Belt tension degree adjusting mechanism

Abstract

The utility model belongs to the technical field of tobacco equipment, and discloses a belt tension degree adjusting mechanism. The device comprises a first mounting seat, a second mounting seat and an adjusting screw rod assembly. The first mounting seat is arranged on the mounting plate, and a mounting hole is formed in the first mounting seat; an adjusting threaded hole is formed in the second mounting seat, the axis directions of the mounting hole and the adjusting threaded hole are in the same straight line and are parallel to the first direction, and the mounting hole and the adjusting threaded hole are spaced from the rack in the second direction; the adjusting screw assembly comprises an adjusting screw and an abutting part, the adjusting screw is rotationally connected with the mounting hole and is in threaded connection with the adjusting threaded hole, and the abutting part can abut against the two sides, in the first direction, of the first mounting base for limiting. According to the mechanism, an operator does not need to respectively screw a plurality of nuts at different positions to fix or unfix the adjusting screw rod, and a certain operation space is reserved between the adjusting screw rod and the rack, so that the operator can conveniently rotate the adjusting screw rod, and the efficiency of adjusting the tension degree of the belt is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tobacco equipment technical field especially relates to a belt tension degree adjusting mechanism. BACKGROUND

[0002] The foreign matter removing equipment is one of the important equipment in the domestic and foreign tobacco industry silk production. The foreign matter removing equipment throws out the material through the high speed operation of the belt, and the cut tobacco and the non-tobacco sundries in the material are separated from each other when being thrown out due to different quality. Because the belt runs fast, the belt transmission part needs to be maintained regularly to avoid the influence of transmission effect due to wear of the transmission part. The belt needs to be loosened before maintenance and then be tightened after maintenance.

[0003] In the prior art, when adjusting the belt tension degree of the foreign matter removing equipment, due to the limitation of the rack structure, the operator needs to manually adjust each nut on the adjusting screw rod and then rotate the adjusting screw rod, which is slow and seriously restricts the maintenance efficiency of the equipment. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a belt tension degree adjusting mechanism to improve the efficiency when adjusting the belt tension degree.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A belt tension degree adjusting mechanism, comprising:

[0007] A first mounting seat is arranged on the mounting plate, and a mounting hole is arranged on the first mounting seat;

[0008] A second mounting seat is arranged on the rack along a first direction, and an adjusting threaded hole is arranged in the second mounting seat; the axis direction of the mounting hole and the adjusting threaded hole is along the same line and parallel to the first direction, and the mounting hole and the adjusting threaded hole are arranged on the rack along a second direction.

[0009] An adjusting screw rod assembly comprises an adjusting screw rod and an abutting part arranged on the adjusting screw rod; the adjusting screw rod is rotationally connected with the mounting hole and is threadedly connected with the adjusting threaded hole; and the abutting part can abut against and limit the two sides of the first mounting seat along the first direction.

[0010] Preferably, the adjusting screw rod is provided with two thrust bearings, and the two thrust bearings can abut against and limit the two sides of the first mounting seat along the first direction.

[0011] Preferably, the mounting hole is a three-section stepped hole, and the hole diameter of the two end hole sections is larger than the hole diameter of the middle hole section.

[0012] Preferably, the adjusting screw is provided with a stop washer, and the stop washer is arranged on the side of the thrust bearing away from the first mounting seat and used for abutting and limiting the thrust bearing.

[0013] Preferably, the adjusting screw is provided with a mounting groove, and the mounting groove is used for mounting the stop washer.

[0014] Preferably, the second mounting seat is provided with an adjusting nut, and the adjusting threaded hole is located in the adjusting nut.

[0015] Preferably, the adjusting nut is a square nut, the second mounting seat is provided with a square groove, and the square nut is arranged in the square groove.

[0016] Preferably, the second mounting seat is further provided with a fixing cover, the fixing cover is arranged at the opening of the square groove and used for abutting and limiting the two sides of the adjusting nut along the first direction, and the fixing cover is provided with an avoiding groove used for avoiding the adjusting screw.

[0017] Preferably, the end of the adjusting screw is welded with a fixing nut.

[0018] Preferably, the fixing nut is provided with a sleeve wrench.

