Automatic tensioning device for lower portion of plate chain elevator

Abstract

The utility model relates to the technical field of chain tensioning, and discloses a plate chain elevator lower portion automatic tensioning device which comprises a support, a driving assembly is arranged in the middle of the support, a protection box is fixedly connected to the top of the support, a plurality of gears are rotationally connected to the middle of the protection box, a chain is arranged in the protection box, and the gears are rotationally connected to the middle of the protection box. A plurality of gears are arranged on the chain, the gears are meshed with the chain, a tensioning wheel is arranged between two of the gears, the tensioning wheel is meshed with the chain, one side of the tensioning wheel is rotationally connected with a connecting block, and an adjusting assembly is arranged at the bottom of the connecting block. According to the utility model, under the mutual cooperation of the fixing block, the mounting plate, the insertion block, the pressing plate and other structures, the rapid installation of the housing can be realized, the effect of installing the device without using a tool is realized, and the problem that the device needs to be installed by using a specific tool is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of chain tensioning, in particular to an automatic tensioning device for the lower part of a plate chain hoist. Background Art

[0002] The plate chain hoist is a device used for vertical material transportation, usually in industrial production lines. It consists of a chain system that can transport materials from a low place to a high place. The automatic tensioning device can automatically adjust when the chain is loose to maintain the proper tension of the chain. This helps to improve the stability and reliability of the hoist, reduce maintenance work, and extend the service life of the equipment.

[0003] After searching, Chinese patent announcement number: CN216242092U discloses a chain relaxation and tensioning device, including a base plate, and also includes: a slider: the slider is slidably installed on the upper end surface of the base plate; a support plate: two support plates are fixedly installed on the upper end surface of one of the sliders; an adjusting mechanism: the adjusting mechanism includes a connecting shaft, the circumferential surfaces at both ends of the connecting shaft are sleeved with transmission wheels, and the circumferential surface of the middle section of the connecting shaft is sleeved with a telescopic rod, and the inner end of the telescopic rod is installed with a cylinder; a chain: the chain is transmission-connected to the transmission wheel; the utility model can realize the tensioning or relaxing function of the chain under the action of the adjusting mechanism, with a high degree of automation and no need for manual participation in the work, thereby effectively improving the safety of the device's operation, and having a good use effect. While further improving work efficiency, it can also reduce labor intensity, and is suitable for the use needs of the food industry and chemical industry under high temperature, low temperature and toxic environments.

[0004] Although the above technology can achieve the tension of the chain through an adjusting mechanism, there are still some shortcomings in the above technology. Since the adjusting mechanism in the above technology is fixed to one side of the device by bolts, specific tools are required to install the adjusting mechanism during the installation process. Therefore, the installation of the device will be restricted by the use of tools. The installers will spend a lot of time looking for specific tools, which makes the installation of the device very troublesome. For this reason, an automatic tensioning device for the lower part of a plate chain hoist is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an automatic tensioning device for the lower part of a plate chain hoist, aiming to improve the problem in the above technology that specific tools are needed to install the device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automatic tensioning device for the lower part of a plate chain hoist, comprising a bracket, a driving assembly is provided in the middle part of the bracket, a protective box is fixedly connected to the top of the bracket, a plurality of gears are rotatably connected to the middle part of the protective box, a chain is provided inside the protective box, and the plurality of gears are meshed with the chain, wherein a tensioning wheel is provided between two of the gears, the tensioning wheel and the chain are meshed with each other, a connecting block is rotatably connected to one side of the tensioning wheel, an adjusting assembly is provided at the bottom of the connecting block, a fixed block is fixedly connected to the bottom of the adjusting assembly, two pressure plates are slidably connected to the middle part of the fixed block, one end of the two pressure plates are fixedly connected to an insert block, and the two insert blocks are slidably connected to the middle part of the fixed block, a mounting plate is fixedly connected to the inside of the protective box, the fixed block is provided in the middle part of the mounting plate, and the insert block is slidably connected to the middle part of the mounting plate.

[0007] As a further description of the above technical solution:

[0008] The driving assembly includes a protective shell, which is fixedly connected to one side of the bracket, a motor is fixedly connected to the inside of the protective shell, a rotating rod is fixedly connected to the output end of the motor, one end of the rotating rod is fixedly connected to a pulley, one side of one of the gears is fixedly connected to a pulley, and the outer peripheries of the two pulleys are provided with synchronous belts.

[0009] As a further description of the above technical solution:

[0010] The adjustment assembly includes a pressure block, the top of the fixed block is fixedly connected to a shell, the pressure block is slidably connected to the inside of the shell, the inside of the shell is fixedly connected to a tension spring 1, and the other end of the tension spring 1 is fixedly connected to an end of the pressure block away from the connecting block.

