A chain fast tightening device for a confined small space

Abstract

The invention relates to a chain fast tightening device for a closed small space, belonging to the technical field of chain tightening tools; the device comprises a box body, a chain tightening adjustment mechanism is arranged inside the box body, the chain tightening adjustment mechanism comprises a lifting assembly and a chain tightening assembly, and the chain tightening assembly is driven to be lifted and lowered by the lifting assembly; the chain tightening assembly comprises a liquid storage box, a first mounting roller, and a second mounting roller which are sequentially distributed from bottom to top, wherein the second mounting roller is arranged above the first mounting roller by the lifting adjustment assembly, and the height of the second mounting roller is adjusted by the lifting adjustment assembly, and a clamping sprocket is respectively arranged on the first mounting roller and the second mounting roller; a lifting and lowering cleaning assembly is arranged between the first mounting roller and the second mounting roller; the problem that the current chain tightening operation process for a closed small space is complicated and inefficient is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of chain tightening tools, and in particular relates to a chain fast tightening device in a closed small space. Background Art

[0002] In automated production lines, chain tensioners are used to ensure stable chain operation, reduce downtime, improve production efficiency, keep the chain in a taut state, and reduce the drop in transmission efficiency caused by chain slack, thereby improving overall production efficiency.

[0003] When tightening a chain in a confined space, the free operating space is small and it is not convenient to insert tools for placement and observation. Therefore, it is necessary to remove nearby machine parts or dismantle the top plate and side plates of the equipment, which makes the process of tightening the chain more complicated, thereby reducing the maintenance efficiency of the tightening chain operation. In addition, the existing chain tightening device mostly adopts the adjustment setting of the screw rod sliding. The screw rod adjustment device is easy to loosen in the chain transmission with frequent vibration, which increases the maintenance frequency of the chain tightening, increases the total maintenance time, and reduces the maintenance efficiency of the chain tightening device. Summary of the invention

[0004] The invention overcomes the shortcomings of the prior art and provides a fast chain tightening device for a closed small space, thereby solving the problem that the current chain tightening operation for a closed small space is complicated and inefficient.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0006] A chain fast tightening device for a closed small space comprises a box body, a chain tightening adjustment mechanism is arranged inside the box body, the chain tightening adjustment mechanism comprises a lifting assembly and a chain tightening assembly, and the chain tightening assembly is driven to be lifted and lowered by the lifting assembly; the chain tightening assembly comprises a liquid storage box, a first mounting roller, and a second mounting roller which are sequentially distributed from bottom to top, wherein the second mounting roller is arranged above the first mounting roller by the lifting adjustment assembly, and the height of the second mounting roller is adjusted by the lifting adjustment assembly, and a clamping sprocket is respectively arranged on the first mounting roller and the second mounting roller; and a liftable cleaning assembly is arranged between the first mounting roller and the second mounting roller.

[0007] Furthermore, the box body is a square box structure with an opening at the upper end, and a removable top cover is provided at the upper opening of the box body; an adjustment window is provided on the top cover, and the tensioning chain adjustment mechanism is provided on the inner bottom surface of the box body below the adjustment window; a through opening is provided in the middle of the front end side wall of the box body, a driven component is provided on the outside of the through opening, and an active component is provided inside the box body.

[0008] Furthermore, the lifting assembly includes a first transmission box, a guide rod, a lifting threaded rod, a transmission threaded sleeve, a driving gear, a driven gear, and a first motor; the first transmission box is fixedly connected to the inner bottom surface of the box body through a support mounting plate; a lower mounting groove is provided at the center of the lower end surface of the first transmission box, and the first motor is fixedly provided inside the lower mounting groove; a vertical upper mounting groove is provided on the upper end surface of the first transmission box, and the lower end of the upper mounting groove is connected to the lower mounting groove; a transmission threaded sleeve is rotatably provided inside the upper mounting groove, and an internal thread is provided on the inner wall of the transmission threaded sleeve; the lower end of the transmission threaded sleeve extends into the lower mounting groove, and a driven gear is fixedly sleeved on the outer side of the lower end of the transmission threaded sleeve; a driving gear is fixedly provided on the output shaft of the first motor, and the driving gear is meshed with the driven gear.

[0009] Furthermore, a vertical lifting threaded rod is threadedly connected inside the transmission threaded sleeve, and the upper end of the lifting threaded rod is fixedly connected to the center of the lower end surface of the liquid storage box; a guide hole is respectively provided at the four corners of the upper end surface of the first transmission box, and a vertical guide rod is respectively fixedly provided at the four corners of the lower end surface of the liquid storage box, and the lower ends of the four guide rods are respectively slidably inserted into the four guide holes at the upper end of the first transmission box.

