Transmission belt tensioning buffer device and inching type conveyor thereof

Abstract

The utility model discloses a transmission belt tensioning and buffering device and an inching type conveyor thereof. The tensioning and buffering device comprises a support, a buffering shaft, a positioning pin, a buffering spring and a tensioning wheel. The support is provided with a first through hole, a first guide groove and a second guide groove which are consistent in extending direction, and the first guide groove and the second guide groove are formed in the two sides of the first through hole respectively and communicated with the first through hole. The buffer shaft penetrates through the first through hole; the buffer shaft is provided with a second through hole, and the positioning pin sequentially penetrates through the first guide groove, the second through hole and the second guide groove; a limiting structure is arranged at the upper end of the first through hole, and the buffer spring sleeves the buffer shaft and is arranged between the limiting structure and the positioning pin; the tensioning wheel is rotationally connected to the lower end of the buffering shaft. The tension adjusting device has the advantages that the tension of the transmission belt can be automatically adjusted, the transmission belt of the conveyor can keep proper tension in the moving process, impact force generated when the transmission belt moves can be effectively absorbed, and damage to the conveyor and materials is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission belt technical field, concretely relates to a transmission belt tensioning buffer device and inching conveyor. BACKGROUND

[0002] In the production of tobacco industry silk flow line, conveyor is widely used as an important material handling equipment. Among them, the inching conveyor is particularly favored because it can realize intermittent and accurate control of material movement. The device is usually composed of a conveyor belt transmission mechanism and an inching mechanism. However, the traditional inching conveyor does not set a separate transmission chain tensioning mechanism after a long time of running, which leads to the fact that the transmission chain often causes tension to decrease due to wear, thereby affecting the stability and accuracy of the conveyor. In addition, the impact of the chain during start and stop will also damage the whole system. Therefore, how to effectively tension the chain and buffer the impact during start and stop has become a problem to be solved. SUMMARY

[0003] In order to solve at least one of the above technical problems, the utility model provides a transmission belt tensioning buffer device and inching conveyor, the tensioning buffer device automatically adjusts the tension of the transmission belt through the elastic force of the buffer spring, absorbs the impact load received by the transmission belt, and keeps the transmission belt running smoothly.

[0004] The utility model solves the technical problems by adopting the following technical scheme:

[0005] A transmission belt tensioning buffer device, comprising a bracket, a buffer shaft, a positioning pin, a buffer spring and a tensioning wheel; the bracket is provided with a first through hole, a first guide groove and a second guide groove with consistent extension direction, the first guide groove and the second guide groove are respectively arranged on both sides of the first through hole and are in communication with the first through hole; the buffer shaft passes through the first through hole; the buffer shaft is provided with a second through hole, the positioning pin passes through the first guide groove, the second through hole and the second guide groove in sequence; the upper end of the first through hole is provided with a limiting structure, the buffer spring is sleeved on the buffer shaft and is arranged between the limiting structure and the positioning pin; the tensioning wheel is rotationally connected to the lower end of the buffer shaft.

[0006] Further, the bracket comprises a housing and a fixed seat, the housing comprises a connecting plate and a sleeve arranged on one side of the connecting plate, and the first through hole, the first guide groove and the second guide groove are arranged in the sleeve; the connecting plate is connected to the fixed seat by a first bolt.

[0007] Further, the first through hole is a stepped hole, the upper end opening of which is smaller than the lower end opening, and the step of the stepped hole forms a limiting structure to limit the upper end of the buffer spring.

[0008] Further, the fixing seat is provided with a long hole with an extension direction consistent with that of the first through hole, facilitating height adjustment of the fixing seat.

[0009] Further, the long hole includes at least two rows arranged on two sides of the fixing seat respectively, so that the fixing seat is balanced in force and connected more firmly.

[0010] Further, at least one of the first guide groove and the second guide groove is provided with a scale arranged along the extension direction thereof, so that the height of the positioning pin can be accurately recorded.

