Unit press-fitting device for heavy-load escalator chain

Abstract

The unit press-fitting device comprises a press-fitting box, a press-fitting device is arranged on the press-fitting box, a press-fitting plate is arranged on the press-fitting box, mounting grooves in one-to-one correspondence with a plurality of chain grooves are formed in the press-fitting plate, and a cleaning plate is slidably connected into the press-fitting box. The cleaning plate is provided with connecting shafts in one-to-one correspondence with the multiple mounting grooves, the outer surfaces of the connecting shafts are provided with multiple brushes, when the connecting shafts are inserted into the chain grooves, the brushes abut against the inner side walls of the chain grooves, the cleaning plate is provided with a rotating assembly for driving the multiple connecting shafts to rotate synchronously, and the pressing box is provided with a moving assembly for driving the cleaning plate to move. The moving assembly can drive the connecting shaft to be inserted into the chain groove, the rotating assembly drives the connecting shaft to rotate synchronously, the connecting shaft rotates to enable the brush to rotate, and impurities adhering to the interior of the chain groove are removed through the rotating acting force of the brush. The press-fitting device has the effect of improving the press-fitting effect between the chain plate and the pin shaft.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of chain pressing, in particular to a unit pressing device for heavy-duty escalator chains. BACKGROUND

[0002] Heavy-duty escalator chains are used in escalator equipment for heavy goods transportation, and transmit power for the operation of heavy-duty escalators. The heavy-duty escalator chain is generally a metal chain ring or a ring-shaped object used for mechanical transmission and traction. The heavy-duty escalator chain is composed of a plurality of chain plates connected by a pin shaft. The pin shaft and the chain plate are generally pressed together by a pressing device.

[0003] A chain production pressing device is disclosed in Chinese Patent No. CN220427435U. The device includes a workbench and a moving plate. The upper surface of the workbench is symmetrically provided with pressing grooves. The two sides of the pressing grooves are symmetrically provided with lifting grooves. The lifting grooves are movably connected with lifting lead screws. The lower end of the lifting lead screw is connected with a transmission assembly through a bevel gear. The transmission assembly is movably connected with the workbench through a bearing. The transmission assembly is connected with a main motor through a shaft coupling. The upper surface of the moving plate is fixedly connected with the extension rod of a hydraulic cylinder. The lower surface of the moving plate is connected with a pressing plate through a fixed block. The lifting block is slidably connected with the lifting lead screw in the lifting groove through screwing. The supporting plate is slidably connected with the pressing groove through the lifting block. The pressing device cooperates with the pressing plate, the pushing plate and the pressing groove to smoothly complete the riveting between the chain plate and the pin shaft. No additional fixing structure is needed, thereby effectively improving the riveting efficiency between the chain plate and the pin shaft.

[0004] However, in the processing flow of the chain plate, due to the complexity and diversity of the processing technology, impurities such as metal cutting debris or dust generated by polishing often remain inside the chain groove. The existence of these impurities cannot be ignored. They will occupy the space that should be tightly fitted between the chain groove and the pin shaft. In the pressing process, this situation will cause the pin shaft to fail to achieve ideal tight fitting with the inner wall of the chain groove, thereby negatively affecting the interference fit between the chain plate and the pin shaft. The reduction of the interference fit degree will directly cause the pressing effect to be poor, for example, the chain plate may not be firmly connected, and may be loose in subsequent use. This is undoubtedly a significant deficiency in the current pressing process, which needs to be improved to ensure the quality and performance of the chain. INVENTION CONTENTS

[0005] In order to improve the pressing effect between the chain plate and the pin shaft, the application provides a unit pressing device for heavy-duty escalator chains.

[0006] The unit pressing device for heavy-duty escalator chains provided by the application adopts the following technical scheme:

[0007] The utility model provides a unit press -fitting device for heavy -duty escalator chain, including the press -fitting box, be provided with the press -fitting device for press -fitting on the press -fitting box, be provided with the press -fitting plate for placing the chain plate on the press -fitting box, the press -fitting plate is set up with the installation groove corresponding to a plurality of chain groove, the cleaning plate is slidably connected in the press -fitting box, the cleaning plate is provided with the connecting shaft corresponding to a plurality of the installation groove, the connecting shaft outer surface is provided with a plurality of brushes, when the connecting shaft inserts the inside of chain groove, the brush abuts on the inside wall in the chain groove, the cleaning plate is provided with the rotation component of driving a plurality of the connecting shaft synchronous rotation, the press -fitting box is provided with the moving assembly of driving the cleaning plate moves.