[0010] Furthermore, the tightening chain assembly also includes a support frame and a sliding block; a vertical support frame is fixedly arranged on the left and right sides of the upper end surface of the liquid storage box, and a vertical sliding groove is respectively arranged on the end surface of the two support frames close to each other; the axes of the first mounting roller and the second mounting roller are horizontally arranged along the left and right directions, and the left and right ends of the first mounting roller are respectively fixedly connected to the lower ends of the end surfaces of the two support frames close to each other; a sliding block is fixedly arranged on the left and right ends of the second mounting roller, and the two sliding blocks are respectively slidably engaged in the sliding grooves of the two support frames.

[0011] Furthermore, the lifting and adjusting assembly includes a lifting and adjusting block, a first threaded sleeve, a transmission screw, and a second transmission box; a lifting and adjusting block is fixedly arranged on the outer side of the right end of the second mounting roller, and a vertical threaded sleeve is fixedly inserted at the front and rear ends of the lifting and adjusting block respectively, and an internal thread is arranged on the inner wall of the first threaded sleeve; a vertical transmission screw is screwed in each first threaded sleeve respectively, and the lower ends of the two transmission screws are rotatably connected to the upper end surface of the liquid storage box; a second transmission box is fixedly arranged on the upper end of the support frame on the right side, and the second transmission box is located above the lifting and adjusting block, and the upper ends of the two transmission screws are rotatably inserted in the second transmission box.

[0012] Furthermore, a first transmission assembly is provided inside the second transmission box, and the two transmission screws are driven to rotate by the first transmission assembly; the first transmission assembly includes an adjusting rotating rod, a first transmission shaft, an active bevel gear, a driven bevel gear, a first worm wheel, and a first worm; a first worm wheel is fixedly provided at the upper end of each transmission screw; a first transmission shaft is rotatably provided inside the second transmission box, and two first worm wheels are fixedly provided on the first transmission shaft, and the two first worm wheels are respectively meshed with the two first worm wheels; a vertical adjusting rotating rod is rotatably provided on the top plate of the second transmission box; a driving bevel gear is fixedly provided at the lower end of the adjusting rotating rod, and a driven bevel gear is fixedly provided at one end of the first transmission shaft, and the driving bevel gear is meshed with the driven bevel gear.

[0013] Furthermore, a front-to-back bypass groove is provided in the middle of the upper end surface of the liquid storage box, and a square liquid outlet window is provided at the center of the bottom surface of the bypass groove, and a rubber pad is fixedly provided inside the liquid outlet window, and the rubber pad includes an arc segment and vertical segments on both sides, and the liquid outlet window is closed by the arc segment and the vertical segment; a lever is fixedly provided in the middle of the arc segment of the rubber pad, and upper and lower rows of connecting holes are respectively provided on the vertical segments at both ends of the lever; two vertical baffles are fixedly provided on the top surface of the interior of the liquid storage box, and the two baffles are respectively located on the inner side surfaces of the two vertical segments of the rubber pad; upper and lower rows of connecting holes are respectively provided on each baffle, and the connecting holes on the baffle and the connecting holes on the rubber pad are staggered; a liquid injection joint is provided at the upper end of the side wall of the liquid storage box; and adsorption cotton is provided on the vertical segments at both ends of the lever.

[0014] Furthermore, the cleaning component includes a sliding box, a double-sided cleaning brush, a distance detection sensor, and a second transmission component; the same sliding box is sleeved on the outer side of the two transmission screws, and a horizontal double-sided cleaning brush is fixedly installed on the outer wall of the sliding box, and the double-sided cleaning brush is located between the upper and lower clamping sprockets; bristles are provided at the upper and lower ends of the double-sided cleaning brush, and distance detection sensors are provided at the upper and lower ends of the double-sided cleaning brush.

