A rubber elastic adjustment seat for a sweeper

Abstract

This utility model discloses a rubber elastic adjustment seat for a sweeper, relating to the field of belt sweeping technology. The rubber elastic adjustment seat includes a bracket, a rubber tensioning assembly, and a torque generator assembly. The rubber tensioning assembly includes an outer fixed sleeve, an inner fixed sleeve, a rubber torque strip disposed in the gap between the outer and inner fixed sleeves, and sealing caps sealing both ends of the outer fixed sleeve. One end of the inner fixed sleeve extends to the outside of the outer fixed sleeve, and the rubber torque strip is interference-fitted with the gap. The torque generator assembly includes a connecting end plate sleeved on one side of the inner fixed sleeve away from the outer fixed sleeve, and a sleeve integrally connected through the other side of the connecting end plate, the sleeve being located on the side closer to the inner fixed sleeve. This adjustment seat, through the sealing caps, keeps the elastic torque strip around the inside of the rubber tensioning assembly in a closed space, avoiding interference from the external environment, improving the service life of the rubber tensioning assembly, and thus improving the overall stability of the adjustment seat.

Description

Technical Field

[0001] This utility model relates to the technical field of belt sweeping equipment, specifically to a rubber elastic adjustment seat for a sweeper. Background Technology

[0002] During belt sweeping operations, the engine transmits power to the working parts through the drive shaft. However, the actual working conditions of belt sweepers are complex, and the working parts are easily jammed by the swept material, resulting in excessive torque. When the actual torque is too high and exceeds the rated torque, it can easily damage the drive shaft and other transmission components. Therefore, a torque converter is connected to the drive shaft to protect the transmission components.

[0003] Chinese patent literature discloses a second-stage torque polyurethane cleaner [Application No.: CN201821125648.1; Publication No.: CN208499593U], which includes a drive shaft. Multiple rubber torque scrapers are movably connected to the middle of the drive shaft through a blade holder. Both ends of the drive shaft are supported by symmetrically arranged elastic support seats. The elastic support seats consist of a fixed seat and a lifting seat. When the rubber torque scrapers wear out, the rubber torque scrapers and the belt always maintain appropriate contact pressure under the action of the elastic support seats, ensuring the working efficiency of the rubber torque scrapers. The torsion frame contains a hollow frame with a square cross-section, and the torsion shaft also has a square cross-section. The diagonal length of the torsion shaft's cross-section is the same as the side length of the hollow frame. The torsion shaft is diagonally supported within the hollow frame, and four elastic torsion bars are inserted between the torsion shaft and the hollow frame. When cleaning material accumulated on the conveyor belt, the torsion shaft will twist relative to the hollow frame. Under the action of the elastic torsion bars, the elastic torsion bars will restrict the rotation between the torsion shaft and the hollow frame, which can buffer the vibration when the polyurethane blade comes into contact with the accumulated material, thus extending the service life of the rubber torsion scraper while ensuring the cleaning effect.

[0004] However, in the aforementioned torque generator, both sides of the torque frame are open, which means that the elastic torque strips inside the torque frame are in an unclosed space, making them susceptible to interference from the external environment. This can cause the elastic torque strips to run out from both sides of the torque frame, resulting in insufficient stability of the torque generator. Utility Model Content

[0005] In view of this, the main purpose of this utility model is to propose a rubber elastic adjustment seat for a sweeper, so as to solve the technical problems of insufficient service life and stability of existing adjustment seats due to external influences.

[0006] To achieve the above objectives, this utility model proposes a rubber elastic adjustment seat for a sweeper, comprising:

[0007] support;

[0008] A rubber tensioning assembly includes an outer fixing sleeve that is adjustablely mounted on the bracket, an inner fixing sleeve fitted inside the outer fixing sleeve, a rubber torsion strip disposed in the gap between the outer fixing sleeve and the inner fixing sleeve, and sealing caps that seal both ends of the outer fixing sleeve. One end of the inner fixing sleeve extends to the outside of the outer fixing sleeve, and the rubber torsion strip is interference-fitted with the gap.