[0008] By adopting the above technical scheme, after the plurality of chain plates are placed in the press -fitting box, the moving assembly is started, the moving assembly drives the cleaning plate assembly to be close to the press -fitting plate, when the connecting shaft and the brush are completely inserted into the inside of the chain groove, the moving assembly is closed and the rotation component is started, the rotation component drives a plurality of connecting shafts to rotate, the connecting shaft drives the brush to rotate, and the impurities adhered to the inside of the chain groove are removed by the rotating force of the brush, and the removed impurities fall out of the chain groove through the gap between the brushes, so that the cleaning of the residual impurities in the inside of the chain groove is realized.

[0009] Optionally, the cleaning plate is provided with a driving cavity, the end of the connecting shaft extends into the driving cavity, the driving assembly includes a gear fixedly sleeved on the outer surface of the connecting shaft, the two adjacent gears are meshed with each other, the outer surface of the connecting shaft at the end of the driving cavity is fixedly sleeved with a worm wheel, the driving cavity is rotatably connected with a worm gear meshed with the worm wheel, and the press -fitting box is provided with a first motor for driving the worm gear to rotate.

[0010] By adopting the above technical scheme, after the plurality of chain plates are placed in the press -fitting box, the moving assembly is started, the moving assembly drives the cleaning plate assembly to be close to the press -fitting plate, when the connecting shaft and the brush are completely inserted into the inside of the chain groove, the moving assembly is closed and the rotation component is started, the rotation component drives a plurality of connecting shafts to rotate, the connecting shaft drives the brush to rotate, and the impurities adhered to the inside of the chain groove are removed by the rotating force of the brush, and the removed impurities fall out of the chain groove through the gap between the brushes, so that the cleaning of the residual impurities in the inside of the chain groove is realized.

[0011] Optionally, the moving assembly comprises a screw rod and a guide rod arranged on opposite sides of the pressing box respectively, the screw rod is rotationally arranged on the pressing box, one end of the cleaning plate is threadedly connected to the screw rod, and the other end of the cleaning plate is slidingly arranged on the guide rod; and the pressing box is provided with a second motor for driving the screw rod to rotate.

[0012] By adopting the above technical scheme, after the chain plate is placed on the pressing plate, the second motor is started to drive the screw rod to rotate forward, the screw rod drives the cleaning plate to move towards the pressing plate, and the cleaning plate drives the connecting shaft to be inserted into the chain groove for cleaning; after the cleaning is completed, the second motor is started to drive the screw rod to rotate reversely, at this time, the cleaning plate moves away from the pressing plate, and the connecting shaft gradually moves out of the chain groove, thereby avoiding the influence of the connecting shaft on the pressing process.

[0013] Optionally, the connecting shaft is internally provided with a dust suction cavity, a plurality of dust suction ports are formed in the surface of the connecting shaft and communicate with the dust suction cavity, a plurality of air suction main pipes are arranged in the driving cavity, a plurality of air distribution pipes are arranged on the air suction main pipes and correspond to the plurality of dust suction cavities one by one, the air distribution pipes are rotationally and communicatively arranged with the corresponding dust suction cavities, the outer surface of the air distribution pipe is tightly combined with the inner wall of the dust suction cavity, and an air suction pump is arranged on the outer surface of the pressing box and communicates with the air suction main pipe through a gas pipeline.

[0014] By adopting the above technical scheme, in the process of cleaning the impurities by the brush, the air suction pump is started, the air suction pump forms a negative pressure in the air suction main pipe through the gas pipeline, the air in the dust suction cavity is sucked out under the action of the negative pressure because the air suction main pipe communicates with the plurality of dust suction cavities through the air distribution pipes, at this time, the impurities swept by the brush on the inner wall of the chain groove enter the dust suction cavity along with the airflow, and are finally sucked and discharged by the air suction pump, so that the impurities cleaned by the brush are effectively prevented from falling back into the chain groove under the action of gravity or the airflow generated by the rotation of the brush, the cleaning effect of the impurities is further improved, the cleaning degree of the chain groove is ensured, and the pressing quality of the chain plate and the pin shaft is better guaranteed.

[0015] Optionally, a placing groove for placing the chain plate is formed in the surface of the pressing plate, a plurality of fixing holes are formed in the placing groove, the chain plate covers the surface of the fixing hole, a negative pressure cavity corresponding to the plurality of placing grooves is formed in the pressing plate, the negative pressure cavity communicates with the plurality of fixing holes on the corresponding placing groove, and the negative pressure cavity communicates with the air suction end of the air suction pump through the gas pipeline.