[0015] Furthermore, the second transmission assembly is provided inside the sliding box, and the sliding box is driven to rise and fall on the transmission screw through the second transmission assembly; the second transmission assembly includes a second transmission shaft, a second worm, a second worm wheel, a second threaded sleeve, and a second motor; a second transmission shaft is rotatably provided inside the sliding box, and two second worms are fixedly provided on the second transmission shaft; a second motor is fixedly provided inside the sliding box, and an output shaft of the second motor is fixedly connected to one end of the second transmission shaft; two vertical second threaded sleeves are rotatably provided inside the sliding box, and the two second threaded sleeves are respectively screwed on the outer sides of the two transmission screws; a second worm wheel is fixedly sleeved on the outer walls of the two second threaded sleeves, and the two second worm wheels are respectively meshed with the two second worms.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: In the present invention, the cleaning and lubrication cooperation of the rubber pad and the double-sided cleaning brush facilitates the removal of dirt attached to the chain and maintains the lubrication of the chain, thereby increasing the service life of the chain and realizing the function of cleaning and lubricating the chain; the self-locking transmission cooperation of the first transmission assembly and the second transmission assembly facilitates more stable adjustment of the device, thereby improving the stability of the chain tightening device and realizing the function of high stability and vibration prevention of the chain tightening; the chain tightening adjustment cooperation of the adjusting rotating rod and the second mounting roller facilitates the adjustment of the chain tightening device in a smaller adjustment window, thereby realizing the chain tightening operation function in a confined small space, and finally solving the problem of cumbersome chain tightening inside a confined small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the box; Figure 3 This is a schematic diagram of the structure of the tight chain adjustment mechanism Figure 1 ; Figure 4 This is a schematic diagram of the structure of the tight chain adjustment mechanism Figure 2 ; Figure 5 It is a schematic diagram of the structure of the tight chain assembly; Figure 6 This is the structural diagram of the tight chain adjustment mechanism Figure 3 ; Figure 7 yes Figure 6 A local enlarged schematic diagram of the middle A; Figure 8 This is a schematic diagram of the internal structure of the liquid storage box. Figure 1 ; Fig. 9 This is a schematic diagram of the internal structure of the liquid storage box. Figure 2 ; Fig.10 is a schematic diagram of the connection between the lifting and lowering adjustment assembly and the second mounting roller; Fig.11 is a schematic diagram of the structure of the cleaning component; Fig.12 It is a schematic diagram of the internal structure of the slip box; Among them, 1 is a box body, 2 is a top cover, 3 is an adjustment window, 4 is a driven component, 5 is an active component, 6 is a chain tightening adjustment mechanism, 7 is a support mounting plate, 8 is a first transmission box, 9 is a guide rod, 10 is a lifting threaded rod, 11 is a transmission threaded sleeve, 12 is a liquid storage box, 13 is a driven gear, 14 is a first motor, 15 is a support frame, 16 is a first installation roller, 17 is a sliding block, 18 is a transmission screw rod, 19 is a sliding box, 20 is a second transmission box, 21 is a lever, 2 2 is a connecting hole, 23 is a rubber pad, 24 is a baffle, 25 is a liquid injection joint, 26 is a connecting hole, 27 is a second mounting roller, 28 is a lifting adjustment block, 29 is a first threaded sleeve, 30 is an adjusting rotating rod, 31 is a driven bevel gear, 32 is a first worm gear, 33 is a first worm, 34 is a fixed sleeve, 35 is a locking bolt, 36 is a double-sided cleaning brush, 37 is a distance detection sensor, 38 is a second threaded sleeve, 39 is a second worm gear, 40 is a second worm, and 41 is a second motor. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0019] like Figure 1 As shown in FIG. 12 , the present invention provides a chain fast tightening device for a closed small space, comprising a box body 1, wherein a chain tightening adjusting mechanism 6 is arranged inside the box body 1, wherein the chain tightening adjusting mechanism 6 comprises a lifting assembly and a chain tightening assembly, and the chain tightening assembly is driven to lift and lower by the lifting assembly; the chain tightening assembly comprises a liquid storage box 12, a first mounting roller 16, and a second mounting roller 27 which are sequentially distributed from bottom to top, wherein the second mounting roller 27 is arranged above the first mounting roller 16 by the lifting adjusting assembly, and the height of the second mounting roller 27 is adjusted by the lifting adjusting assembly, and a clamping sprocket is respectively arranged on the first mounting roller 16 and the second mounting roller 27; and a liftable cleaning assembly is arranged between the first mounting roller 16 and the second mounting roller 27.

[0020] The box body 1 is a square box structure with an upper opening, and a detachable top cover 2 is provided at the upper opening of the box body 1. An adjustment window 3 is provided on the top cover 2, and the chain tightening adjustment mechanism 6 is provided on the inner bottom surface of the box body 1 below the adjustment window 3. The length direction of the box body 1 is arranged along the front-to-back direction, and a through hole is provided in the middle of the front end side wall of the box body 1, and a driven component 4 is provided outside the through hole, and an active component 5 is provided inside the box body 1.

[0021] The active component 5 includes a driving motor, a reducer, and a driving sprocket. The driving motor is fixedly arranged at the inner bottom surface of the box body 1, the reducer is arranged at the output shaft of the driving motor, and the driving sprocket is fixedly arranged at the output shaft of the reducer. The rotation axis of the driving sprocket is horizontally arranged along the left and right directions.

