Coupling for belt conveyor and belt conveyor

Abstract

The utility model relates to the technical field of couplings, in particular to a coupler for a belt conveyor and the belt conveyor, the coupler is used for achieving connection of a main shaft of a motor and a roll shaft of the belt conveyor, the coupler comprises two connectors and a plurality of connecting arms, one of the two connectors is used for being detachably installed on the main shaft of the motor, and the other connector is used for being detachably installed on the roll shaft of the belt conveyor. The other one is used for being detachably mounted on a roller shaft of the belt conveyor; in an assembly state, the two connectors are oppositely arranged at intervals in the axial direction; the connecting arm is detachably connected between the two connecting heads so that the two connecting heads can be kept relatively fixed, the dismounting direction of the connecting arm is the radial direction of the connecting heads, and the axial spacing distance between the two connecting heads is larger than the axial length of the connecting heads; when the coupler needs to be dismantled, the motor and the roll shaft do not need to be moved axially, and in other words, the coupler can be dismantled under the condition that the motor and the roll shaft are not moved axially.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a coupling for a belt conveyor and the belt conveyor. Background Art

[0002] A belt conveyor, also known as a belt conveyor, conveyor belt, conveyor belt, etc., is mainly used to transport materials. It mainly includes at least two rollers and a conveyor belt mounted on the rollers. When working, the motor drives the rollers to rotate, which in turn drives the conveyor belt to rotate, thereby driving the material placed on the transmission belt to move forward and realize material transportation.

[0003] Among them, in some belt conveyors, the motor and the roller shaft are connected by a coupling to achieve power transmission.

[0004] A coupling is a mechanical part used to connect two shafts (driving shaft and driven shaft) in different mechanisms so that they rotate together to transmit torque. It generally includes two connectors, one of which is connected to the driving shaft (such as the main shaft of a motor) and the other is connected to the driven shaft (such as the roller shaft of a belt conveyor). The two connectors are then fixed together by bolts, so that the driving shaft and the driven shaft are coaxially connected. For this type of coupling, please refer to a high-power coupling disclosed in the utility model with announcement number CN220791827U.

[0005] However, this type of coupling still has some shortcomings when applied to belt conveyors. The main shortcomings are as follows: in the assembled state, the two connecting heads of the coupling are axially inserted into the main shaft of the motor and the roller shaft of the belt conveyor respectively. The motor is generally fixed to the motor seat by bolts. Therefore, the main shaft of the motor cannot move in the axial direction. At the same time, the roller shaft is also fixed in the axial direction, that is, it cannot move axially. Therefore, when the coupling needs to be disassembled, even if the bolts connecting the two connecting heads are unscrewed, the connecting heads cannot be directly pulled out from the main shaft and the roller shaft in the axial direction. The motor or the roller shaft must be moved so that one of the roller shaft and the main shaft of the motor moves axially. Only then can the coupling be pulled out axially. Therefore, there is still room for improvement. Utility Model Content

[0006] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the present utility model is to provide a coupling for a belt conveyor and a belt conveyor.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A coupling for a belt conveyor is used to connect the main shaft of a motor and the roller shaft of the belt conveyor. The coupling includes two connecting heads and a plurality of connecting arms. One of the two connecting heads is used to be detachably mounted on the main shaft of the motor, and the other is used to be detachably mounted on the roller shaft of the belt conveyor. In the assembled state, the two connecting heads are arranged with relative spacing along the axial direction. The connecting arm is detachably connected between the two connecting heads to keep the two connecting heads relatively fixed, wherein the disassembly direction of the connecting arm is the radial direction of the connecting head, and the axial spacing distance between the two connecting heads is greater than the axial length of the connecting head.

[0009] As an optional implementation of the utility model, the connecting arm is inserted into the connecting head along the radial direction of the connecting head, and a limiting assembly is provided between the connecting arm and the connecting head, and the limiting assembly is used to limit the radial movement of the connecting arm relative to the connecting head.

[0010] As an optional embodiment of the utility model, insertion portions are formed at both ends of the connecting arm, and a slot extending radially along the connecting head and for radial insertion of the insertion portion is provided on the inner side wall of the connecting head, and the outer end of the slot passes through the peripheral wall of the connecting head; in the radial direction, the insertion portion is restricted between the limit assembly and the end wall of the slot.

[0011] As an optional embodiment of the utility model, the limit assembly includes an insert block and a first bolt corresponding to the connecting arm one by one, the insert block is movably arranged on the connecting head along the axial direction of the connecting head, and the insert block at least partially extends into the slot and is located on the outside of the insertion part, the first bolt is threadedly connected to the insert block, and the inner end of the first bolt abuts against the insertion part.