[0011] Further, the tensioning and buffering device further includes a tensioning shaft, a first end of the tensioning shaft being connected to a lower end of the buffering shaft, and the tensioning wheel being connected to a second end of the tensioning shaft through a bearing, so that the tensioning wheel rotates smoothly when in contact with the transmission belt.

[0012] Further, the tensioning shaft is screw-connected to the buffering shaft, facilitating quick assembly.

[0013] Further, the second through hole is a threaded hole, and the positioning pin is a stud, so that the positioning pin is firmly connected to the second through hole and is prevented from falling off.

[0014] Further, a movable conveyor includes the tensioning and buffering device described above and further includes a transmission chain, the tensioning wheel is a tensioning sprocket and is engaged with the transmission chain, and the buffering spring is in a compressed state.

[0015] Compared with the prior art, the tensioning and buffering device has the following advantages:

[0016] (1) The tensioning and buffering device can automatically adjust the tension of the transmission belt, so that the transmission belt of the conveyor maintains appropriate tension during movement, and material positioning inaccuracy and equipment damage caused by transmission belt slack are avoided.

[0017] (2) The tensioning and buffering device effectively absorbs the impact force during transmission belt movement, reduces damage to the conveyor and the material, effectively prolongs the service life of the transmission belt, and reduces the cost of spare parts.

[0018] (3) The tensioning and buffering device has a simple structure and is convenient and quick to install; it can automatically adjust according to the movement of the transmission belt without manual intervention, greatly improving work efficiency and safety. BRIEF DESCRIPTION OF DRAWINGS

[0019] For better understanding of the above and other objects, features, characteristics, advantages and functions of the present application, reference should be made to the embodiments illustrated in the drawings. The same reference numerals in the drawings designate the same components. It should be understood by those skilled in the art that the drawings are intended to schematically illustrate the preferred embodiments of the present application, and have no limiting effect on the scope of the present application, and the components in the drawings are not drawn to scale.

[0020] Figure 1 It is a front view structural schematic diagram of the drive belt tensioning and buffering device of the present application (part of the shell is cut off).

[0021] Figure 2 It is another view structural schematic diagram of the drive belt tensioning and buffering device of the present application.

[0022] Figure 3 It is a structural schematic diagram of the shell of the present application.

[0023] Figure 4 It is an A-A sectional view structural schematic diagram of the shell of the present application.

[0024] Figure 5 It is a structural schematic diagram of the fixed seat of the present application.

[0025] Figure 6 It is a structural schematic diagram of the tensioning shaft of the present application.

[0026] Figure 7 It is a structural schematic diagram of the movable conveyor of the present application.

[0027] In the figure: 100-tensioning and buffering device; 1-bracket; 11-shell; 111-connection plate; 112-sleeve; 113-first through hole; 1131-step; 114-first guide groove; 115-second guide groove; 12-fixed seat; 121-long hole; 122-third through hole; 2-buffering shaft; 21-second threaded hole; 22-handle; 3-positioning pin; 4-buffering spring; 5-tensioning wheel; 6-tensioning shaft; 61-threaded part; 200-drive chain; 300-conveyor side plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present application more clear, the following describes the exemplary embodiments of the present application with reference to the drawings, which includes various details of the embodiments of the present application to help understanding, and they should be considered as only exemplary. Therefore, those skilled in the art should realize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, in order to be clear and concise, the description in the following description omits the description of the known functions and structures.

[0029] In the description of the utility model, it is necessary to explain that the term "comprising" and its variants represent open inclusion, namely "including but not limited to". The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, in the description of the utility model, the meaning of "multiple" is at least two, for example two, three and the like, unless otherwise explicitly specified. The terms "upper", "lower" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the utility model product is used, or the orientation or position relationship commonly understood by those skilled in the art, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the utility model.