[0022] The driven assembly 4 includes a driven shaft, an articulated seat, and a driven gear 13. Two left-right symmetrical articulated seats are fixedly arranged on the front outer wall of the box body 1, a driven shaft is rotatably arranged between the left and right articulated seats, a driven sprocket is fixedly sleeved in the middle of the driven shaft, and the driven sprocket is located outside the through opening. The driven sprocket is located in front of the driving sprocket, and the chain tightening adjustment mechanism 6 is arranged between the driving sprocket and the driven sprocket.

[0023] The lifting assembly includes a first transmission box 8 , a guide rod 9 , a lifting threaded rod 10 , a transmission threaded sleeve 11 , a driving gear, a driven gear 13 , and a first motor 14 .

[0024] The first transmission box 8 is a square box structure. A horizontal support and mounting plate 7 is fixedly arranged on the lower end surface of the first transmission box 8. The support and mounting plate 7 is fixedly connected to the inner bottom surface of the box body 1 through the fixing bolts on its four corners. A lower side mounting groove is arranged at the center of the lower end surface of the first transmission box 8, and a first motor 14 is fixedly arranged inside the lower side mounting groove. A vertical upper side mounting groove is arranged on the upper end surface of the first transmission box 8, and the lower end of the upper side mounting groove is connected with the lower side mounting groove. A transmission threaded sleeve 11 is rotatably arranged inside the upper side mounting groove, and an internal thread is arranged on the inner wall of the transmission threaded sleeve 11; the lower end of the transmission threaded sleeve 11 extends into the lower side mounting groove, and a driven gear 13 is fixedly sleeved on the outer side of the lower end of the transmission threaded sleeve 11. A driving gear is fixedly arranged on the output shaft of the first motor 14, and the driving gear is meshed with the driven gear 13.

[0025] A vertical lifting threaded rod 10 is screwed inside the transmission threaded sleeve 11, and the upper end of the lifting threaded rod 10 is fixedly connected to the center of the lower end surface of the liquid storage box 12. A guide hole is respectively provided at the four corners of the upper end surface of the first transmission box 8, and a vertical guide rod 9 is fixedly provided at the four corners of the lower end surface of the liquid storage box 12, and the lower ends of the four guide rods 9 are respectively slidably inserted into the four guide holes at the upper end of the first transmission box 8.

[0026] The chain tightening assembly further includes a support frame 15 and a sliding block 17 .

[0027] The liquid storage box 12 is a horizontally arranged square box-shaped structure, and a vertical support frame 15 is fixedly arranged on the left and right sides of the upper end surface of the liquid storage box 12, and a vertical sliding groove is respectively arranged on the end surfaces of the two support frames 15 that are close to each other. The axes of the first installation roller 16 and the second installation roller 27 are both arranged horizontally along the left and right directions, and the left and right ends of the first installation roller 16 are respectively fixedly connected to the lower ends of the end surfaces of the two support frames 15 that are close to each other. A sliding block 17 is fixedly arranged on the left and right ends of the second installation roller 27, and the two sliding blocks 17 are respectively slidably engaged in the sliding grooves of the two support frames 15, and the second installation roller 27 is driven to slide along the vertical direction by the two sliding blocks 17.

[0028] A pressing sprocket is rotatably arranged on the outer side of the middle part of the first installation roller 16 and the second installation roller 27 respectively.

[0029] The lifting and lowering adjustment assembly includes a lifting and lowering adjustment block 28 , a first threaded sleeve 29 , a transmission screw 18 , and a second transmission box 20 .

[0030] A lifting and lowering adjustment block 28 is fixedly arranged on the right outer side of the second mounting roller 27, and a vertical threaded sleeve is fixedly inserted at the front and rear ends of the lifting and lowering adjustment block 28, and an internal thread is arranged on the inner wall of the first threaded sleeve 29. A vertical transmission screw 18 is screwed inside each first threaded sleeve 29, and the lower ends of the two transmission screws 18 are rotatably connected to the upper end surface of the liquid storage box 12. A second transmission box 20 is fixedly arranged on the upper end of the right support frame 15, and the second transmission box 20 is located above the lifting and lowering adjustment block 28, and the upper ends of the two transmission screws 18 are rotatably inserted inside the second transmission box 20.