[0011] As a further description of the above technical solution:

[0012] One side of the protection box is rotatably connected to a side plate, one side of the protection box is fixedly connected to a limiting block, one side of the side plate is fixedly connected to two support plates, a rotating shaft is rotatably connected between the two support plates, and a buckle assembly is provided on one side of the rotating shaft.

[0013] As a further description of the above technical solution:

[0014] The buckle assembly includes a second tension spring, the second tension spring is fixedly connected to one side of the rotating shaft, and the other end of the second tension spring is fixedly connected to a pulling plate.

[0015] As a further description of the above technical solution:

[0016] A telescopic rod is fixedly connected to one side of the rotating shaft, the other end of the telescopic rod is fixedly connected to one end of the pulling plate, and the second tension spring is sleeved on the outer periphery of the telescopic rod.

[0017] As a further description of the above technical solution:

[0018] A partition is fixedly connected to the middle of the fixed block, and springs are fixedly connected to both ends of the partition. The other ends of the two springs are respectively fixedly connected to one end of the two pressure plates away from the insertion block.

[0019] As a further description of the above technical solution:

[0020] The housing and the fixing block are not in contact with the gear and the chain.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, with the cooperation of the fixing block, the mounting plate, the plug block, the pressure plate and other structures, the housing can be quickly installed, and the device can be installed without using tools, thereby solving the problem of needing to use specific tools to install the device.

[0023] 2. In the utility model, with the cooperation of the limit block, pull plate, tension spring, rotating shaft and other structures, the side plate can be rotated to achieve the sealing and opening of the protection box, so that the protection box can be quickly opened and closed to solve the problem of troublesome opening and closing of the protection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional schematic diagram of an automatic tensioning device for the lower part of a plate chain hoist proposed by the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of a chain of an automatic tensioning device at the bottom of a plate chain hoist proposed by the utility model;

[0026] Figure 3 This is a structural schematic diagram of a fixing block of an automatic tensioning device at the bottom of a plate chain hoist proposed by the utility model;

[0027] Figure 4 The utility model is a schematic diagram of the structure of a limit block of the automatic tensioning device at the bottom of a plate chain hoist.

[0028] Legend:

[0029] 1. Bracket; 2. Protective shell; 3. Motor; 4. Protective box; 5. Side panel; 6. Rotating rod; 7. Pulley; 8. Synchronous belt; 9. Gear; 10. Chain; 11. Tensioner; 12. Casing; 13. Mounting plate; 14. Insert block; 15. Partition plate; 16. Pressure plate; 17. Tension spring 1; 18. Pressure block; 19. Fixed block; 20. Connecting block; 21. Support plate; 22. Rotating shaft; 23. Tension spring 2; 24. Telescopic rod; 25. Limit block; 26. Pull plate; 27. Spring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 3 The utility model provides an embodiment: an automatic tensioning device for the lower part of a plate chain hoist, comprising a bracket 1, a driving assembly is arranged in the middle of the bracket 1, a protective box 4 is fixedly connected to the top of the bracket 1, a plurality of gears 9 are rotatably connected to the middle of the protective box 4, a chain 10 is arranged inside the protective box 4, and the plurality of gears 9 are meshed with the chain 10, wherein a tensioning wheel 11 is arranged between two gears 9, the tensioning wheel 11 and the chain 10 are meshed with each other, a connecting block 20 is rotatably connected to one side of the tensioning wheel 11, an adjusting assembly is arranged at the bottom of the connecting block 20, and the bottom of the adjusting assembly A fixed block 19 is fixedly connected, and two pressure plates 16 are slidably connected to the middle of the fixed block 19. One end of the two pressure plates 16 is fixedly connected to an insertion block 14, and the two insertion blocks 14 are slidably connected to the middle of the fixed block 19. The inside of the protective box 4 is fixedly connected to a mounting plate 13, and the fixed block 19 is arranged in the middle of the mounting plate 13. The insertion block 14 is slidably connected to the middle of the mounting plate 13. A partition 15 is fixedly connected to the middle of the fixed block 19, and both ends of the partition 15 are fixedly connected to springs 27, and the other ends of the two springs 27 are respectively fixedly connected to one end of the two pressure plates 16 away from the insertion block 14.