[0009] The torque converter assembly includes a connecting end plate that is sleeved on one side of the inner fixed sleeve at the end away from the outer fixed sleeve, and a sleeve integrally connected through the other side of the connecting end plate. The sleeve is located on the side close to the inner fixed sleeve, and the sleeve is parallel to the central axis of the inner fixed sleeve.

[0010] Optionally, the bracket includes an integrally vertically connected support base and a side connecting frame, the side connecting frame being located at one bottom end of the support base; the support base has a strip-shaped hole extending along the length direction, and a base plate is fixedly connected to the bottom of the outer fixing sleeve, the base plate being adjustablely mounted on the support base through the strip-shaped hole.

[0011] Optionally, the base plate has first locking holes on both sides of the outer fixing sleeve, corresponding to the positions of the strip holes. First fasteners are connected through the first locking holes and the strip holes to fix the outer fixing sleeve to the support base.

[0012] Optionally, the first fastener is a first bolt passing through the first locking hole and the strip hole, and a nut threaded onto the first bolt.

[0013] Optionally, it further includes a first adjusting fastening component for adjusting the displacement of the rubber tensioning component, the first adjusting fastening component being adapted to adjust the position of the rubber tensioning component on the support base when the first fastener is loosened.

[0014] Optionally, the first adjusting fastening assembly includes:

[0015] A right-angle plate, the bottom of which is fixedly connected to the upper surface of the supporting base frame;

[0016] Two nut seats are symmetrically connected to both sides of the top of the right-angle plate;

[0017] The second bolt is threaded through the two said nut seats and the right angle plate, and the second bolt is adapted to press vertically against the outer surface of the outer fixing sleeve.

[0018] Optionally, it also includes:

[0019] A plurality of second adjusting fastening components are evenly distributed on the outer peripheral wall of the inner fixing sleeve located between the connecting end plate and the outer fixing sleeve; a torsion bar is adapted to be inserted into the inner fixing sleeve, and the second adjusting fastening components are adapted to press against the torsion bar to fix the torsion bar and the inner fixing sleeve.

[0020] Several third adjusting and fastening components are installed on the top and side walls of the sleeve. The sleeve is adapted to have a base tube inserted inside. The third adjusting and fastening components are adapted to press vertically against the outer circumference of the base tube.

[0021] Optionally, the cross-section of the rubber torsion strip is cylindrical.

[0022] Optionally, mounting holes are provided on both sides of the side connecting frame, and the side connecting frame is fixedly connected to the external platform through the mounting holes and screws passing through the mounting holes.

[0023] Optionally, both the second and third adjusting fastening components are provided in pairs.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] In this invention, the rubber elastic adjustment seat for the sweeper includes a bracket, a rubber tensioning assembly, and a torque converter assembly. The sweeping scraper generates resistance on the belt surface, which is then transmitted to the sleeve, causing the sleeve to experience torque. This torque is then sequentially transmitted to the connecting end plate, the inner fixing sleeve, and the rubber torque strip. The rubber torque strip undergoes shear / torsional elastic deformation, generating a rebound torque that reacts to the sweeping scraper, ensuring the scraper remains firmly against the belt. When the belt surface experiences unevenness or changes in the thickness of adhering material, resistance fluctuations cause the rubber torque strip to adjust its torque in real time through elastic deformation, preventing rigid impacts. For overall preload adjustment: loosening the connecting bolts between the bracket and the outer fixing sleeve and changing the initial installation angle or height of the outer fixing sleeve alters the initial torsion angle of the rubber torque strip, achieving stepless elastic adjustment. Therefore, the shear deformation of the rubber torsion strip can respond instantaneously to changes in resistance, achieving "elastic floating" and avoiding uneven pressure caused by resonance or fatigue in traditional helical springs; the combination of the sealing cap and the interference fit forms a labyrinth + compression double seal, preventing dust from entering the gap and making the rubber less prone to aging; at the same time, the rubber torsion strip is in a closed cavity, free from ultraviolet and ozone corrosion, and its lifespan is 2-3 times longer than that of exposed elastic torsion strips. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of the rubber elastic adjustment seat for the cleaner in an embodiment of this utility model;