[0016] By adopting the technical scheme, when the suction pump is started, the negative pressure cavity forms a negative pressure environment under the action of the suction pump and the gas pipeline. After the chain plate is placed in the placing groove, the chain plate can be firmly adsorbed in the placing groove under the action of the negative pressure suction force, because the negative pressure cavity and the placing groove are communicated through the fixing hole. In this way, the possibility of dislocation caused by displacement of the chain plate during cleaning of impurities in the chain groove and subsequent press-fitting of the pin shaft is avoided, thereby further improving the press-fitting quality.

[0017] Optionally, the outer surface of the gas distribution pipe is fixedly sleeved with a sealing ring, the sealing ring is made of elastic material, and a sealing groove that is in rotational cooperation with the sealing ring is formed in the inner side wall of the dust suction cavity.

[0018] By adopting the technical scheme, when the gas distribution pipe and the dust suction cavity are in rotational cooperation and communication, the sealing ring can be closely embedded in the sealing groove. During rotation of the connecting shaft, the sealing ring is closely attached to the sealing groove by virtue of its elasticity, effectively filling the gap between the gas distribution pipe and the dust suction cavity, preventing air leakage, ensuring the stability of the negative pressure environment in the dust suction port to the suction main pipe, and further ensuring that impurities can be smoothly and efficiently sucked into the suction pump, thereby continuously maintaining good impurity cleaning effect.

[0019] Optionally, the outer surface of the connecting shaft is sleeved with a connecting ring, the cleaning plate is provided with a connecting groove that is in rotational cooperation with the connecting ring, and the outer surface of the connecting ring is closely attached to the inner side wall of the connecting groove.

[0020] By adopting the technical scheme, the connecting groove and the connecting ring can support and position the connecting shaft, ensure that the connecting shaft stably and smoothly rotates around its own axis during rotation, avoid shaking and deviation of the connecting shaft during rotation, and thus ensure that the brush can stably clean impurities on the inner side wall of the chain groove.

[0021] Optionally, the outer surface of the press-fitting box is hingedly connected with a box door, and the box door is provided with a viewing window.

[0022] By adopting the technical scheme, the viewing window facilitates workers to observe the working state of the inside of the press-fitting box, so that the workers can timely find problems and quickly take corresponding measures to adjust or repair.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The application sets up a moving assembly, a rotating assembly, a connecting shaft and a brush. The moving assembly can drive the connecting shaft to insert into the inside of the chain groove. The rotating assembly drives the connecting shaft to rotate synchronously. The rotation of the connecting shaft makes the brush rotate. The impurities adhered to the inside of the chain groove are removed by the rotating force of the brush. The removed impurities fall out of the chain groove through the gap between the brushes, so as to realize the cleaning of the residual impurities in the inside of the chain groove, avoid the adverse effect of dust residue on the interference fit between the chain plate and the pin shaft, and improve the press fitting effect between the chain plate and the pin shaft.

[0025] 2. The application sets up a dust suction cavity, a gas pipeline and a suction pump. The dust suction cavity forms a negative pressure environment through the suction pump and the gas pipeline. The impurities and dust cleaned by the brush are discharged through the dust suction cavity. Such a setting effectively avoids the impurities cleaned by the brush from falling back into the chain groove under the action of gravity or the rotating air flow of the brush, so as to better guarantee the press fitting quality of the chain plate and the pin shaft.

[0026] 3. The application sets up a negative pressure cavity and a fixing hole. Under the action of negative pressure suction, the chain plate can be firmly adsorbed in the placing groove. Such a setting avoids the possibility of displacement of the chain plate during the cleaning of the impurities in the chain groove and the subsequent press fitting of the pin shaft, so as to further improve the press fitting quality. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the structure schematic view of the chain plate in the embodiment of the application.

[0028] Figure 2 is the structure schematic view of the press fitting box in the embodiment of the application.

[0029] Figure 3 is the sectional view of the press fitting box in the embodiment of the application.

[0030] Figure 4 is the sectional view of the driving cavity in the embodiment of the application.

[0031] Figure 5 is Figure 4 the enlarged view of A in FIG.

