Heavy impact idler set

Abstract

The utility model provides a heavy impact idler set which comprises a base, the base is provided with two supports, an idler set composed of a middle idler and side idler located on the two sides of the middle idler is hung between the two supports, the bottom of each support is rotationally connected with the base, and the rotating axis of each support is perpendicular to the rotating axis of the idler set. A synchronous buffering mechanism is arranged on the base, and under the action of the synchronous buffering mechanism, the two supports are in a synchronous opposite state and a synchronous reverse state when swinging. According to the carrier roller set, the two supports and the base are arranged to be of a hinged connection structure, then the base is provided with the synchronous buffering mechanism used for controlling the two supports to synchronously swing in the opposite direction and the reverse direction, and due to the fact that the two supports and the base are rotationally connected and matched with the buffering function of the synchronous buffering mechanism, the buffering effect of the carrier roller set is greatly improved; and the synchronous buffer mechanism has the function of controlling the two brackets to synchronously swing oppositely and reversely, so that the transmission stability of the transmission belt supported by the carrier roller group is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyor components, specifically a heavy-duty buffer idler group. Background Technique

[0002] The belt conveyor is the main equipment for modern bulk material transportation and is widely used in many industries such as metallurgy, mining, coal, ports, chemical industry, water conservancy, and electric power. The buffer idler group is an important component of the belt conveyor. The idler support of the buffer idler group is composed of a bottom plate, a cross beam, side supports, and a middle support. During the operation of the conveyor, the support forms the conveyor belt bearing surface through the supporting idlers, is installed on the intermediate frame of the conveyor, and receives the transferred falling material. During the material receiving process, the buffer idlers will continuously bear the impact brought by the falling material. Since the idler support is a rigid connection structure, all the impact forces are concentrated on the idlers, which easily causes damage to components such as the bearings and pipe bodies of the idlers.

[0003] The utility model with the publication number CN219429003U proposes a new type of hanging buffer idler group, belonging to the technical field of belt conveyor components. The new type of hanging buffer idler group includes buffer idlers. The buffer idlers form a trapezoidal conveyor belt bearing surface. The two ends of the buffer idlers are respectively hung on the idler support plates. The idler support plates are arranged vertically, and inclined spring braces are respectively arranged on the relative inner sides of the two side idler support plates. The hanging buffer idler group designed by the utility model has a simple and practical structure and good deformation adaptability.

[0004] However, the above-mentioned existing technology still has the following deficiencies in use: 1. An inclined spring brace is arranged on one side of the support. The inclined spring brace cooperates with the elastic deformation of the support to buffer the impact load. This kind of buffer structure using the rigid elastic deformation of the support has the defect of poor buffer effect; 2. The buffer idlers as a whole are in a suspended state and can also swing back and forth. That is to say, there is a lack of the existing front-back swing limiting function, which easily causes adjacent buffer idlers to collide with each other, reducing the service life of the buffer idlers.

[0005] Therefore, the utility model provides a heavy-duty buffer idler group. Content of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a heavy-duty buffer idler group to solve the problems raised in the above background technique. The utility model improves the stability of the idler group in supporting and transmitting the conveyor belt while having a buffer function, and also has the function of preventing the idler group from swinging back and forth and colliding with each other, improving the service life of the idler group.

[0007] To achieve the above object, the present utility model is realized through the following technical solutions: a heavy-duty buffer idler group, including a base, the base is provided with two brackets, a idler group composed of a middle idler and side idlers located on both sides of the middle idler is suspended between the two brackets, the bottom of the bracket is rotatably connected to the base and the rotation axis is perpendicular to the rotation axis of the idler group, a synchronous buffer mechanism is arranged on the base, and under the action of this synchronous buffer mechanism, when the two brackets swing, they are in a synchronous opposite and reverse state.

[0008] Further, the synchronous buffer mechanism includes a middle gear, a rack, a support rod and a buffer rod. The middle gear is rotatably arranged on the top of the base. The number of the racks is two and they are slidably connected to the base. The two racks are respectively located on both sides of the middle gear, and the tops of the two racks are respectively located near the two brackets and are respectively hinged to the adjacent brackets through support rods, and the ends of the racks far from the support rods are connected to the adjacent brackets through buffer rods.

[0009] Further, one end of the support rod is hinged to a position near the top of the bracket, one end of the buffer rod is hinged to a position near the bottom of the bracket and the other end is hinged to one end of the rack.

[0010] Further, the buffer rod includes a guide sleeve, a shock-absorbing spring located in the guide sleeve, and a connecting rod with one end sleeved in the guide sleeve.

[0011] Further, a V-shaped limiting idler group is arranged on the top of the base under the middle idler. The V-shaped limiting idler group is elastically slidably connected to the base up and down, and the lower part of the middle idler is located in the V-shaped groove formed by the V-shaped limiting idler group.

[0012] Further, the V-shaped limiting idler group includes a guide post, a V-shaped wheel frame and two retaining rollers located on the top of the V-shaped wheel frame. The guide post is elastically slidably connected to the base and its top is fixedly connected to the bottom of the V-shaped wheel frame, and the two retaining rollers are abutted against the middle idler.