[0028] Figure 2 This is a schematic diagram of the main structure of the rubber elastic adjustment seat for the sweeper in this embodiment of the present invention;

[0029] Figure 3 This is a side view of the rubber elastic adjustment seat for the cleaner according to an embodiment of the present utility model;

[0030] Figure 4 This is a top view of the rubber elastic adjustment seat for the cleaner in an embodiment of this utility model.

[0031] Explanation of icon numbers:

[0032] 1-Bracket; 11-Support base; 111-Strip hole; 12-Side connecting bracket; 121-Mounting hole;

[0033] 2-Rubber tensioning assembly; 21-Outer square fixing sleeve; 211-Base plate; 2111-First locking hole; 22-Inner square fixing sleeve; 23-Rubber torsion strip; 24-Sealing cover;

[0034] 3-Torquer assembly; 31-Connecting end plate; 32-Sleeve;

[0035] 4-First adjusting and fastening assembly; 41-Right angle plate; 42-Nut seat; 43-Second bolt;

[0036] 5-First fastener; 51-First bolt; 52-Nut;

[0037] 6-Second adjusting and fastening assembly; 7-Third adjusting and fastening assembly. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0041] Please see Figure 1-4 As shown, one embodiment of this utility model provides a rubber elastic adjustment seat for a sweeper, the rubber elastic adjustment seat for a sweeper includes a bracket 1, a rubber tensioning assembly 2 and a torque converter assembly 3, wherein:

[0042] The bracket 1 serves as the fixed reference for the entire adjusting seat and is installed on the belt conveyor frame. The rubber tensioning assembly 2 includes an outer fixing sleeve 21, an inner fixing sleeve 22, a rubber torsion strip 23, and a sealing cover 24. The outer fixing sleeve 21 is adjustablely installed on the bracket 1 via bolts, elongated holes, or sliding grooves, and its position can be finely adjusted along the length of the bracket 1. The inner fixing sleeve 22 is fitted inside the outer fixing sleeve 21, forming an annular gap between them. The rubber torsion strip 23 is positioned in the gap between the outer fixing sleeve 21 and the inner fixing sleeve 22, so that the rubber torsion strip 23 is pressed into the gap and produces an interference fit, forming an "elastic bearing" structure based on the rebound force after deformation. The sealing cover 24 seals both ends of the outer fixing sleeve 21, which can prevent dust and moisture from entering the gap, affecting the operation of the rubber torsion strip 23, avoiding rubber aging, and also preventing the rubber torsion strip 23 from running out of the gap during long-term friction. One end of the fixing sleeve 22 extends to the outside of the outer fixing sleeve 21. The rubber torsion strip 23 is interference-fitted with the clearance. The inner fixing sleeve 22 extending to the outside is used to connect with the torque generator assembly 3 to realize torque transmission. The torque generator assembly 3 includes a connecting end plate 31 and a sleeve 32. One side of the connecting end plate 31 is sleeved on the end of the inner fixing sleeve 22 away from the outer fixing sleeve 21. The sleeve 32 is integrally connected to the other side of the connecting end plate 31. The sleeve 32 is located on the side close to the inner fixing sleeve 22, and the sleeve 32 is parallel to the central axis of the inner fixing sleeve 22.

[0043] Specifically, in this embodiment, the cleaning scraper generates resistance on the belt surface and transmits the resistance to the sleeve 32, causing the sleeve 32 to be subjected to torque. This torque is then transmitted sequentially to the connecting end plate 31, the inner fixing sleeve 22, and the rubber torsion strip 23. The rubber torsion strip 23 undergoes shear / torsional elastic deformation, and the rubber generates a rebound torque, which reacts to the cleaning scraper, ensuring that the cleaning scraper always stays close to the belt.