[0019] Beneficial effects:

[0020] The belt tension adjustment mechanism provided by the utility model comprises a first mounting seat, a second mounting seat and an adjusting screw assembly. The first mounting seat is arranged on a mounting plate, and the first mounting seat is provided with a mounting hole. The second mounting seat is arranged on a rack along a first direction at intervals with the first mounting seat, and the second mounting seat is provided with an adjusting threaded hole. The axial directions of the mounting hole and the adjusting threaded hole are along the same line and parallel to the first direction, and the mounting hole and the adjusting threaded hole are arranged at intervals with the rack along a second direction. The adjusting screw assembly comprises an adjusting screw and an abutting portion arranged on the adjusting screw. The adjusting screw is rotationally connected with the mounting hole and is threadedly connected with the adjusting threaded hole. The abutting portion can abut and limit the two sides of the first mounting seat along the first direction. The belt tension adjustment mechanism makes the operator not need to respectively screw a plurality of nuts at different positions to fix or release the adjusting screw. The arrangement of the first mounting seat and the second mounting seat makes the adjusting screw leave a certain operation space with the rack, which is convenient for the operator to rotate the adjusting screw and improves the efficiency when adjusting the belt tension. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the belt tension adjustment mechanism provided by the utility model.

[0022] Figure 2 is the schematic diagram of the foreign matter removing equipment when the belt tension degree adjusting mechanism is not installed, provided by the utility model;

[0023] Figure 3 is the structure explosion drawing of the belt tension degree adjusting mechanism, provided by the utility model.

[0024] In the drawing:

[0025] 1, rack; 2, screw rod fixed seat; 3, adjusting screw rod; 4, adjusting nut; 5, screw rod fixed nut; 6, screw rod movable seat; 7, mounting plate; 8, rotating roller bearing; 9, rotating roller; 10, adjusting screw rod assembly; 101, elastic check ring; 102, thrust ball bearing; 103, adjusting screw rod; 11, second mounting seat; 111, fixed cover; 112, bolt nut; 113, square nut; 114, seat body; 12, first mounting seat. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawing, not all the structures.

[0027] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] In the description of the present embodiment, the terms "upper", "lower", "right", and the like, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0030] As shown in Figure 1 and Figure 3 In the present embodiment, the first direction is shown as the X direction, and the second direction is shown as the Y direction. The first direction is the direction in which the mounting plate 7 slides, and the second direction is the axis direction of the rotating roller 9. Moving the mounting plate 7 along the first direction can change the tension of the belt.

[0031] The present embodiment provides a belt tension adjusting mechanism for adjusting the tension of the belt in a foreign matter removing device. The belt is wound around the rotating roller 9, and the rotating roller 9 is slidably connected to the rack 1 through the mounting plate 7. The belt tension adjusting mechanism includes a first mounting seat 12, a second mounting seat 11, and an adjusting screw assembly. The first mounting seat 12 is provided on the mounting plate 7, and the first mounting seat 12 is provided with a mounting hole. The second mounting seat 11 is provided on the rack 1 and spaced apart from the first mounting seat 12 along the first direction. The second mounting seat 11 is provided with an adjusting threaded hole. The axes of the mounting hole and the adjusting threaded hole are along the same line and parallel to the first direction. The mounting hole and the threaded hole are spaced apart from the rack 1 along the second direction. The adjusting screw 103 is rotatably connected to the mounting hole and threadedly connected to the adjusting threaded hole. The adjusting screw 103 is provided with an abutting portion, which can abut and limit the first mounting seat 12 on both sides along the first direction.

[0032] As shown in Figure 2 The existing foreign matter removing device includes a rack 1, a screw fixed seat 2, an adjusting screw 3, an adjusting nut 4, a screw fixed nut 5, a screw movable seat 6, a mounting plate 7, a rotating roller bearing 8, a rotating roller 9, and the like. When adjusting the belt tension, the operator needs to rotate different nuts and move the adjusting screw 3 along the first direction to adjust the belt tension. At the same time, the adjusting screw 3 itself is close to the rack 1. When the operator manually adjusts using an open wrench, there is a lack of operating space, and each time the nut is rotated, it can only be rotated by a small angle, and the adjustment efficiency is low.