[0013] Further, a gantry frame is welded on the top of the base, a limiting sleeve sleeved outside the guide post is welded on the top of the gantry frame, and a support spring is sleeved on the guide post between the limiting sleeve and the V-shaped wheel frame.

[0014] The beneficial effects of the present utility model are as follows:

[0015] In the present utility model, the two brackets and the base are arranged in a hinged connection structure, and a synchronous buffer mechanism for controlling the synchronous opposite and reverse swinging of the two brackets is arranged on the base. Since the two brackets are rotatably connected to the base and cooperate with the buffering function of the synchronous buffer mechanism, the buffering effect of the present idler group is greatly improved. Moreover, the synchronous buffer mechanism has the function of controlling the synchronous opposite and reverse swinging of the two brackets, thereby ensuring the stability of the transmission of the conveyor belt supported by the idler group.

[0016] In the present utility model, by arranging a V-shaped limiting roller group on the top of the base, the V-shaped limiting roller group is used to limit the front and back swinging of the middle idler, so that the middle idler can only move up and down. This setting prevents the idler group from swinging back and forth and colliding with adjacent idler groups when supporting the conveyor belt, thus improving the service life of the idler group. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the heavy-duty buffer idler group of the present utility model;

[0018] Figure 2 is Figure 1 the front view of

[0019] Figure 3 is a cross-sectional view of the buffer rod of the heavy-duty buffer idler group of the present utility model;

[0020] In the figure: 1, base; 12, gantry; 121, limit sleeve; 2, bracket; 3, middle idler; 4, side idler; 5, synchronous buffer mechanism; 51, middle gear; 52, rack; 53, support rod; 54, buffer rod; 541, guide sleeve; 542, shock-absorbing spring; 543, connecting rod; 6, V-shaped limiting roller group; 61, guide post; 62, V-shaped wheel frame; 63, stop roller; 7, support spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please refer to Figures 1 to 3 , the present utility model provides a technical solution: a heavy-duty buffer idler group. The present idler group is arranged in a row on the conveyor belt rack. The present idler group includes a base 1. During use, the base 1 is installed on the conveyor belt rack by bolts. The base 1 is provided with two brackets 2. A idler group composed of a middle idler 3 and side idlers 4 located on both sides of the middle idler 3 is suspended between the two brackets 2. A trapezoidal groove for accommodating and supporting the conveyor belt is formed above the idler group. Both ends of the rotating shaft of the middle idler 3 are hinged to one end of the rotating shaft of the adjacent side idler 4, and the other end of the rotating shaft on the side idler 4 is hinged to the bent part on the bracket 2.

[0023] In this technical solution, the bottom of the bracket 2 is rotatably connected to the base 1, and the rotation axis is perpendicular to the axis of rotation of the roller group. That is to say, when the roller group moves downward, the two brackets 2 swing inward, and when the roller group moves upward as a whole, the two brackets 2 swing outward. A synchronous buffer mechanism 5 is provided on the base 1. The synchronous buffer mechanism 5 is located between the two brackets 2. Under the action of the synchronous buffer mechanism 5, the two brackets 2 swing in a synchronous opposite and reverse state. That is to say, the function of the synchronous buffer mechanism 5 is to buffer the swing of the two brackets 2 and limit the swing of the two brackets 2 at the same time, so that the roller group as a whole has the function of buffering and supporting the conveyor belt, and also has the function of stably supporting the conveyor belt.

[0024] Specifically, the synchronous buffer mechanism 5 includes a middle gear 51, a rack 52, a support rod 53 and a buffer rod 54. The middle gear 51 is rotatably arranged on the top of the base 1. The number of the racks 52 is two and they are slidably connected to the base 1. The two racks 52 are respectively located on both sides of the middle gear 51, and the tops of both of them are respectively close to the two brackets 2 and are respectively hinged to the adjacent brackets 2 through the support rods 53. The two racks 52 are parallel. Due to the rotation limiting effect of the middle gear 51, the two racks 52 are in a synchronous opposite and reverse movement state. Thus, when the two brackets 2 respectively push the racks 52 to slide through the support rods 53, they will always be in a symmetrical state relative to the axis of the middle gear 51. A buffer rod 54 is connected between the end of the rack 52 far from the support rod 53 and the adjacent bracket 2. The buffer rod 54 plays a role in damping and buffering the rack 52.

[0025] Preferably, one end of the support rod 53 is hinged to a position near the top of the bracket 2. One end of the buffer rod 54 is hinged to a position near the bottom of the bracket 2 and the other end is hinged to one end of the rack 52. This setting can effectively control the swing amplitude of the bracket 2, that is to say, it can make the bracket 2 swing within a small range, ensuring the strength of the bracket 2 to support the roller group.