[0044] When there are undulations on the belt surface or changes in the thickness of the adhesive, the resistance fluctuations will cause the rubber torsion strip 23 to adjust the torque in real time through elastic deformation, thus avoiding rigid impact.

[0045] If overall adjustment of preload is required: loosen the connecting bolts between bracket 1 and outer fixing sleeve 21, change the initial installation angle or height of outer fixing sleeve 21, and the initial torsion angle of rubber torsion strip 23 can be changed to achieve "stepless" elasticity adjustment.

[0046] Therefore, the shear deformation of the rubber torsion strip 23 can respond instantaneously to changes in resistance, achieving "elastic floating" and avoiding uneven pressure caused by resonance or fatigue in traditional helical springs; the sealing cover 24 and the interference fit form a labyrinth + compression double seal, preventing dust from entering the gap and making the rubber less prone to aging; at the same time, the rubber torsion strip 23 is in a closed cavity, free from ultraviolet and ozone corrosion, and its lifespan is 2-3 times longer than that of exposed elastic torsion strips.

[0047] Specifically, please refer to Figure 1 , Figure 2 , Figure 3 As shown, in some embodiments, the bracket 1 includes an integrally vertically connected support base 11 and a side connecting frame 12, with the side connecting frame 12 located at the bottom end of the support base 11; the support base 11 has a strip hole 111 extending along the length direction, and the bottom of the outer fixing sleeve 21 is fixedly connected to a base plate 211, which is adjustablely mounted on the support base 11 through the strip hole 111.

[0048] Specifically, in this embodiment, the bracket 1 is composed of a support base 11 and a side connecting frame 12, which are vertically connected in an "L" shape; the support base 11 is used to support the overall adjustment seat; the side connecting frame 12 is used to assist in installation.

[0049] When the base plate 211 of the outer fixing sleeve 21 is placed on the support base 11, the bolt is passed through the strip hole 111 and then locked by the pre-tightening nut, but not completely locked; push and pull the outer fixing sleeve 21 along the direction of the strip hole 111 (i.e. the length direction of the support base 11) to change its installation position, thereby changing the horizontal distance or angle between the cleaning scraper and the center line of the belt; tighten the nut after the position is determined to complete the positioning.

[0050] Therefore, by replacing the traditional perforated plate with the strip hole 111 and the base plate 211, continuous adjustment can be made within a certain range to compensate for the offset of the cleaning area caused by belt misalignment; for belt conveyors with different bandwidths or different roller center distances, no additional drilling is required, thus improving versatility.

[0051] Specifically, please refer to Figure 4 As shown, in some embodiments, the base plate 211 has first locking holes 2111 on both sides of the outer fixing sleeve 21, corresponding to the positions of the strip hole 111. The first locking holes 2111 and the strip hole 111 are connected by first fasteners 5 to fix the outer fixing sleeve 21 on the support base frame 11.

[0052] During assembly, first place the outer fixing sleeve 21 on the support base 11, and the first fastener 5 passes through the strip hole 111 and the first locking hole 2111. The first fastener 5 is pre-tightened (not locked), and then the outer fixing sleeve 21 is slid horizontally along the direction of the strip hole 111 to the desired position. Finally, the first fastener 5 is tightened to complete the positioning and clamping.

[0053] Specifically, please refer to Figure 3 , 4 As shown, in some embodiments, the first fastener 5 is a first bolt 51 passing through the first locking hole 2111 and the strip hole 111, and a nut 52 threadedly connected to the first bolt 51.

[0054] Specifically, please refer to Figure 1 , 2 As shown, in some other embodiments, the rubber elastic adjustment seat for the cleaner also includes a first adjusting fastening component 4 for adjusting the displacement of the rubber tensioning component 2, the first adjusting fastening component 4 being adapted to adjust the position of the rubber tensioning component 2 on the support base 11 when the first fastener 5 is loosened.