[0033] It can be understood that in the embodiment, the first mounting seat 12 is fixed relative to the mounting plate 7, the second mounting seat 11 is fixed relative to the rack 1, and the adjusting screw 103 is installed through the mounting hole in the first mounting seat 12 and the adjusting threaded hole in the second mounting seat 11. When the adjusting screw 103 is rotated, the whole adjusting screw 103 moves in the first direction, and the abutting effect of the abutting portion drives the first mounting seat 12 to move in the first direction, and then the mounting plate 7 moves in the first direction to change the tension of the belt. That is, the operator does not need to respectively screw a plurality of nuts in different positions to fix or release the adjusting screw 103, and the first mounting seat 12 and the second mounting seat 11 are arranged to leave a certain operation space between the adjusting screw 103 and the rack 1, which facilitates the operator to rotate the adjusting screw 103, and improves the efficiency when adjusting the belt tension.

[0034] Further, the first mounting seat 12 is provided with two protrusions, each of which has a through hole, and a threaded part is used to fix the second mounting seat 11 on the screw movable seat 6; the second mounting seat 11 has a plurality of through holes, and a bolt nut 112 is used to fix the second mounting seat 11 on the screw fixed seat 2. That is, the belt tension adjusting mechanism provided in the embodiment can be based on the existing foreign matter removing equipment, and only the first mounting seat 12, the second mounting seat 11 and the adjusting screw assembly 10 need to be installed on the basis of the original to realize the rapid adjustment of the belt tension.

[0035] Specifically, in the embodiment, the adjusting screw 103 is provided with two thrust bearings, which can abut and limit the first mounting seat 12 on both sides in the first direction, respectively. When the adjusting screw 103 is rotated, the abutting portion will also rotate with the rotation of the adjusting screw 103, that is, the abutting portion and the first mounting seat 12 will also relatively rotate. The abutting portion is arranged as a thrust bearing, and the two thrust bearings can abut and limit the first mounting seat 12 on both sides in the first direction, respectively, which can reduce the friction force generated between the abutting portion and the first mounting seat 12 when the adjusting screw 103 is rotated, and facilitate the rotation of the adjusting screw 103. Further, the thrust bearing is a thrust ball bearing 102, which includes a shaft ring, a steel ball, a steel ball retainer and a seat ring. The shaft ring and the steel ball retainer are fixed relative to the adjusting screw 103, and the seat ring abuts against the first mounting seat 12. When the adjusting screw 103 is rotated, the seat ring is fixed relative to the first mounting seat 12, the shaft ring and the steel ball retainer rotate together with the adjusting screw 103, and the steel ball in the thrust ball bearing 102 is relied on to roll to reduce the friction. In some other embodiments, the thrust bearing can also be a thrust roller bearing.

[0036] Specifically, in the embodiment, the mounting hole is a three-section stepped hole, the hole diameter of the two end hole sections is larger than that of the middle hole section. The adjusting screw 103 passes through the middle hole section, the hole diameter of the middle hole section is slightly larger than that of the adjusting screw 103, so that the adjusting screw 103 can rotate in the middle hole section, and the middle hole section can limit the adjusting screw 103 in the radial direction, avoiding radial vibration of the adjusting screw 103 when rotating. The seat ring of the thrust ball bearing 102 located on both sides of the first mounting seat 12 is arranged in the two end hole sections respectively, and the two end hole sections limit the thrust ball bearing 102 in the radial direction, avoiding radial vibration of the thrust ball bearing 102 when rotating with the adjusting screw 103.

[0037] Further, in the embodiment, the adjusting screw 103 is sleeved with a check ring, which is arranged on the side of the thrust bearing away from the first mounting seat 12 for abutting and limiting the thrust bearing. When the adjusting screw 103 rotates, the thrust ball bearing 102 moves in the first direction, at this time, the thrust ball bearing 102 drives the first mounting seat 12 to move and bears the axial load. At the same time, the thrust ball bearing 102 driving the first mounting seat 12 to move bears the reaction force in the direction opposite to the movement direction. The adjusting screw 103 is sleeved with the check ring, and the check ring abuts and limits the thrust ball bearing 102, which can avoid the thrust ball bearing 102 from axially sliding with the adjusting screw 103 under the effect of the reaction force, affecting the driving effect of the adjusting screw 103 on the first mounting seat 12. Further, the check ring is a ring-shaped elastic check ring 101, which can more fully contact the thrust ball bearing 102 and provide the limiting effect.