[0026] In this embodiment, the buffer rod 54 includes a guide sleeve 541, a shock-absorbing spring 542 located in the guide sleeve 541 and a connecting rod 543 with one end sleeved in the guide sleeve 541. One end of the guide sleeve 541 is hinged to one end of one of the racks 52, and the other end of the connecting rod 543 is hinged to the opposite bracket 2

[0027] In this embodiment, a V-shaped limiting roller group 6 is provided on the top of the base 1 below the middle roller 3. The V-shaped limiting roller group 6 is elastically slidably connected to the base 1 up and down. The lower part of the middle roller 3 is located in the V-shaped groove formed by the V-shaped limiting roller group 6. The function of the V-shaped limiting roller group 6 is to prevent the roller group from swinging back and forth and avoid the problem of collision and damage of adjacent roller groups.

[0028] Furthermore, the V-shaped limiting roller set 6 includes a guide post 61, a V-shaped wheel frame 62, and two retaining rollers 63 located at the top of the V-shaped wheel frame 62. The guide post 61 is elastically and slidably connected to the base 1, and its top is fixedly connected to the bottom of the V-shaped wheel frame 62. The two retaining rollers 63 are in contact with the middle roller 3. When the middle roller 3 rotates, it will drive the retaining rollers 63 to rotate. When the middle roller 3 moves up and down, the two retaining rollers 63 will follow the movement.

[0029] Specifically, a gantry frame 12 is welded to the top of the base 1. A limiting sleeve 121 sleeving the outside of the guide post 61 is welded to the top of the gantry frame 12. A support spring 7 is sleeved on the guide post 61 and located between the limiting sleeve 121 and the V-shaped wheel frame 62. The support spring 7 continuously provides an upward elastic thrust to the V-shaped wheel frame 62, so that the two retaining rollers 63 are pressed against the middle roller 3.

[0030] Working principle: When the conveyor belt above the roller set is subjected to a downward impact force, the roller set will sink, and the two brackets 2 will swing inward. Due to the limiting effect of the middle gear 51 and the two racks 52, the angles of inward swing of the two brackets 2 are equal. At the same time, the shock-absorbing spring 542 in the buffer rod 54 is compressed to achieve the impact buffering function. When the conveyor belt above the roller set is running, due to the blocking effect of the retaining roller 63, the middle roller 3 cannot swing back and forth, avoiding collisions between adjacent roller sets.

[0031] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heavy-duty buffer roller group, comprising a base (1), wherein the base (1) is provided with two brackets (2), and a roller group consisting of a middle roller (3) and side rollers (4) located on both sides of the middle roller (3) is suspended between the two brackets (2), characterized in that: The bottom of the bracket (2) is rotatably connected to the base (1), and the rotation axis is perpendicular to the rotation axis of the roller group. A synchronous buffer mechanism (5) is provided on the base (1). Under the action of the synchronous buffer mechanism (5), the two brackets (2) are in a synchronous opposite and reverse state when swinging.

2. The heavy-duty buffer roller assembly according to claim 1 is characterized in that: The synchronous buffer mechanism (5) comprises a middle gear (51), a rack (52), a support rod (53) and a buffer rod (54); the middle gear (51) is rotatably arranged on the top of the base (1); the number of the racks (52) is two and they are slidably connected to the base (1); the two racks (52) are respectively located on both sides of the middle gear (51) and the tops of the two racks are respectively located near two brackets (2) and are respectively hingedly connected to the adjacent brackets (2) through the support rod (53); and the end of the rack (52) away from the support rod (53) is connected to the adjacent bracket (2) through the buffer rod (54).

3. The heavy-duty buffer roller assembly according to claim 2 is characterized in that: One end of the support rod (53) is hingedly connected to a position on the bracket (2) near the top, one end of the buffer rod (54) is hingedly connected to a position on the bracket (2) near the bottom, and the other end is hingedly connected to one end of the rack (52).

4. The heavy-duty buffer roller assembly according to claim 3 is characterized in that: The buffer rod (54) comprises a guide sleeve (541), a shock absorbing spring (542) located in the guide sleeve (541), and a connecting rod (543) with one end sleeved inside the guide sleeve (541).

5. The heavy-duty buffer roller assembly according to claim 1 is characterized in that: A V-shaped limiting roller group (6) located below the middle roller (3) is arranged on the top of the base (1); the V-shaped limiting roller group (6) and the base (1) are elastically slidably connected up and down; the lower part of the middle roller (3) is located in a V-shaped groove formed by the V-shaped limiting roller group (6).

6. The heavy-duty buffer roller assembly according to claim 5, characterized in that: The V-shaped limiting roller group (6) comprises a guide column (61), a V-shaped wheel frame (62) and two stop rollers (63) located at the top of the V-shaped wheel frame (62); the guide column (61) is elastically slidably connected to the base (1) and its top is fixedly connected to the bottom of the V-shaped wheel frame (62); the two stop rollers (63) and the middle roller (3) are abutted against each other.

7. The heavy-duty buffer roller assembly according to claim 6, characterized in that: A door frame (12) is welded to the top of the base (1), a limit sleeve (121) sleeved on the outside of the guide column (61) is welded to the top of the door frame (12), and the guide column (61) is sleeved with a support spring (7) located between the limit sleeve (121) and the V-shaped wheel frame (62).

Images