[0032] Specifically, the gear 9 and the chain 10 are driven to rotate in the middle of the protective box 4 under the drive, so as to drive the hoist to work, and an adjustment component is set on the bottom plate of the connecting block 20, so that the tensioning wheel 11 can be automatically corrected according to the surface tension of the adjustment chain 10, and pressure is applied to one side of the two pressure plates 16 at the same time, so that the two pressure plates 16 move in opposite directions, and the pressure plates 16 will compress the spring 27 during the movement, and the insertion block 14 will be driven to move synchronously during the movement of the pressure plate 16, so that both the two insertion blocks 14 move to the middle of the fixed block 19, and then the fixed block 19 is placed in the middle of the mounting plate 13, and then the pressure on the pressure plate 16 is ended, and the spring 27 releases the elastic force to both sides, so that the two insertion blocks 14 move in opposite directions, so that the insertion block 14 moves to the middle of the mounting plate 13, so as to limit the fixed block 19, and achieve the effect of being able to install the device without tools.

[0033] Reference Figure 1 , Figure 2 and Figure 3 The driving component includes a protective shell 2, which is fixedly connected to one side of the bracket 1. A motor 3 is fixedly connected inside the protective shell 2. A rotating rod 6 is fixedly connected to the output end of the motor 3. A pulley 7 is fixedly connected to one end of the rotating rod 6. A pulley 7 is fixedly connected to one side of one gear 9. A synchronous belt 8 is sleeved on the outer periphery of the two pulleys 7. The adjusting component includes a pressing block 18. The top of the fixed block 19 is fixedly connected to the outer shell 12. The pressing block 18 is slidably connected to the inside of the outer shell 12. A tension spring 17 is fixedly connected to the inside of the outer shell 12. The other end of the tension spring 17 is fixedly connected to one end of the pressing block 18 away from the connecting block 20. The outer shell 12 and the fixed block 19 are not in contact with the gear 9 and the chain 10.

[0034] Specifically, the driving component drives the rotating rod 6 to rotate through the motor 3, so that the rotating rod 6 drives one of the pulleys 7 to rotate, and the other pulley 7 drives one of the gears 9 to rotate through the synchronous belt 8, and then drives the other gears 9 to rotate synchronously through the chain 10, so that the elevator can start working. Through the adjustment component, the state of the tension spring 17 can be changed according to the surface tension of the chain 10, so that the tension spring 17 can pull the tensioning wheel 11 downward, and at the same time, the tensioning wheel 11 can also stretch the tension spring 17 upward, so that the tensioning wheel 11 can realize automatic adjustment of the surface tension of the chain 10 according to the surface tension of the chain 10.

[0035] Reference Figure 1 and Figure 4One side of the protective box 4 is rotatably connected to a side plate 5, one side of the protective box 4 is fixedly connected to a limiting block 25, one side of the side plate 5 is fixedly connected to two support plates 21, a rotating shaft 22 is rotatably connected between the two support plates 21, one side of the rotating shaft 22 is provided with a snap assembly, the snap assembly includes a tension spring 23, the tension spring 23 is fixedly connected to one side of the rotating shaft 22, the other end of the tension spring 23 is fixedly connected to a pull plate 26, one side of the rotating shaft 22 is fixedly connected to a telescopic rod 24, the other end of the telescopic rod 24 is fixedly connected to one end of the pull plate 26, and the tension spring 23 is sleeved on the outer periphery of the telescopic rod 24.

[0036] Specifically, by pulling the pull plate 26, the pull plate 26 can extend the distance between the pull plate 26 and the rotating shaft 22 by stretching the tension spring 23, and after the pull plate 26 is stretched to a certain distance, the pull plate 26 is rotated with the rotating shaft 22 as the center to move the pull plate 26 to one side of the limit block 25, and then the pulling force on the pull plate 26 is ended, the tension spring 23 will contract and drive the pull plate 26 to move synchronously to reduce the distance between the rotating shaft 22 and the pull plate 26. In the process of the pull plate 26 driven by the tension spring 23 to move, the pull plate 26 will contact the limit block 25, and the limit block 25 will limit the pull plate 26 to achieve the fixation between the protective box 4 and the side panel 5, so as to achieve the effect of quickly closing the protective box 4 to solve the problem of the more troublesome closing of the protective box 4.