[0032] Explanation of reference signs: 01, chain plate; 02, chain groove; 1, pressing box; 101, box door; 2, pressing device; 3, pressing plate; 31, mounting groove; 4, cleaning plate; 41, connecting groove; 42, driving cavity; 5, connecting shaft; 51, connecting ring; 52, brush; 6, rotating assembly; 61, gear; 62, worm wheel; 63, worm; 64, first motor; 7, moving assembly; 71, screw rod; 72, guide rod; 73, second motor; 8, dust suction cavity; 81, dust suction port; 82, sealing groove; 9, air suction main pipe; 91, air distribution pipe; 911, sealing ring; 10, air suction pump; 11, gas pipeline; 111, first gas pipe; 112, second gas pipe; 113, third gas pipe; 114, fourth gas pipe; 12, placing groove; 121, fixing hole; 122, negative pressure cavity. DETAILED DESCRIPTION

[0033] The following will be described in detail in combination with the accompanying drawings. Figures 1-5 The application is further described in detail.

[0034] The embodiment of the application discloses a unit pressing device for heavy-duty escalator chain.

[0035] Referring to Figure 1 and Figure 2 A unit pressing device for heavy-duty escalator chain comprises a pressing box 1, the outer surface of the pressing box 1 is hingedly connected with a box door 101, the box door 101 is made of a visual window material, workers can observe the working progress in the pressing box 1 through the visual window, and workers can conveniently control the pressing progress.

[0036] Referring to Figure 1 and Figure 2 A pressing device 2 for pressing a pin shaft is fixedly installed on the inner top wall of the pressing box 1, in the embodiment, the pressing mode of the pressing device 2 is a hydraulic driving type, the technology belongs to the prior art, and thus will not be described here again, a pressing plate 3 for placing connection is fixedly installed in the pressing box 1, a plurality of chain plates 01 are evenly placed along the length direction of the pressing plate 3, two chain grooves 02 are formed in each chain plate 01, in the embodiment, taking that three chain plates 01 are placed on the pressing plate 3 as an example, mounting grooves 31 corresponding to the plurality of chain grooves 02 are formed in the pressing plate 3, and the mounting grooves 31 are the same in shape and size as the chain grooves 02.

[0037] Referring to Figures 2 to 5The cleaning plate 4 is slidably connected in the pressing box 1, a connecting shaft 5 corresponding to each of the mounting grooves 31 is rotatably arranged on the cleaning plate 4, a connecting ring 51 is fixedly arranged on the outer surface of the connecting shaft 5, a connecting groove 41 is arranged on the cleaning plate 4 and rotatably matched with the connecting ring 51, the outer surface of the connecting ring 51 is tightly matched with the inner side wall of the connecting groove 41, and the connecting groove 41 and the connecting ring 51 are arranged to support and position the connecting shaft 5, so that the connecting shaft 5 is prevented from shaking or deviating during rotation.

[0038] With reference to Figures 2 to 5 A plurality of brushes 52 are fixedly arranged on the outer surface of the connecting shaft 5 and evenly distributed in an array on the outer surface of the connecting shaft 5, the brushes 52 abut against the inner side wall of the chain groove 02 when the connecting shaft 5 is inserted into the chain groove 02, the cleaning plate 4 is provided with a rotating assembly 6 for driving the plurality of connecting shafts 5 to synchronously rotate, and the pressing box 1 is provided with a moving assembly 7 for driving the cleaning plate 4 to move.

[0039] With reference to Figures 2 to 5 A driving cavity 42 is arranged in the cleaning plate 4 and has a length direction parallel to the length direction of the cleaning plate 4, the end of each connecting shaft 5 extends into the driving cavity 42, the driving assembly comprises a gear 61 coaxially fixedly connected to the outer surface of the connecting shaft 5, the two adjacent gears 61 are arranged in meshing mode, the outer surface of the connecting shaft 5 at the end of the driving cavity 42 is coaxially fixedly connected with a worm wheel 62, the driving cavity 42 is rotatably connected with a worm 63 arranged in meshing mode with the worm wheel 62, a first motor 64 is fixedly arranged on the outer surface of the pressing box 1, the output shaft of the first motor 64 extends into the driving cavity 42 and is coaxially fixedly connected with the worm 63, and an avoiding groove (not shown in the figure) is arranged on the outer surface of the pressing box 1 and in sliding fit with the output shaft of the first motor 64.