[0031] A first transmission assembly is arranged inside the second transmission box 20, and the two transmission screws 18 are driven to rotate through the first transmission assembly. The first transmission assembly includes an adjusting rotating rod 30, a first transmission shaft, an active bevel gear, a driven bevel gear 31, a first worm gear 32, and a first worm 33. A first worm gear 32 is fixedly arranged at the upper end of each transmission screw 18. A first transmission shaft is rotatably arranged inside the second transmission box 20, and two first worm gears 33 are fixedly arranged on the first transmission shaft, and the two first worm gears 33 are respectively meshed with the two first worm gears 32. A vertical adjusting rotating rod 30 is rotatably arranged on the top plate of the second transmission box 20, and an inner hexagonal adjustment groove is arranged at the upper end of the adjusting rotating rod 30, and the adjustment groove is located below the adjustment window 3. An active bevel gear is fixedly arranged at the lower end of the adjusting rotating rod 30, and a driven bevel gear 31 is fixedly arranged at one end of the first transmission shaft, and the active bevel gear is meshed with the driven bevel gear 31.

[0032] The lifting and lowering adjustment block 28 includes two symmetrical clamping plates, the clamping plates include a circular arc section in the middle and a flat section on both sides. The flat sections on both sides of the two clamping plates are attached to each other and fixedly connected, and the circular arc sections of the two clamping plates form a complete cylindrical structure. The circular arc sections of the two clamping plates are respectively sleeved on the upper and lower sides of the right end of the second installation roller 27. The same first threaded sleeve 29 is respectively inserted into the inside of a pair of flat sections of the two clamping plates that are attached to each other. The lower end of the outer side surface of the first threaded sleeve 29 is set as a square column structure, and a rectangular groove is set on the flat section of the clamping plate on the lower side. The square column structure at the lower end of the first threaded sleeve 29 is inserted into the rectangular groove of the flat section of the clamping plate on the lower side. A fixed sleeve plate 34 is fixedly set on the outer side of the upper end of the first threaded sleeve 29, and the fixed sleeve plate 34 is fixedly connected to the upper end surface of the flat section of the clamping plate on the upper side through a locking bolt 35.

[0033] A front-to-back escape groove is provided in the middle of the upper end surface of the liquid storage box 12, and a square liquid outlet window is provided at the center of the bottom surface of the escape groove. A rubber pad 23 is fixedly provided inside the liquid outlet window. The rubber pad 23 includes a circular arc segment and vertical segments on both sides, and the liquid outlet window is closed by the circular arc segment and the vertical segment. A lever 21 is fixedly provided in the middle of the circular arc segment of the rubber pad 23, and two upper and lower rows of connecting holes 22 are respectively provided on the vertical segments at both ends of the lever 21. Two vertical baffles 24 are fixedly provided on the top surface of the liquid storage box 12, and the two baffles 24 are respectively located on the inner side surfaces of the two vertical segments of the rubber pad 23. Two upper and lower rows of connecting holes 26 are respectively provided on each baffle 24, and the connecting holes 26 on the baffle 24 are staggered with the connecting holes 22 on the rubber pad 23. A liquid injection joint 25 is provided at the upper end of the side wall of the liquid storage box 12, and lubricating oil is injected into the liquid storage box 12 through the liquid injection joint 25. Adsorption cotton is arranged on the vertical sections at both ends of the lever 21. The surface of the baffle 24 is made of a rough adsorption material.

[0034] By setting the rubber pad 23 and the baffle 24, the lever 21 can be intermittently touched when the chain rotates, so that the rubber pad 23 is deformed and deflected. The deflected rubber pad 23 drives the connecting hole 22 on the rubber plate to deflect, so as to align with the connecting hole 26 on the baffle 24, so that the lubricating oil in the liquid storage box 12 flows into the adsorbent cotton through the rough adsorbent material on the outer layer of the baffle 24, so that the rotating chain is attached with the lubricating oil, and the transmission of the lubricating oil can be stopped when the chain is not rotating to reduce the loss of the lubricating oil.

[0035] The cleaning assembly includes a sliding box 19 , a double-sided cleaning brush 36 , a distance detection sensor 37 , a second threaded sleeve 38 , a second worm gear 39 , a second worm 40 , and a second motor 41 .

[0036] The same sliding box 19 is sleeved on the outer side of the two transmission screw rods 18, and a horizontal double-sided cleaning brush 36 is fixedly arranged on the outer wall of the sliding box 19, and the double-sided cleaning brush 36 is located between the upper and lower clamping sprockets; bristles are arranged at the upper and lower ends of the double-sided cleaning brush 36, and distance detection sensors 37 are arranged at the upper and lower ends of the double-sided cleaning brush 36.

[0037] A second transmission assembly is disposed inside the sliding box 19, and the sliding box 19 is driven to rise and fall on the transmission screw 18 by the second transmission assembly. The second transmission assembly includes a second transmission shaft, a second worm 40, a second worm wheel 39, a second threaded sleeve 38, and a second motor 41.