[0012] As an optional implementation of the present invention, the connector is provided with a through hole axially penetrating the connector at the slot position, and the insert block is movably inserted in the through hole.

[0013] As an optional implementation of the utility model, the limit assembly also includes a connecting ring, a concave step is formed on the outer side of the outer peripheral wall of the connecting head, and the connecting ring is axially movably inserted into the concave step; all the plug blocks are fixed on the connecting ring.

[0014] As an optional implementation of the present invention, the connecting arm is provided with reinforcing ribs on the inner side of the insertion portion.

[0015] As an optional implementation of the present invention, all the slots are distributed in an array along the circumference of the connector.

[0016] As an optional embodiment of the utility model, an axial hole is opened at the outer center of the connecting head, and the axial hole is a blind hole. One or more key grooves are opened on the peripheral wall of the axial hole. The coupling also includes a second bolt, which is threadedly connected to the connecting head and radially penetrates into the axial hole.

[0017] The utility model also provides a belt conveyor, comprising at least two roller shafts arranged in parallel, a transmission belt sleeved on the roller shafts, and a motor; one of the roller shafts constitutes an active roller, and the main shaft of the motor and the active roller are connected by a coupling, and the coupling adopts the above-mentioned coupling for the belt conveyor.

[0018] Compared with the prior art, the advantages of adopting this solution are:

[0019] When the coupling provided by the utility model is applied to a belt conveyor, in the assembled state, since the two connecting heads are arranged relative to each other in the axial direction, the axial spacing distance between the two connecting heads is greater than the axial length of the connecting heads, and the disassembly direction of the connecting arm is radial to the connecting heads. In this way, when it is necessary to remove the coupling, the connecting arm can be firstly pulled out and removed from between the two connecting heads in the radial direction, thereby freeing up a space between the two connecting heads for axial removal of the connecting heads. That is, taking the removal of the connecting head on the main shaft of the motor as an example, firstly, the lock between the connecting head and the main shaft of the motor is released, and then the connecting head can be pulled out axially to the side where the roller shaft of the belt conveyor is located.

[0020] It can be seen that according to the present invention, when the coupling needs to be removed, there is no need to axially move the motor and the roller shaft. In other words, the coupling can be removed without axially moving the motor and the roller shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the coupling structure provided by the utility model;

[0022] Figure 2 An exploded view of the coupling provided by the utility model;

[0023] Figure 3 This is a schematic diagram of the outer structure of the connector of the coupling of the utility model;

[0024] Figure 4 This is a schematic diagram of the inner structure of the connector of the utility model coupling;

[0025] Figure 5 A schematic diagram of the cross-sectional structure of the coupling provided by the utility model;

[0026] Figure 6 This is a disassembly state diagram of the coupling provided by the utility model.

[0027] Figure 7 for Figure 1 Enlarged view of part A in the middle;

[0028] Figure 8 for Figure 5 Enlarged view of middle part B;

[0029] Fig. 9 The utility model is a schematic structural diagram of a belt conveyor provided by the utility model. DETAILED DESCRIPTION

[0030] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0031] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0032] Example 1

[0033] See also Figure 1-9 As shown, this embodiment provides a coupling for a belt conveyor, which is mainly used to realize the connection between the main shaft 11 of the motor 1 (hereinafter referred to as the main shaft 11) and the roller shaft 2 of the belt conveyor (hereinafter referred to as the roller shaft 2). It is worth noting that the main shaft 11 and the roller shaft 2 are coaxially arranged, that is, the axes of the two coincide. In this way, when the motor 1 is started, the main shaft 11 can drive the roller shaft 2 to rotate synchronously in the same direction through the coupling, thereby realizing the conveying action of the belt conveyor.

[0034] In this embodiment, Figure 1 and Figure 2 As shown, the coupling includes two connecting heads 4 and a plurality of connecting arms 5. In this embodiment, the two connecting heads 4 have basically the same structure and are symmetrically designed, so this embodiment is specifically described below by taking one of the connecting heads 4 as an example; the shape of the connecting head 4 is basically disc-shaped.

[0035] For the convenience of explanation, the axial and radial directions claimed below in this embodiment may be understood as the axial and radial directions of the connector 4; it is worth noting that, in the assembled state, the coupling, the main shaft 11 and the roller shaft 2 are coaxially arranged.

[0036] The specific number of the connecting arms 5 can be selected according to actual needs. For example, this embodiment shows the situation of using four connecting arms 5. In addition, the connecting arms 5 in this embodiment are in the shape of long strips.