[0038] Further, in the embodiment, the adjusting screw 103 is provided with a mounting groove, and the mounting groove is used for mounting the check ring. The adjusting screw 103 is provided with a ring-shaped mounting groove, and the ring-shaped elastic check ring 101 is mounted in the ring-shaped mounting groove. The ring-shaped mounting groove can play a positioning effect, facilitate the determination of the mounting position of the ring-shaped elastic check ring 101, and also facilitate the quick and convenient disassembly of the ring-shaped elastic check ring 101. In some other embodiments, the ring-shaped elastic check ring 101 can also be fixed on the adjusting screw 103 by welding, threaded connection and the like, which is not limited in the embodiment.

[0039] Specifically, in the embodiment, the second mounting seat 11 is provided with an adjusting nut, and the adjusting threaded hole is located in the adjusting nut. It can be understood that if the adjusting threaded hole is directly punched and threaded on the second mounting seat 11, it is necessary to ensure that the punching precision on the second mounting seat 11 is very high, otherwise the center of the adjusting threaded hole on the second mounting seat 11 and the center of the mounting hole on the first mounting seat 12 are not on the same straight line, and the assembly is difficult; and when the thread in the adjusting threaded hole is damaged, the second mounting seat 11 needs to be replaced as a whole. By providing the adjusting nut on the second mounting seat 11, the position of the adjusting nut can be fine-tuned as needed to ensure that the center of the adjusting threaded hole and the center of the mounting hole on the first mounting seat 12 are on the same straight line, facilitating the assembly of the adjusting screw 103; and when the thread in the adjusting threaded hole is damaged, only the adjusting nut needs to be replaced, without replacing the second mounting seat 11.

[0040] Specifically, in the embodiment, the adjusting nut is a square nut 113, and the second mounting seat 11 is provided with a square groove, and the square nut 113 is arranged in the square groove. The second mounting seat 11 includes a seat body 114, and the square groove is opened on the seat body 114. The straight side of the square nut 113 is in abutting fit with the straight side of the square groove. When the adjusting screw 103 rotates, the square groove can fix the circumference of the square nut 113, and the square nut 113 cannot rotate with the adjusting screw 103, so as to make the adjusting screw 103 produce displacement along the first direction. Further, the square nut 113 is a copper nut, and the surface is relatively smooth and has a low friction coefficient, facilitating the rotation of the adjusting screw 103. In some other embodiments, the adjusting nut can also have other shapes, as long as it can be clamped with the groove in the second mounting seat 11 to realize circumferential positioning, and the embodiment does not limit this.

[0041] Specifically, in the embodiment, the second mounting seat 11 is further provided with a fixing cover 111, which is arranged at the opening of the square groove and used to abut and limit the square nut along two sides in the first direction. The fixing cover 111 is provided with an avoiding groove for avoiding the adjusting screw 103. The square groove is arranged on the side of the seat body 114 and penetrates through in the first direction. The fixing cover 111 is arranged and fixed at the opening of the square groove and can abut the two sides of the square nut 113 respectively. When the adjusting screw 103 rotates, the fixing cover 111 can limit the square nut 113, so as to avoid the sliding of the square nut 113 along the axial direction of the adjusting screw 103, thereby ensuring the relative fixation of the square nut 113 and the second mounting seat 11. That is, the adjusting screw hole in the second mounting seat 11 is relatively fixed with the second mounting seat 11, thereby ensuring the movement ability of the adjusting screw 103 in the first direction. Meanwhile, the avoiding groove on the fixing cover 111 facilitates the avoidance of the adjusting screw 103, so that the adjusting screw 103 can pass through the second mounting seat 11 and move in the first direction. Further, the fixing cover 111 is fixed on the second mounting seat 11 by the plurality of bolts and nuts 112, so as to ensure the abutting and limiting effect of the fixing cover 111 on the adjusting nut.