[0030] The utility model provides a kind of transmission belt tensioning buffer device 100, refer to Figures 1-7 As shown, including support 1, buffer shaft 2, positioning pin 3, buffer spring 4 and tensioning wheel 5.The support 1 is provided with the first through hole 113, the first guide slot 114 and the second guide slot 115 of consistent extension direction, the first guide slot 114 and the second guide slot 115 are respectively arranged in the two sides of first through hole 113, and with first through hole 113 through;The buffer shaft 2 passes through first through hole 113;The buffer shaft 2 is provided with second through hole, the positioning pin 3 sequentially passes through first guide slot 114, second through hole and second guide slot 115.The first through hole 113 upper end is provided with limiting structure, the buffer spring 4 is sleeved on buffer shaft 2, and is arranged between limiting structure and positioning pin 3;The tensioning wheel 5 is rotatably connected to the lower end of buffer shaft 2.

[0031] According to the transmission belt that tensioning wheel 5 needs to be tensioned, tensioning wheel 5 can be set to be compatible with the tensioning sprocket or tensioning roller of transmission belt. For example, when transmission belt is transmission chain 200, tensioning wheel 5 is set to be tensioning sprocket, when transmission belt is transmission belt, tensioning wheel 5 is set to be tensioning roller.

[0032] The upper end of the buffer spring 4 is limited by the limiting structure, when the buffer spring 4 is in the compressed state, the positioning pin 3 can be applied with a downward elastic force, thereby the tensioning wheel 5 can be applied with a downward thrust force, so that the tensioning wheel 5 can be tightly pressed against the transmission belt, and the tensioning wheel 5 can provide tension for the transmission belt. When the movement of the transmission belt fluctuates, the tensioning wheel 5 is pushed upward, the tensioning wheel 5 drives the buffer shaft 2 to move upward, thereby the positioning pin 3 moves upward along the first guide groove 114 and the second guide groove 115, the buffer spring 4 is further compressed, and the height of the tensioning wheel 5 is raised. When the transmission belt is relaxed, the upward pushing force of the transmission belt on the tensioning wheel 5 is reduced, the buffer spring 4 is stretched, the positioning pin 3 is driven to move downward along the first guide groove 114 and the second guide groove 115, the tensioning wheel 5 is driven to move downward, and the height of the tensioning wheel 5 is lowered, so that the tensioning wheel 5 can still be tightly pressed against the transmission belt, and the transmission belt can be provided with tension. The height of the tensioning wheel 5 can be adjusted by the elastic force of the buffer spring 4, so that the tensioning wheel 5 can be kept in contact with the transmission belt, and the transmission belt can be kept in a stable state.

[0033] In one embodiment, as shown in Figure 3 and Figure 5 The bracket 1 includes a housing 11 and a fixing base 12, the housing 11 includes a connecting plate 111 and a sleeve 112 arranged on one side of the connecting plate 111, and the first through hole 113, the first guide groove 114 and the second guide groove 115 are arranged on the sleeve 112. The housing 11 and the fixing base 12 can be detachably connected, the connecting plate 111 is connected to the fixing base 12 by the first bolt, and the housing 11 and the fixing base 12 are respectively machined, so that the machining is convenient. In order to be firmly connected, a plurality of first threaded holes can be arranged on the connecting plate 111, a plurality of third through holes 122 are correspondingly arranged in the middle of the fixing base 12, the first bolt passes through the third through hole 122 and is screwed into the first threaded hole to fix the connecting plate 111 on the fixing base 12.

[0034] In one embodiment, as shown in Figure 4 The first through hole 113 is arranged as a stepped hole, the upper end opening of the stepped hole is smaller than the lower end opening, and the step 1131 of the stepped hole forms the limiting structure for limiting the upper end of the buffer spring 4. When the buffer spring 4 is installed, the buffer spring 4 can be sleeved on the buffer shaft 2 from the lower end opening of the first through hole 113, so that the installation is convenient. The step 1131 limits the upper end of the buffer spring 4, the positioning pin 3 limits the lower end of the buffer spring 4, and the buffer spring 4 can be limited between the step 1131 and the positioning pin 3, so that the buffer spring 4 can generate a downward thrust force on the tensioning wheel 5 in the compressed state.

[0035] The limiting structure only needs to be able to limit the upper end of the buffer spring 4, so that the upper end of the buffer spring 4 cannot move. For example, a baffle can also be arranged on the side wall of the first through hole 113, and the baffle forms the limiting structure for limiting the upper end of the buffer spring 4.