[0037] Working principle: By setting a tension spring 17 in the middle of the housing 12, the tension wheel 11 can be automatically adjusted according to the tension of the chain 10, by placing the fixing block 19 above the mounting plate 13, and then by pulling the two pressing plates 16, the two pressing plates 16 move in opposite directions, and the two insert blocks 14 are respectively driven to move to the middle of the fixing block 19 by the two pressing plates 16, and then the fixing block 19 is placed in the middle of the mounting plate 13, and then the pressing plate 16 is released, and the two insert blocks 14 will move in opposite directions, so that the insert blocks 14 move to the middle of the mounting plate 13, so that the fixing block 19 is fixed to the middle of the mounting plate 13. The fixed block 19 can be fixed in the middle of the mounting plate 13 to realize the quick installation of the outer shell 12, so as to solve the problem of needing to use specific tools to install the device. By pulling the pull plate 26 upward, the pull plate 26 can extend the distance between the pull plate 26 and the rotating shaft 22 by stretching the tension spring 23. After moving to a certain distance, the pull plate 26 can be rotated with the protective shell 2 as the origin to make the pull plate 26 disengage from the limit of the limit block 25. Then the side plate 5 can be rotated to perform maintenance on the gears 9 and the chain 10 inside the protective box 4, so as to solve the problem of the troublesome opening of the protective box 4.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic tensioning device for the lower part of a plate chain hoist, comprising a bracket (1), characterized in that: A driving assembly is provided in the middle of the bracket (1), a protective box (4) is fixedly connected to the top of the bracket (1), a plurality of gears (9) are rotatably connected to the middle of the protective box (4), a chain (10) is provided inside the protective box (4), the plurality of gears (9) are meshed with the chain (10), a tensioning wheel (11) is provided between two of the gears (9), the tensioning wheel (11) and the chain (10) are meshed with each other, one side of the tensioning wheel (11) is rotatably connected to a connecting block (20), the connecting block (20) is 0) is provided with an adjustment component at the bottom, a fixed block (19) is fixedly connected to the bottom of the adjustment component, two pressure plates (16) are slidably connected to the middle of the fixed block (19), one end of each of the two pressure plates (16) is fixedly connected to an insertion block (14), and both of the two insertion blocks (14) are slidably connected to the middle of the fixed block (19), and a mounting plate (13) is fixedly connected to the inside of the protective box (4), the fixed block (19) is arranged in the middle of the mounting plate (13), and the insertion block (14) is slidably connected to the middle of the mounting plate (13).

2. The automatic tensioning device for the lower part of a plate chain hoist according to claim 1, characterized in that: The driving assembly comprises a protective shell (2), the protective shell (2) being fixedly connected to one side of the bracket (1), a motor (3) being fixedly connected inside the protective shell (2), a rotating rod (6) being fixedly connected to the output end of the motor (3), one end of the rotating rod (6) being fixedly connected to a pulley (7), one side of one of the gears (9) being fixedly connected to a pulley (7), and the outer circumferences of the two pulleys (7) being sleeved with synchronous belts (8).

3. The automatic tensioning device for the lower part of a plate chain hoist according to claim 1 is characterized in that: The adjustment assembly comprises a pressure block (18), the top of the fixed block (19) is fixedly connected to the outer shell (12), the pressure block (18) is slidably connected to the inside of the outer shell (12), the inside of the outer shell (12) is fixedly connected to a tension spring (17), and the other end of the tension spring (17) is fixedly connected to one end of the pressure block (18) away from the connecting block (20).

4. The automatic tensioning device for the lower part of a plate chain hoist according to claim 1 is characterized in that: One side of the protection box (4) is rotatably connected to a side plate (5), one side of the protection box (4) is fixedly connected to a limiting block (25), one side of the side plate (5) is fixedly connected to two support plates (21), a rotating shaft (22) is rotatably connected between the two support plates (21), and a buckle assembly is provided on one side of the rotating shaft (22).

5. The automatic tensioning device for the lower part of a plate chain hoist according to claim 4 is characterized in that: The buckle assembly comprises a second tension spring (23), wherein the second tension spring (23) is fixedly connected to one side of the rotating shaft (22), and the other end of the second tension spring (23) is fixedly connected to a pulling plate (26).

6. The automatic tensioning device for the lower part of a plate chain hoist according to claim 5, characterized in that: A telescopic rod (24) is fixedly connected to one side of the rotating shaft (22), the other end of the telescopic rod (24) is fixedly connected to one end of the pulling plate (26), and the second tension spring (23) is sleeved on the outer periphery of the telescopic rod (24).

7. The automatic tensioning device for the lower part of a plate chain hoist according to claim 1, characterized in that: A partition (15) is fixedly connected to the middle of the fixed block (19), and springs (27) are fixedly connected to both ends of the partition (15), and the other ends of the two springs (27) are respectively fixedly connected to one end of the two pressure plates (16) away from the insertion block (14).

8. The automatic tensioning device for the lower part of a plate chain hoist according to claim 3 is characterized in that: The housing (12) and the fixing block (19) are not in contact with the gear (9) and the chain (10).

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