[0037] Two connectors 4, one of which is used to be detachably mounted on the main shaft 11 of the motor 1, and the other is used to be detachably mounted on the roller shaft 2 of the belt conveyor; for example, in this embodiment Figure 5 In the figure, the right connector 4 is mounted on the main shaft 11 of the motor 1, and the left connector 4 is mounted on the roller shaft 2 of the belt conveyor.

[0038] In this embodiment, the connection modes between the two connectors 4 and the main shaft 11 and the roller shaft 2 are basically the same, so the connection between the main shaft 11 and the connector 4 is taken as an example in this embodiment:

[0039] like Figure 3 As shown, an axial hole 41 coaxially arranged with the connector 4 is opened at the outer center of the connector 4 for the main shaft 11 to pass through, wherein the axial hole 41 is a blind hole, that is, the axial hole 41 does not pass through the connector 4, thus preventing the main shaft 11 from passing through the axial hole 41.

[0040] In addition, in order to prevent the main shaft 11 and the connector 4 from rotating relative to each other, one or more key grooves 42 are provided on the peripheral wall of the shaft hole 41 , and the key grooves 42 extend axially along the connector 4 .

[0041] The keyway 42 is mainly used to cooperate with the convex key 111 on the main shaft 11. After the convex key 111 is inserted into the keyway 42, the main shaft 11 and the connector 4 are relatively locked in the circumferential direction and will not rotate relative to each other.

[0042] The number and position relationship of the key slots 42 are mainly determined according to the number and position relationship of the convex keys 111 on the main shaft 11. For example, if two convex keys 111 are arranged opposite to each other on the main shaft 11, then two key slots 42 are also arranged opposite to each other.

[0043] In addition, in order to further lock the connection between the connector 4 and the main shaft 11, the coupling in this embodiment further includes a second bolt 441. The number of the second bolt 441 can be one or more, for example, two are shown in this embodiment.

[0044] like Figure 2 and Figure 5 As shown, the second bolt 441 is threadedly connected to the connecting head 4. Specifically, a second screw hole 44 extending axially along the connecting head 4 is opened on the outer peripheral wall of the connecting head 4, and the inner end of the second screw hole 44 passes through the groove wall of the key groove 42. The main shaft 11 is inserted into the shaft hole 41 until the end of the main shaft 11 abuts against the inner end wall of the shaft hole 41, and then the second bolt 441 is radially screwed into the second screw hole 44 until the inner end of the second bolt 441 abuts against the convex key 111 of the main shaft 11 to lock the connecting head 4 and the main shaft 11.

[0045] The connection method between the roller 2 and the other connector 4 is the same, and reference may be made to the above description, which will not be repeated here.

[0046] In the assembled state, the coupling is assembled to the main shaft 11 and the roller shaft 2, as shown in FIG. Figure 1 and Figure 5 As shown, the two connectors 4 are arranged relatively spaced apart in the axial direction, the spacing distance between the two is L1, and the axial length of the connector 4 is L2.

[0047] The connecting arm 5 is detachably connected between the two connecting heads 4 to keep the two connecting heads 4 relatively fixed. For example, in this embodiment, the connecting arm 5 extends axially along the connecting head 4, and its two ends are detachably mounted on the two connecting heads 4 respectively. In this way, under the connection of the connecting arm 5, the two connecting heads 4 are kept relatively fixed in the circumferential direction and can rotate synchronously in the same direction.

[0048] In addition, in this embodiment, the disassembly direction when the connecting arm 5 is disassembled from the connecting head 4 is the radial direction of the connecting head 4 , specifically, the radial outward direction, so that it is not limited by the axial limitation of the two connecting heads 4 .

[0049] Moreover, if Figure 5 As shown, the axial spacing distance L1 between the two connectors 4 is greater than the axial length L2 of the connector 4. The purpose of this arrangement is to ensure that the axial spacing distance between the two connectors 4 can ensure that the connector 4 can be axially moved and pulled out from the main shaft 11 or the roller shaft 2.

[0050] When the coupling needs to be removed, first remove the connecting arm 5 from the two connecting heads 4, then unscrew the second bolt, and then remove the connecting heads 4 step by step. Take the removal of the connecting head 4 on the main shaft 11 as an example:

[0051] like Figure 6 As shown, the connector 4 is pulled axially toward the connector 4 on the roller shaft 2 until the connector 4 is completely pulled out from the main shaft 11 ; thus, the removal of the connector 4 on the main shaft 11 is completed.