[0036] The tensioning buffer device 100 works, the tensioning wheel 5 is in contact with the transmission belt, the fixed seat 12 is fixed on the conveyor side plate 300 after the tension of the transmission belt is appropriate, the height of the tensioning wheel 5 is maintained, so as to ensure the tension of the transmission belt. The height of the limiting structure can be adjusted by adjusting the height of the fixed seat 12 relative to the transmission belt, so as to adjust the thrust of the buffer spring 4 and the height of the tensioning wheel 5, and adjust the tension of the transmission belt. In order to facilitate the adjustment of the height of the fixed seat 12, a long hole 121 with the same extension direction as the first through hole 113 can be arranged on the fixed seat 12, and the second bolt is used to fix the fixed seat 12 on the conveyor side plate 300. In this way, by adjusting the height of the long hole 121, the height of the fixed seat 12 can be adjusted, so as to adjust the overall height of the tensioning buffer device 100.

[0037] Preferably, the long hole 121 includes at least two rows arranged on both sides of the fixed seat 12, so that the fixed seat 12 is balanced in force and connected more firmly. Each row can be provided with a long hole 121 with a longer extension length, or a plurality of long holes 121. The shell 11 is connected to the middle of the fixed seat 12, and the fixed seat 12 is connected to the conveyor side plate 300 on both sides, so that the fixed seat 12 is balanced in force and connected more firmly.

[0038] In one embodiment, at least one of the first guide groove 114 and the second guide groove 115 is provided with a scale along the extension direction thereof. Preferably, the scale can be arranged in the guide groove for convenient observation. After the tensioning buffer device 100 is installed, the tensioning wheel 5 is in contact with the transmission belt, and the buffer spring 4 is in a slightly compressed state, at this time, the initial scale of the scale where the positioning pin 3 is located can be recorded. Through regular inspection, the stretching and wear condition of the transmission belt can be monitored according to the scale where the positioning pin 3 is located. When the scale where the positioning pin 3 is located changes too much, the height of the tensioning wheel 5 can be adjusted by adjusting the position of the long hole 121 of the fixed seat 12, or the appropriate buffer spring 4 is replaced, so as to adjust the degree of contact between the tensioning wheel 5 and the transmission belt, to control the size of the tension of the transmission belt. According to the scale position of the scale where the positioning pin 3 is located, the stretching and wear condition of the transmission belt can be more accurately judged, and the adjustment of the positioning pin 3 by the scale is more convenient and fast, and the visual and accurate adjustment of the tension can be realized.

[0039] In one embodiment, reference is made to Figure 1 and Figure 6As shown, the tensioning and buffering device 100 further comprises a tensioning shaft 6, a first end of the tensioning shaft 6 being connected to a lower end of the buffering shaft 2, and the tensioning wheel 5 being connected to a second end of the tensioning shaft 6 through a bearing, so that the tensioning wheel 5 rotates smoothly when being in contact with the transmission belt. Preferably, a second threaded hole 21 can be arranged at the lower end of the buffering shaft 2, and a threaded part 61 matched with the second threaded hole 21 can be arranged at the first end of the tensioning shaft 6, so that the tensioning shaft 6 is screwed on the buffering shaft 2, the tensioning shaft 6 is threadedly connected to the buffering shaft 2, and the assembly is convenient and fast and the connection is firm.

[0040] The positioning pin 3 can be a cylindrical pin, a split pin or the like, as long as it can be inserted into the first guide groove 114, the second through hole and the second guide groove 115 to limit the buffering spring 4. Preferably, the second through hole is a threaded hole, and the positioning pin 3 is a stud, which can be screwed into the second through hole after being inserted through the first guide groove 114, until the positioning pin 3 is screwed out of the second guide groove 115, so that the positioning pin 3 is fixed in the second through hole, the connection is firm, and the positioning pin 3 is prevented from falling off when the transmission belt is bounced by a load impact. In order to facilitate the insertion of the buffering shaft 2 into the first through hole 113, as shown, a handle 22 can be arranged at the upper end of the buffering shaft 2, which is convenient to hold and place, and can prevent the buffering shaft 2, the tensioning shaft 6 and the tensioning wheel 5 from being pulled out of the first through hole 113 when the positioning pin 3 falls out, thereby improving safety. Figure 1