[0055] When the first bolt 51 is loosened, the friction lock between the base plate 211 and the support base frame 11 is released, and the base plate 211 can slide freely along the direction of the strip hole 111.

[0056] Specifically, please refer to Figure 2 As shown, the first adjusting and fastening assembly 4 includes a right-angle plate 41, two nut seats 42, and a second bolt 43, wherein:

[0057] The bottom of the right-angle plate 41 is fixedly connected to the upper surface of the support base 11; two nut seats 42 are symmetrically connected to the two sides of the top of the right-angle plate 41 and form coaxial threaded holes to ensure that the axis of the second bolt 43 is consistent with the direction of the strip hole 111; the second bolt 43 is threaded through the two nut seats 42 and the right-angle plate 41, and the second bolt 43 is adapted to be vertically pressed against the outer surface of the outer fixing sleeve 21.

[0058] Specifically, please refer to Figure 2 As shown, the rubber elastic adjustment seat for the sweeper also includes several second adjustment and fastening components 6 and several third adjustment and fastening components 7, wherein:

[0059] Several second adjusting fastening components 6 are evenly distributed on the outer peripheral wall of the inner fixed sleeve 22 located between the connecting end plate 31 and the outer fixed sleeve 21; a torsion bar is suitable to be inserted into the inner fixed sleeve 22, and the second adjusting fastening components 6 are suitable to press against the torsion bar to fix the torsion bar and the inner fixed sleeve 22.

[0060] Several third adjusting fastening components 7 are inserted into the top and side walls of the sleeve 32. The sleeve 32 is adapted to have a base tube inserted inside. The third adjusting fastening components 7 are adapted to press vertically against the outer circumference of the base tube.

[0061] Specifically, the torsion bar is inserted into the inner fixing sleeve 22, and then each of the second adjusting fastening components 6 is tightened so that the end of the screw radially presses against the outer circumference of the torsion bar, forming multi-point clamping; the preload at each point is adjustable, which ensures coaxiality and prevents axial movement.

[0062] Insert the base tube into the sleeve 32, and then tighten each of the third adjusting fastening components 7 so that the end of the screw presses vertically against the outer circumference of the base tube to achieve quick centering, positioning and clamping; loosening allows the base tube to slide or rotate axially, making it easy to replace the scraper.

[0063] The second adjusting fastening component 6 has a multi-point adjustable clamping mechanism, which eliminates the gap of the traditional keyway fit, so that the torsion bar and the inner fixed sleeve 22 form a "backlash-free" connection, and the cleaning torque response is lag-free and the fit is more uniform; the third adjusting fastening component 7 has a three-point self-centering structure that ensures that the coaxiality of the base tube and the sleeve 32 is ≤ 0.05 mm, and the radial runout is reduced by 50% during operation, reducing the vibration of the cleaning blade edge and belt wear.

[0064] Specifically, please refer to Figure 2 As shown, the cross-section of the rubber torsion strip 23 is cylindrical. The outer diameter D of the rubber torsion strip 23 is slightly larger than the annular gap between the outer fixing sleeve 21 and the inner fixing sleeve 22, forming an interference fit; the cylindrical cross-section has no sharp edges, and when compressed during assembly, it can generate uniform radial compressive stress in the 360° circumference, achieving "full circumference" sealing and positioning.

[0065] Specifically, please refer to Figure 1 As shown, mounting holes 121 are provided on both sides of the side connecting frame 12. The side connecting frame 12 is fixedly connected to the external platform through the mounting holes 121 and screws passing through the mounting holes 121.

[0066] Specifically, please refer to Figure 2As shown, both the second adjusting fastening assembly 6 and the third adjusting fastening assembly 7 are provided in pairs.