[0038] A second transmission shaft is rotatably arranged inside the sliding box 19, and two second worms 40 are fixedly arranged on the second transmission shaft. A second motor 41 is fixedly arranged inside the sliding box 19, and the output shaft of the second motor 41 is fixedly connected to one end of the second transmission shaft, and the second transmission shaft is driven to rotate by the second motor 41. Two vertical second threaded sleeves 38 are rotatably arranged inside the sliding box 19, and the two second threaded sleeves 38 are respectively screwed to the outside of the two transmission screws 18. A second worm wheel 39 is fixedly sleeved on the outer wall of the two second threaded sleeves 38, and the two second worm wheels 39 are respectively meshed with the two second worms 40.

[0039] The model of the distance detection sensor 37 is TCRT5000. The TCRT5000 infrared sensor can use the reflection principle to measure the gap between the chain and the distance detection sensor 37, thereby providing a safety warning for the sliding of the sliding box 19. When the distance reaches the set value, it sends an electrical signal to the control box that controls the second motor 41, so that the second motor 41 stops running. And it can send an alarm under the control of the device when the detection data of the distance detection sensor 37 does not change. At this time, the bristles of the double-sided cleaning brush 36 are bent and deflected due to long-term work, and the cleaning efficiency is reduced. The double-sided cleaning brush 36 needs to be replaced or inspected and repaired. By setting the double-sided cleaning brush 36 on the side end of the sliding box 19, the chain can be cleaned when the chain passes.

[0040] The present invention also proposes a method for using a chain fast tightening device in a closed small space, comprising the following steps: Step one, first, open the top cover 2, then fix the chain tightening adjustment mechanism 6 on the inner bottom surface of the box body 1 through the support mounting plate 7, then install the chain between the driven component 4 and the active component 5, and fix the sliding box 19 on the transmission screw 18, so that the double-sided cleaning brush 36 on the side end of the sliding box 19 is located between the upper chain and the lower chain, then install the second mounting roller 27 between the two support frames 15, and then install the sliding block 17 on both sides of the second mounting roller 27 by bolts, so that the sliding block 17 is slidably connected to the support frame 15, and the installed chain is fixed between the first mounting roller 16 and the second mounting roller 27 through the clamping sprocket on the first mounting roller 16 and the second mounting roller 27, and then the motor and electronic components of the device are powered on.

[0041] Step 2, then start the first motor 14, and the operation of the first motor 14 drives the driven gear 13 to rotate with the driving gear, so that the transmission threaded sleeve 11 drives the lifting threaded rod 10 to lift, thereby lifting the chain tightening assembly, adjusting the height of the chain tightening assembly, and making the compression sprocket installed on the first installation roller 16 tighten the lower chain, thereby completing the chain tightening adjustment of the lower chain. Then, the adjusting rotating rod 30 is rotated by a hexagonal wrench, and the rotating adjusting rotating rod 30 drives the first transmission assembly through the meshing transmission of the driving bevel gear and the driven bevel gear 31, so that the transmission screw 18 rotates. The setting of the first transmission assembly can drive the rotation of the first worm wheel 32 through the rotation of the first worm 33, so that the transmission screw 18 rotates with the first worm wheel 32, and the self-locking effect of the worm wheel is used to prevent the transmission screw 18 from vibrating and deflecting, so that the chain tightening device affects the rotation of the chain.

[0042] Step three, the transmission screw 18 then rotates to drive the second mounting roller 27 to slide up and down. The second mounting roller 27 can control the sliding of the second mounting roller 27 on the transmission screw 18 through the setting of the lifting and adjusting component, so that the second mounting roller 27 can slide downward so that the clamping sprocket on the second mounting roller 27 presses the upper chain, thereby completing the tightening adjustment of the upper chain. The setting of the first threaded sleeve 29, the fixed sleeve plate 34 and the locking bolt 35 can make the lifting and adjusting block 28 press and fix on the second mounting roller 27. At this point, the tightening installation of the chain rapid tightening device is completed.

[0043] Step four, when the chain finally rotates, it will intermittently touch the lever 21, causing the rubber pad 23 to deform and deflect. The deflected rubber pad 23 drives the connecting hole 22 on the rubber plate to deflect, thereby aligning with the connecting hole 26 on the baffle 24, so that the lubricating oil in the liquid storage box 12 flows through the rough adsorption material on the outer layer of the baffle 24 to the adsorption cotton, so that the rotating chain is attached with the lubricating oil, and the transmission of the lubricating oil can be stopped when the chain is not rotating to reduce the loss of the lubricating oil.