[0052] Then, the above steps can be followed to remove another connector 4.

[0053] It can be seen that when the coupling needs to be removed, there is no need to move the motor 1 and the roller 2. In other words, the coupling can be removed without moving the motor 1 and the roller 2.

[0054] The specific connection structure between the connector 4 and the connecting arm 5 is as follows: Since in this embodiment, the connection structures of the two connectors 4 and the connecting arms 5 are the same, this embodiment takes one of the connectors 4 as an example for specific description.

[0055] The connecting arm 5 is inserted into the connecting head 4 along the radial direction of the connecting head 4. Specifically, Figure 2 As shown, the two ends of the connecting arm 5 are respectively formed with an insertion portion 51; Figure 4 As shown, a slot 43 is provided on the inner side wall of the connector 4, which extends radially along the connector 4 and for the insertion portion 51 to be radially inserted, and the outer end of the slot 43 passes through the peripheral wall of the connector 4 as an insertion port for the insertion portion 51. The insertion portion 51 is radially inserted into the slot 43 from the insertion port. When removing, the insertion portion 51 can be pulled out of the slot 43 in the reverse direction, so that the removal direction of the connecting arm 5 is radial.

[0056] After the connecting arm 5 is inserted into the two connecting heads 4, the two connecting heads 4 cannot be axially moved closer to each other due to the restriction of the connecting arm 5. Since the axial hole 41 is a blind hole, the two joints cannot be axially moved away from each other either. This ensures that the two connecting heads 4, the main shaft 11 and the roller shaft 2 remain relatively fixed in the axial direction.

[0057] In addition, a limiting assembly is provided between the connecting arm 5 and the connecting head 4, and the limiting assembly is used to limit the radial movement of the connecting arm 5 relative to the connecting head 4 to prevent the connecting arm 5 from accidentally coming out radially from between the two connecting heads 4. Figure 8 As shown, in the radial direction, the inserting portion 51 is restricted between the limiting assembly and the end wall of the slot 43 .

[0058] In this embodiment, the number of slots 43 on the connector 4 is the same as the number of the connecting arms 5 , and one insertion portion 51 corresponds to one slot 43 ; preferably, the slots 43 are distributed in an array along the circumference of the connector 4 .

[0059] In addition, in order to improve the strength of the corners between the insertion portion 51 and the connecting arm 5, in this embodiment, the connecting arm 5 is provided with a reinforcing rib 52 on the inner side of the insertion portion 51. Preferably, the insertion portion 51, the connecting arm 5 and the reinforcing rib 52 are an integrated structure.

[0060] Among them, the specific structure of the limit component is:

[0061] like Figure 8 As shown, the limiting assembly includes an insert block 62 and a first bolt 63 corresponding to the connecting arm 5. The insert block 62 is movably arranged on the connecting head 4 along the axial direction of the connecting head 4. Specifically, as shown Figure 4 As shown, the connector 4 is provided with a through hole 45 axially penetrating the connector 4 at the position of the slot 43, and the insert block 62 is movably arranged in the through hole 45. Thus, under the restriction of the through hole 45, the insert block 62 can only move axially relative to the connector 4.

[0062] In addition, the reason why the insert block 62 is configured to be axially movable is to ensure that when the insertion portion 51 needs to be inserted into the slot 43, the insert block 62 will not hinder the insertion of the insertion portion 51. That is, when the insertion portion 51 needs to be inserted, the insert block 62 can be retracted so that the insert block 62 withdraws from the slot 43, so that the insert block 62 will not hinder the insertion of the insertion portion 51.

[0063] like Figure 7 and Figure 8 As shown, the insert block 62 at least partially extends into the slot 43 and is located outside the insert portion 51 (the outside here can also be understood as the end side of the insert portion 51);

[0064] The first bolt 63 is threadedly connected to the insert block 62, and the inner end of the first bolt 63 abuts against the insert portion 51. Specifically, Figure 2 As shown, a first screw hole 621 extending radially along the connector 4 is provided at the portion of the insert block 62 located in the slot 43; when fixing the connecting arm 5, the first bolt 63 is threadedly connected to the first screw hole 621, and the first bolt 63 is tightened so that the inner end of the first bolt 63 is pressed against the end of the insert portion 51, and the insert portion 51 is then radially restricted between the first bolt 63 and the bottom of the slot 43 (as shown in FIG. Figure 8 as shown).