[0067] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A rubber elastic force adjusting seat for a sweeper, characterized by, include: Support (1); The rubber tensioning assembly (2) includes an outer fixing sleeve (21) adjustablely mounted on the bracket (1), an inner fixing sleeve (22) fitted inside the outer fixing sleeve (21), a rubber torsion strip (23) disposed in the gap between the outer fixing sleeve (21) and the inner fixing sleeve (22), and a sealing cap (24) sealing both ends of the outer fixing sleeve (21). One end of the inner fixing sleeve (22) extends to the outside of the outer fixing sleeve (21), and the rubber torsion strip (23) is interference-fitted with the gap. The torque generator assembly (3) includes a connecting end plate (31) on one side sleeved on the inner fixed sleeve (22) away from the outer fixed sleeve (21) and a sleeve (32) integrally connected through the other side of the connecting end plate (31). The sleeve (32) is located on the side close to the inner fixed sleeve (22) and the sleeve (32) is parallel to the central axis of the inner fixed sleeve (22).

2. The rubber elastic force adjusting seat for a sweeper according to claim 1, wherein The bracket (1) includes an integrally vertically connected support base (11) and a side connecting frame (12). The side connecting frame (12) is located at the bottom end of the support base (11). The support base (11) has a strip hole (111) extending along the length direction. The bottom of the outer fixing sleeve (21) is fixedly connected to a base plate (211). The base plate (211) can be adjusted and installed on the support base (11) through the strip hole (111).

3. The rubber elastic force adjusting seat for a sweeper according to claim 2, wherein The base plate (211) is provided with first locking holes (2111) on both sides of the outer fixing sleeve (21) corresponding to the position of the strip hole (111). The first locking holes (2111) and the strip hole (111) are connected by first fasteners (5) to fix the outer fixing sleeve (21) on the support base frame (11).

4. The rubber elastic force adjusting seat for a sweeper according to claim 3, wherein The first fastener (5) is a first bolt (51) passing through the first locking hole (2111) and the strip hole (111) and a nut (52) threaded onto the first bolt (51).

5. The rubber elastic adjustment seat for the sweeper as described in claim 3, characterized in that, It also includes a first adjusting fastening assembly (4) for adjusting the displacement of the rubber tensioning assembly (2), the first adjusting fastening assembly (4) being adapted to adjust the position of the rubber tensioning assembly (2) on the support base (11) when the first fastener (5) is loosened.

6. The rubber elastic force adjusting seat for a sweeper according to claim 5, wherein The first adjusting fastening assembly (4) includes: A right-angle plate (41) is fixedly connected at its bottom to the upper surface of the support base (11); Two nut seats (42) are symmetrically connected to the top of the right angle plate (41) on both sides; The second bolt (43) is threaded through the two said nut seats (42) and the right angle plate (41), and the second bolt (43) is adapted to press vertically against the outer surface of the outer fixing sleeve (21).

7. The rubber elastic adjusting seat for sweeper as claimed in any one of claims 1-6, wherein, Also includes: A plurality of second adjusting fastening components (6) are evenly distributed on the outer peripheral wall of the inner fixing sleeve (22) located between the connecting end plate (31) and the outer fixing sleeve (21); a torsion bar is adapted to be inserted into the inner fixing sleeve (22), and the second adjusting fastening components (6) are adapted to press against the torsion bar to fix the torsion bar and the inner fixing sleeve (22). Several third adjusting fastening components (7) are installed on the top and side walls of the sleeve (32), and the base tube is adapted to be inserted inside the sleeve (32). The third adjusting fastening components (7) are adapted to be vertically pressed against the outer circumference of the base tube.

8. The rubber elastic force adjusting seat for a sweeper according to claim 4, wherein The cross-section of the rubber torsion strip (23) is cylindrical.

9. The rubber elastic force adjusting seat for a sweeper according to claim 6, wherein The side connecting frame (12) has mounting holes (121) on both sides. The side connecting frame (12) is fixedly connected to the external platform through the mounting holes (121) and screws passing through the mounting holes (121).

10. The rubber elastic adjusting seat for sweeper according to claim 7, wherein, Both the second adjusting fastening assembly (6) and the third adjusting fastening assembly (7) are provided in pairs.

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