low-speed shaft 10 of different diameters. When stabilizing the low-speed shaft 10 of different diameters, different specifications of bearings 21 can be replaced.

[0028] A first groove 111 is provided on one side of the fixed block 110, a second groove 112 is provided on one side of the first groove 111, and a third groove 113 is provided on the other side of the first groove 111. The adjusting component 120 includes a slide rod 122. A first trapezoidal block 121 for pushing the locking component 130 is fixedly installed at one end of the slide rod 122, and a ball bearing 123 that rolls in the annular groove 32 is movably installed at the other end of the slide rod 122. When the low-speed shaft 10 rotates, the fixed structure 100 synchronously drives the adjusting component 120 to rotate on one side of the limiting plate 30, and the ball bearing 123 rolls in the groove of the annular groove 32.

[0029] The locking assembly 130 includes a movable block 131 that slides within the slide groove 111. A second trapezoidal block 132 is fixedly mounted on one end of the movable block 131, and the inclined surface of the second trapezoidal block 132 is in contact with the inclined surface of the first trapezoidal block 121, so that when the first trapezoidal block 121 moves, it pushes the inclined surface of the second trapezoidal block 132, which facilitates the adjustment of the distance between the movable block 131 and the low-speed shaft 10.

[0030] Both sides of the movable block 131 and the second trapezoidal block 132 are movably mounted with ball bearings 136 that roll within the slide groove 113. The rolling of the ball bearings 136 within the slide groove 113 prevents the locking component 130 from jamming due to excessive friction within the slide groove 111. A slider 133 is fixedly mounted on one side of the movable block 131 and slides within the slide groove 112. The slider 133 allows the locking component 130 to move vertically within the fixed block 110. A locking block 134 for engaging with a slot 11 is fixedly installed on the side of the moving block 131 facing the low-speed shaft 10. When the locking block 134 engages with the slot 11, the low-speed shaft 10 rotates, which can synchronously drive the locking component 130 to revolve around the low-speed shaft 10. The locking component 130 also synchronously drives the fixed block 110 to rotate. The fixed structure 100 rotating within the fixed sleeve 20 can reduce the axial force when the low-speed shaft 10 rotates, ensuring the stability of the low-speed shaft 10 during rotation.

[0031] A triangular block 135 is fixedly installed on the side of the movable block 131 near the locking block 134 to increase the mechanical strength of the locking assembly 130. One side of the triangular block 135 is in contact with the second trapezoidal block 132, and the other side of the triangular block 135 is in contact with the movable block 131. This makes it difficult for the second trapezoidal block 132 to deform when the first trapezoidal block 121 pushes it. The locking block 134 is engaged in the slot 11. When the movable block 131 clamps the low-speed shaft 10, the triangular block 135 prevents the movable block 131 from deforming.

[0032] When the low-speed shaft fixing device provided by this utility model needs to be adapted to low-speed shafts 10 of different sizes, the low-speed shaft 10 is passed through the middle of the corresponding bearing 21, and the end of the low-speed shaft 10 with the slot 11 extends to the middle of the fixing sleeve 20. Multiple adjustment components 120 are pushed, so that the first trapezoidal block 121 pushes the second trapezoidal block 132. The second trapezoidal block 132 replaces the moving block 131 and moves closer to the low-speed shaft 10. The locking block 134 is simultaneously locked into the slot 11. Then, shims 33 of different thicknesses are selected as needed. When the bolt 31 is tightened, the limiting plate 30 pushes multiple adjustment components 120, so that the adjustment components 120 push the locking components 130, causing multiple locking components 130 to clamp the low-speed shaft 10. Since the limiting plate 30 presses multiple adjustment components 120 at the same time, the locking components 130 can be continuously clamped at one end of the low-speed shaft 10 without loosening.

[0033] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this utility model. Furthermore, any non-creative modifications made to this utility model by those skilled in the art without inventive effort are still within the protection scope of this utility model.

Claims

1. A low-speed shaft fixing device for an extruder reducer, comprising a fixing structure (100) for stabilizing the low-speed shaft (10), characterized in that: The fixing structure (100) is externally mounted with a fixing sleeve (20) and a limiting plate (30) for limiting the fixing structure (100). The fixing structure (100) includes a fixing block (110), on one side of which a plurality of locking components (130) for clamping low-speed shafts (10) of different sizes are installed, and at one end of the locking component (130) an adjusting component (120) for controlling the movement of the locking component (130) is installed.

2. The extruder reducer low speed shaft fixation device according to claim 1, characterized in that: The low-speed shaft (10) has multiple slots (11) at one end facing the locking assembly (130), and a bearing (21) for stabilizing the low-speed shaft (10) is installed on one side of the fixing sleeve (20).

3. The extruder reducer low speed shaft fixation device according to claim 1, characterized in that: Multiple bolts (31) are installed on one side of the limiting plate (30), and an annular groove (32) is provided on the side of the limiting plate (30) facing the adjusting assembly (120). A gasket (33) is installed on the side of the limiting plate (30) facing the fixing sleeve (20).

4. The extruder reducer low speed shaft fixation device according to claim 2, characterized in that: The fixing block (110) has a sliding groove 1 (111) on one side, a sliding groove 2 (112) on one side, and a sliding groove 3 (113) on the other side.

5. The extruder reducer low speed shaft fixation device according to claim 3, characterized in that: The adjustment assembly (120) includes a slide bar (122), one end of which is fitted with a first trapezoidal block (121) for pushing the locking assembly (130), and the other end of which is fitted with a ball bearing (123) that rolls in an annular groove (32).

6. The extruder reducer low speed shaft fixation device according to claim 4, characterized in that: The locking component (130) includes a movable block (131) that slides in a first groove (111), a second trapezoidal block (132) is installed at one end of the movable block (131), and two balls (136) that roll in a third groove (113) are installed on both sides of the movable block (131) and the second trapezoidal block (132).

7. The extruder reducer low speed shaft fixation device according to claim 6, characterized in that: A slider (133) that slides in the second slide groove (112) is installed on one side of the moving block (131). A locking block (134) for engaging with the slot (11) is installed on the side of the moving block (131) facing the low-speed shaft (10). A triangular block (135) for increasing the mechanical strength of the locking assembly (130) is installed on one side of the moving block (131).

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