[0041] The utility model further provides a kind of inching conveyor, as shown in Figure 7 As shown, the tensioning and buffering device 100 further comprises a tensioning and buffering device 100, further comprising a transmission chain 200, the tensioning wheel 5 is arranged as a tensioning sprocket, and is engaged with the transmission chain 200;The buffering spring 4 is in a compressed state. The tensioning wheel 5 is arranged at the lowest point of the transmission chain 200, which is the best, and in this embodiment, the tensioning wheel 5 is arranged outside the transmission chain 200 due to the limited installation space, and other chain transmission devices can also arrange the tensioning wheel 5 inside the transmission chain 200.

[0042] The working process of the tensioning and buffering device 100 for tensioning the transmission chain 200 is as follows:

[0043] When in use, the tensioning wheel 5 is engaged with the transmission chain 200, so that the buffering spring 4 is in a slightly compressed state, and the tension of the transmission chain 200 is appropriate. At this time, the pushing force of the buffering spring 4 on the tensioning wheel 5 is balanced with the lifting force of the transmission chain 200 on the tensioning wheel 5, which can ensure the normal and stable operation of the transmission chain 200. When the transmission chain 200 is stretched and relaxed, the buffering spring 4 automatically extends downward to press against the positioning pin 3, adjusts the height of the tensioning wheel 5, and keeps the tensioning wheel 5 in contact with the transmission chain 200 at all times. Through the elastic force of the buffering spring 4, the tension of the transmission chain 200 is automatically adjusted to ensure that the transmission chain 200 is always in the best working state. ​

[0044] When the transmission chain 200 starts or turns, the transmission chain 200 is instantaneously bounced or collapsed by the impact of instantaneous load, the transmission chain 200 pushes up the tensioning wheel 5, the tensioning wheel 5 drives the tensioning shaft 6 to be pushed up, thereby driving the buffer shaft 2 to be pushed up, the positioning pin 3 further compresses the buffer spring 4, thereby absorbing the impact load of the transmission chain 200. When the transmission chain 200 runs smoothly, after the instantaneous impact load ends, the transmission chain 200 returns to the working position, the buffer spring 4 is elongated downward to reset the tensioning wheel 5, and the tensioning wheel 5 is kept in contact with the transmission chain 200. In this way, the impact load generated by the instantaneous start of the transmission chain 200 can be buffered and absorbed by the compression and stretching of the buffer spring 4, the transmission chain 200 runs smoothly, and the impact load generated by the instantaneous start of the transmission chain 200 is prevented from being completely absorbed by the transmission chain 200 itself, thereby preventing the transmission chain 200 from being abnormally stretched and worn and prolonging the service life of the transmission chain 200.

[0045] By using the tensioning and buffering device 100, the transmission chain 200 of the conveyor can maintain appropriate tension during movement, and the inaccurate positioning of materials and the damage of equipment caused by the slackening of the transmission chain 200 are avoided. The tensioning and buffering device 100 effectively absorbs the impact force of the transmission chain 200 during movement, reduces the damage to the conveyor and the materials, effectively prolongs the service life of the transmission chain 200, and reduces the cost of spare parts. The tensioning and buffering device 100 can automatically adjust according to the movement of the transmission chain 200 without manual intervention, greatly improving the work efficiency and safety.

[0046] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A drive belt tensioning damper, characterized by, The tensioning and buffering device comprises a bracket, a buffering shaft, a positioning pin, a buffering spring and a tensioning wheel; the bracket is provided with a first through hole, a first guide slot and a second guide slot, the first guide slot and the second guide slot are respectively arranged on the two sides of the first through hole and are in communication with the first through hole; the buffering shaft passes through the first through hole; the buffering shaft is provided with a second through hole, the positioning pin passes through the first guide slot, the second through hole and the second guide slot in sequence; the upper end of the first through hole is provided with a limiting structure, the buffering spring is sleeved on the buffering shaft and is arranged between the limiting structure and the positioning pin; the tensioning wheel is rotationally connected to the lower end of the buffering shaft.