[0044] Step 5: The double-sided cleaning brush 36 can slide on the transmission screw 18 through the drive of the second transmission assembly, so that the chain can be cleaned when the chain passes through, and the distance detection sensor 37 can be used to prevent the sliding box 19 from colliding when sliding. The setting of the adjustment window 3 can save the time of disassembling and installing the top cover 2, and the hexagonal wrench can be directly inserted to adjust the chain tightening device, thereby reducing the maintenance time and improving the efficiency of machine maintenance. At this point, the use of the device is completed.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A chain fast tightening device in a confined small space, characterized in that: The invention comprises a box body (1), wherein a chain tightening adjustment mechanism (6) is arranged inside the box body (1), wherein the chain tightening adjustment mechanism (6) comprises a lifting assembly and a chain tightening assembly, wherein the chain tightening assembly is driven to be lifted and lowered by the lifting assembly; the chain tightening assembly comprises a liquid storage box (12), a first mounting roller (16), and a second mounting roller (27) which are sequentially arranged from bottom to top, wherein the second mounting roller (27) is arranged above the first mounting roller (16) by the lifting adjustment assembly, and the height of the second mounting roller (27) is adjusted by the lifting adjustment assembly, and a clamping sprocket is respectively arranged on the first mounting roller (16) and the second mounting roller (27); and a lifting and lowering cleaning assembly is arranged between the first mounting roller (16) and the second mounting roller (27).

2. A chain fast tightening device for a confined small space according to claim 1, characterized in that: The box body (1) is a square box structure with an opening at the top, and a detachable top cover (2) is arranged at the top opening of the box body (1); an adjustment window (3) is arranged on the top cover (2), and the chain tightening adjustment mechanism (6) is arranged on the bottom surface of the box body (1) below the adjustment window (3); a through opening is arranged in the middle of the front end side wall of the box body (1), a driven component (4) is arranged outside the through opening, and an active component (5) is arranged inside the box body (1).

3. The chain fast tightening device in a closed small space according to claim 1, characterized in that: The lifting assembly comprises a first transmission box (8), a guide rod (9), a lifting threaded rod (10), a transmission threaded sleeve (11), a driving gear, a driven gear (13), and a first motor (14); the first transmission box (8) is fixedly connected to the inner bottom surface of the box body (1) through a supporting mounting plate (7); a lower side mounting groove is provided at the center of the lower end surface of the first transmission box (8), and the first motor (14) is fixedly arranged inside the lower side mounting groove; a vertical upper side mounting groove is provided on the upper end surface of the first transmission box (8), and the lower end of the upper side mounting groove is connected to the lower side mounting groove; a transmission threaded sleeve (11) is rotatably arranged inside the upper side mounting groove, and the inner wall of the transmission threaded sleeve (11) is provided with an internal thread; the lower end of the transmission threaded sleeve (11) extends into the lower side mounting groove, and the driven gear (13) is fixedly sleeved on the outer side of the lower end of the transmission threaded sleeve (11); a driving gear is fixedly arranged on the output shaft of the first motor (14), and the driving gear is meshed with the driven gear (13).

4. The chain fast tightening device in a closed small space according to claim 3, characterized in that: A vertical lifting threaded rod (10) is threadedly connected inside the transmission threaded sleeve (11), and the upper end of the lifting threaded rod (10) is fixedly connected to the center of the lower end surface of the liquid storage box (12); a guide hole is respectively provided at the four corners of the upper end surface of the first transmission box (8), and a vertical guide rod (9) is respectively fixedly provided at the four corners of the lower end surface of the liquid storage box (12), and the lower ends of the four guide rods (9) are respectively slidably inserted into the four guide holes at the upper end of the first transmission box (8).

5. The chain fast tightening device in a closed small space according to claim 1, characterized in that: The tightening chain assembly also includes a support frame (15) and a sliding block (17); a vertical support frame (15) is fixedly arranged on the left and right sides of the upper end surface of the liquid storage box (12), and a vertical sliding groove is respectively arranged on the end surfaces of the two support frames (15) close to each other; the axes of the first mounting roller (16) and the second mounting roller (27) are both arranged horizontally along the left and right directions, and the left and right ends of the first mounting roller (16) are respectively fixedly connected to the lower ends of the end surfaces of the two support frames (15) close to each other; a sliding block (17) is fixedly arranged on the left and right ends of the second mounting roller (27), and the two sliding blocks (17) are respectively slidably engaged in the sliding grooves of the two support frames (15).