[0042] Specifically, in the embodiment, the end of the adjusting screw 103 is welded with a fixing nut. When the operator rotates the adjusting screw 103, the fixing nut is directly rotated, so that the adjusting screw 103 is rotated. This avoids the damage of the screw thread of the screw when the operator directly screws the screw, and affects the structural function of the screw itself. Meanwhile, the length of the adjusting screw 103 can be appropriately lengthened, so that the end of the adjusting screw 103 is away from the rack 1, which is more convenient for the operator to directly operate the adjusting screw 103 and avoids the space interference.

[0043] Specifically, in the embodiment, the fixing nut is sleeved with a socket wrench. The operator does not need to prepare a wrench additionally, but only needs to rotate the socket wrench, so that the adjusting screw 103 is rotated and the tension of the belt is adjusted. Further, an electric or pneumatic rotating driving mechanism can be arranged at the end of the adjusting screw 103, which avoids manual operation and has a faster adjustment speed.

[0044] Further, in some other embodiments, the fixing nut can not be arranged, but a hand crank is directly fixed at the end of the adjusting screw 103 by welding or threaded connection, so that the operator directly rotates the hand crank, so that the adjusting screw 103 is rotated.

[0045] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A belt tension adjusting mechanism for adjusting the tension of a belt in a foreign matter removing apparatus frame (1), said belt being wound around a rotating roller (9) which is slidably connected to said frame (1) by a mounting plate (7), characterized in that, The utility model relates to a kind of rack adjusting device, including: First mounting seat (12), the first mounting seat (12) is arranged on the mounting plate (7), and mounting hole is arranged on the first mounting seat (12); Second mounting seat (11), the second mounting seat (11) is spaced apart from the first mounting seat (12) along the first direction and is arranged on the rack (1), and adjusting screw hole is arranged in the second mounting seat (11), the axis direction of the mounting hole and the adjusting screw hole is along the same straight line and parallel to the first direction, and the mounting hole and the screw hole are spaced apart from the rack (1) along the second direction; Adjusting screw rod assembly (10), the adjusting screw rod assembly (10) includes adjusting screw rod (103) and abutting portion arranged on the adjusting screw rod (103), the adjusting screw rod (103) is rotatably connected with the mounting hole, and is threadedly connected with the adjusting screw hole, and the abutting portion can be respectively limited with the first mounting seat (12) along the two sides of the first direction.

2. The belt tension adjuster according to claim 1, wherein The adjusting screw rod (103) is provided with two thrust bearings, and the two thrust bearings can be respectively limited with the first mounting seat (12) along the two sides of the first direction.

3. The belt tension adjuster according to claim 2, wherein The mounting hole is a three-section stepped hole, and the hole diameter of the two end hole sections is greater than the hole diameter of the middle hole section.

4. The belt tension adjuster according to claim 2, wherein The adjusting screw rod (103) is provided with a check ring, and the check ring is arranged on the side of the thrust bearing away from the first mounting seat (12) for abutting limiting with the thrust bearing.

5. The belt tension adjuster according to claim 4, wherein The adjusting screw rod (103) is provided with a mounting groove, and the mounting groove is used for mounting the check ring.

6. The belt tension adjuster according to claim 1, wherein The second mounting seat (11) is provided with an adjusting nut, and the adjusting screw hole is located in the adjusting nut.

7. The belt tension adjuster according to claim 6, wherein The adjusting nut is a square nut (113), and the second mounting seat (11) is provided with a square groove, and the square nut (113) is arranged in the square groove.

8. The belt tension adjuster according to claim 7, wherein The second mounting seat (11) is further provided with a fixing cover (111), and the fixing cover (111) is arranged in the slot opening of the square groove for abutting limiting with the square nut (113) along the two sides of the first direction, and the fixing cover (111) is provided with a avoiding slot for avoiding the adjusting screw rod (103).

9. The belt tension adjuster according to claim 1, wherein The end of the adjusting screw rod (103) is welded with a fixing nut.

10. The belt tension adjuster according to claim 9, wherein The fixing nut is provided with a sleeve wrench.

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