[0065] It is worth explaining that the reason why this scheme adopts this limiting component is that: if the insertion part 51 and the connecting head 4 are connected by bolts, it is necessary to open a hole for the bolt connection on the insertion part 51, which will reduce the strength of the insertion part 51. In this scheme, there is no need to open a hole on the insertion part 51, and it relies on the abutment of the second bolt 63 to achieve fixation, which will not reduce the strength of the insertion part 51.

[0066] In addition, in this embodiment, Figure 2 As shown, the limit assembly also includes a connecting ring 61, and a recessed step 46 is formed on the outer side of the outer peripheral wall of the connecting head 4, and the connecting ring 61 is axially movably inserted into the recessed step 46; all the plug blocks 62 are fixed on the connecting ring 61. With this arrangement, when it is necessary to remove the lower connecting arm 5, the connecting ring 61 can be axially retracted to drive all the insertion parts 51 to retract at the same time, so as to avoid the insertion parts 51, so that the insertion parts 51 can be radially outwardly drawn out of the slot 43.

[0067] Example 2

[0068] like Fig. 9As shown, this embodiment further provides a belt conveyor based on Embodiment 1, which includes at least two rollers 2 arranged in parallel, a transmission belt 3 sleeved on the rollers 2, and a motor 1; one of the rollers 2 constitutes an active roller, which is used to achieve linkage with the motor 1, and the main shaft 11 of the motor 1 and the active roller are connected through the coupling provided in Embodiment 1. Specifically, one end of the roller 2 is fixed to the connecting head 4 on the left, and the shaft end of the main shaft 11 of the motor 1 is fixed to the connecting head 4 on the right.

[0069] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A coupling for a belt conveyor, used to connect the main shaft of a motor and the roller shaft of a belt conveyor, characterized in that: The coupling includes two connecting heads and a plurality of connecting arms, one of the two connecting heads is used to be detachably mounted on the main shaft of the motor, and the other is used to be detachably mounted on the roller shaft of the belt conveyor; in the assembled state, the two connecting heads are arranged with relative spacing along the axial direction; the connecting arms are detachably connected between the two connecting heads to keep the two connecting heads relatively fixed, wherein the disassembly direction of the connecting arms is the radial direction of the connecting heads, and the axial spacing distance between the two connecting heads is greater than the axial length of the connecting heads.

2. The coupling for a belt conveyor according to claim 1, characterized in that: The connecting arm is plugged into the connecting head along the radial direction of the connecting head, and a limiting component is provided between the connecting arm and the connecting head, and the limiting component is used to limit the radial movement of the connecting arm relative to the connecting head.

3. The coupling for a belt conveyor according to claim 2, characterized in that: Insertion parts are formed at both ends of the connecting arm, and a slot extending radially along the connecting head and for radial insertion of the insertion part is provided on the inner side wall of the connecting head, and the outer end of the slot passes through the peripheral wall of the connecting head; in the radial direction, the insertion part is restricted between the limit assembly and the end wall of the slot.

4. The coupling for a belt conveyor according to claim 3, characterized in that: The limiting assembly includes an insert block and a first bolt corresponding to the connecting arm one by one, the insert block is movably arranged on the connecting head along the axial direction of the connecting head, and the insert block at least partially extends into the slot and is located on the outside of the insertion part, the first bolt is threadedly connected to the insert block, and the inner end of the first bolt abuts against the insertion part.

5. The coupling for a belt conveyor according to claim 4, characterized in that: The connector is provided with a through hole axially penetrating the connector at the slot position, and the insert block is movably inserted in the through hole.

6. The coupling for a belt conveyor according to claim 4, characterized in that: The limit assembly also includes a connecting ring, a concave step is formed on the outer side of the outer peripheral wall of the connecting head, and the connecting ring is axially movably inserted into the concave step; all the plug blocks are fixed on the connecting ring.

7. The coupling for a belt conveyor according to claim 3, characterized in that: The connecting arm is provided with reinforcing ribs on the inner side of the insertion portion.

8. The coupling for a belt conveyor according to claim 3, characterized in that: All slots are distributed in an array along the circumference of the connector.

9. The coupling for a belt conveyor according to claim 1, characterized in that: An axial hole is provided at the center of the outer side of the connecting head, and the axial hole is a blind hole. One or more key grooves are provided on the peripheral wall of the axial hole. The coupling also includes a second bolt, which is threadedly connected to the connecting head and radially penetrates into the axial hole.

10. A belt conveyor, comprising at least two rollers arranged in parallel, a transmission belt sleeved on the rollers, and a motor; one of the rollers constitutes a driving roller, the main shaft of the motor and the driving roller are connected by a coupling, characterized in that: The coupling is a coupling for a belt conveyor as described in any one of claims 1 to 9.

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