6. The chain fast tightening device in a closed small space according to claim 5, characterized in that: The lifting and lowering adjustment assembly comprises a lifting and lowering adjustment block (28), a first threaded sleeve (29), a transmission screw (18), and a second transmission box (20); a lifting and lowering adjustment block (28) is fixedly arranged on the outer side of the right end of the second mounting roller (27); a vertical threaded sleeve is fixedly inserted at the front and rear ends of the lifting and lowering adjustment block (28); an inner thread is arranged on the inner wall of the first threaded sleeve (29); a vertical transmission screw (18) is screwed inside each first threaded sleeve (29); the lower ends of the two transmission screws (18) are rotatably connected to the upper end surface of the liquid storage box (12); a second transmission box (20) is fixedly arranged on the upper end of the right support frame (15); the second transmission box (20) is located above the lifting and lowering adjustment block (28); the upper ends of the two transmission screws (18) are rotatably inserted inside the second transmission box (20).

7. A chain fast tightening device in a closed small space according to claim 6, characterized in that: A first transmission assembly is arranged inside the second transmission box (20), and the two transmission screws (18) are driven to rotate by the first transmission assembly; the first transmission assembly comprises an adjusting rotating rod (30), a first transmission shaft, a driving bevel gear, a driven bevel gear (31), a first worm wheel (32), and a first worm (33); a first worm wheel (32) is fixedly arranged at the upper end of each transmission screw (18); a first transmission shaft is rotatably arranged inside the second transmission box (20), and two first worm wheels (33) are fixedly arranged on the first transmission shaft, and the two first worm wheels (33) are respectively meshed with the two first worm wheels (32); a vertical adjusting rotating rod (30) is rotatably arranged on the top plate of the second transmission box (20); a driving bevel gear is fixedly arranged at the lower end of the adjusting rotating rod (30), and a driven bevel gear (31) is fixedly arranged at one end of the first transmission shaft, and the driving bevel gear is meshed with the driven bevel gear (31).

8. The chain fast tightening device in a closed small space according to claim 1, characterized in that: A front-to-back through-entry avoidance groove is provided in the middle of the upper end surface of the liquid storage box (12); a square liquid outlet window is provided at the center of the bottom surface of the avoidance groove; a rubber pad (23) is fixedly provided inside the liquid outlet window; the rubber pad (23) comprises an arc segment and vertical segments on both sides; the liquid outlet window is closed by the arc segment and the vertical segments; a lever (21) is fixedly provided in the middle of the arc segment of the rubber pad (23); upper and lower rows of connecting holes (22) are respectively provided on the vertical segments at both ends of the lever (21); Two vertical baffles (24) are fixedly arranged on the top surface of the liquid storage box (12), and the two baffles (24) are respectively located on the inner side surfaces of the two vertical sections of the rubber pad (23); two upper and lower rows of connecting holes (26) are respectively arranged on each baffle (24), and the connecting holes (26) on the baffle (24) and the connecting holes (22) on the rubber pad (23) are arranged in a staggered manner; a liquid injection joint (25) is arranged at the upper end of the side wall of the liquid storage box (12); and adsorption cotton is arranged on the vertical sections at both ends of the lever (21).

9. The chain fast tightening device in a closed small space according to claim 6, characterized in that: The cleaning assembly comprises a sliding box (19), a double-sided cleaning brush (36), a distance detection sensor (37), and a second transmission assembly; the same sliding box (19) is sleeved on the outer sides of the two transmission screw rods (18); a horizontal double-sided cleaning brush (36) is fixedly arranged on the outer wall of the sliding box (19); the double-sided cleaning brush (36) is located between the upper and lower clamping sprockets; bristles are arranged at the upper and lower ends of the double-sided cleaning brush (36), and distance detection sensors (37) are arranged at the upper and lower ends of the double-sided cleaning brush (36).

10. A chain fast tightening device in a closed small space according to claim 9, characterized in that: The second transmission assembly is arranged inside the sliding box (19), and the sliding box (19) is driven to be lifted and lowered on the transmission screw (18) by the second transmission assembly; the second transmission assembly comprises a second transmission shaft, a second worm (40), a second worm wheel (39), a second threaded sleeve (38), and a second motor (41); a second transmission shaft is rotatably arranged inside the sliding box (19), and two second worms (40) are fixedly arranged on the second transmission shaft; a second motor (41) is fixedly arranged inside the sliding box (19), and an output shaft of the second motor (41) is fixedly connected to one end of the second transmission shaft; two vertical second threaded sleeves (38) are rotatably arranged inside the sliding box (19), and the two second threaded sleeves (38) are respectively screwed to the outside of the two transmission screws (18); a second worm wheel (39) is fixedly sleeved on the outer wall of each of the two second threaded sleeves (38), and the two second worm wheels (39) are respectively meshed with the two second worms (40).

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