2. The drive belt tensioner of claim 1, wherein The bracket comprises a shell and a fixing base, the shell comprises a connecting plate and a sleeve arranged on one side of the connecting plate, and the first through hole, the first guide slot and the second guide slot are arranged on the sleeve; the connecting plate is connected to the fixing base through a first bolt.

3. A drive belt tensioner as in any of claims 1 or 2, wherein: The first through hole is arranged as a stepped hole, the upper end opening of the stepped hole is smaller than the lower end opening, and the step of the stepped hole forms the limiting structure.

4. The drive belt tensioner of claim 2 wherein, The fixing base is provided with a long hole with the same extension direction as the first through hole.

5. The drive belt tensioner of claim 4, wherein, The long hole comprises at least two rows and is arranged on the two sides of the fixing base.

6. The drive belt tensioner of claims 1 or 4, wherein, At least one of the first guide slot and the second guide slot is provided with a scale arranged along the extension direction thereof.

7. The drive belt tensioner of claim 1 wherein, The tensioning and buffering device further comprises a tensioning shaft, the first end of the tensioning shaft is connected to the lower end of the buffering shaft, and the tensioning wheel is connected to the second end of the tensioning shaft through a bearing.

8. The drive belt tensioner of claim 7, wherein, The tensioning shaft is threadedly connected to the buffering shaft.

9. The drive belt tensioner of claim 1 wherein, The second through hole is arranged as a threaded hole, and the positioning pin is arranged as a stud.

10. A mobile conveyor, characterized by The tensioning and buffering device comprises a bracket, a buffering shaft, a positioning pin, a buffering spring and a tensioning wheel; the bracket is provided with a first through hole, a first guide slot and a second guide slot, the first guide slot and the second guide slot are respectively arranged on the two sides of the first through hole and are in communication with the first through hole; the buffering shaft passes through the first through hole; the buffering shaft is provided with a second through hole, the positioning pin passes through the first guide slot, the second through hole and the second guide slot in sequence; the upper end of the first through hole is provided with a limiting structure, the buffering spring is sleeved on the buffering shaft and is arranged between the limiting structure and the positioning pin; the tensioning wheel is rotationally connected to the lower end of the buffering shaft. The bracket comprises a shell and a fixing base, the shell comprises a connecting plate and a sleeve arranged on one side of the connecting plate, and the first through hole, the first guide slot and the second guide slot are arranged on the sleeve; the connecting plate is connected to the fixing base through a first bolt. The first through hole is arranged as a stepped hole, the upper end opening of the stepped hole is smaller than the lower end opening, and the step of the stepped hole forms the limiting structure. The fixing base is provided with a long hole with the same extension direction as the first through hole. The long hole comprises at least two rows and is arranged on the two sides of the fixing base. At least one of the first guide slot and the second guide slot is provided with a scale arranged along the extension direction thereof. The tensioning and buffering device further comprises a tensioning shaft, the first end of the tensioning shaft is connected to the lower end of the buffering shaft, and the tensioning wheel is connected to the second end of the tensioning shaft through a bearing. The tensioning shaft is threadedly connected to the buffering shaft. The second through hole is arranged as a threaded hole, and the positioning pin is arranged as a stud. The tensioning and buffering device comprises a bracket, a buffering shaft, a positioning pin, a buffering spring and a tensioning wheel; the bracket is provided with a first through hole, a first guide slot and a second guide slot, the first guide slot and the second guide slot are respectively arranged on the two sides of the first through hole and are in communication with the first through hole; the buffering shaft passes through the first through hole; the buffering shaft is provided with a second through hole, the positioning pin passes through the first guide slot, the second through hole and the second guide slot in sequence; the upper end of the first through hole is provided with a limiting structure, the buffering spring is sleeved on the buffering shaft and is arranged between the limiting structure and the positioning pin; the tensioning wheel

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