[0040] With reference to Figures 2 to 5 The moving assembly 7 comprises a screw rod 71 and a guide rod 72 arranged on opposite sides of the pressing box 1, respectively, the screw rod 71 is rotatably connected to the pressing box 1, the guide rod 72 is fixedly connected to the inside of the pressing box 1, one end of the cleaning plate 4 perpendicular to the length direction is threadedly connected to the screw rod 71, and the other end is slidably connected to the guide rod 72, an avoiding hole (not shown in the figure) is arranged on the pressing plate 3 and through which the screw rod 71 penetrates, a second motor 73 is fixedly arranged on the outer top wall of the pressing box 1, and the output shaft of the second motor 73 is coaxially fixedly connected with the screw rod 71.

[0041] The worker opens the box door 101, places the three chain plates 01 on the pressing plate 3 in turn, and then starts the second motor 73. The second motor 73 drives the screw rod 71 to rotate in the positive direction. The rotation of the screw rod 71 drives the cleaning plate 4 to move towards the pressing plate 3. When the connecting shaft 5 and the brush 52 are completely inserted into the chain groove 02, the second motor 73 is turned off and the first motor 64 is started. The first motor 64 drives the worm 63 to rotate, which drives the worm gear 62 to rotate. The worm gear 62 drives the connecting shaft 5 connected with the worm gear 62 to rotate. The rotation of the connecting shaft 5 drives the gear 61 coaxially connected with the connecting shaft 5 to rotate. Under the meshing of multiple gears 61, all connecting shafts 5 rotate synchronously, and the synchronous rotation of the brush 52 is realized. In the process of rotating the brush 52, the brush 52 generates a multi-directional force on the impurities adhering to the inner wall of the chain groove 02, so that the impurities adhering to the inside of the chain groove 02 are separated from the chain groove 02. The removed impurities fall out of the chain groove 02 through the gap between the brushes 52, thereby realizing the cleaning of the residual impurities in the chain groove 02, avoiding the adverse effects of dust residues on the interference fit between the chain plate 01 and the pin shaft, and improving the pressing effect between the chain plate 01 and the pin shaft.

[0042] After cleaning, the worker starts the second motor 73 again. The second motor 73 drives the screw rod 71 to rotate in the reverse direction. At this time, the cleaning plate 4 moves away from the pressing plate 3. The connecting shaft 5 gradually moves out of the chain groove 02. Then the pressing device 2 is started. The pressing device 2 presses the pin shaft into the chain groove 02. The pressing operation is completed.

[0043] Referring to Figures 2 to 5 Each connecting shaft 5 is provided with a dust suction cavity 8. Each connecting shaft 5 is provided with a plurality of dust suction ports 81 communicating with the dust suction cavity 8. A suction main pipe 9 is fixedly installed in the driving cavity 42. The suction main pipe 9 extends along the length direction of the driving cavity 42. The suction main pipe 9 is uniformly distributed with a plurality of branch pipes 91 corresponding to the plurality of dust suction cavities 8 along the length direction. The branch pipes 91 are in rotational cooperation and communication with the corresponding dust suction cavities 8.

[0044] Referring to Figures 2 to 5 A sealing ring 911 is fixedly sleeved on the outer surface of each branch pipe 91. The sealing ring 911 is made of elastic material. A sealing groove 82 is formed in the inner wall of the dust suction cavity 8 and is in rotational cooperation with the sealing ring 911. The outer surface of the branch pipe 91 is tightly combined with the inner wall of the dust suction cavity 8. A suction pump 10 is fixedly installed on the outer surface of the pressing box 1. The suction end of the suction pump 10 is in communication with the suction main pipe 9 through a gas pipeline 11. Specifically, the gas pipeline 11 includes a first gas pipe 111 fixedly installed on the suction end of the suction pump 10. A second gas pipe 112 in communication with the suction main pipe 9 is installed on the first gas pipe 111. The second gas pipe 112 is an elastic hose to adapt to the movement of the cleaning plate 4.

[0045] In the process of cleaning impurities by the brush 52, the suction pump 10 is started, and the suction pump 10 forms a negative pressure in the suction main pipe 9 through the gas pipeline 11. Since the suction main pipe 9 is communicated with the plurality of dust collection cavities 8 through the branch pipes 91, the air in the dust collection cavities 8 is sucked out under the action of the negative pressure. At this time, the impurities swept by the brush 52 on the inner side wall of the chain groove 02 enter the inside of the dust collection cavity 8 along with the airflow, and are finally sucked and discharged by the suction pump 10. In this way, the impurities cleaned by the brush 52 are effectively prevented from falling back to the chain groove 02 under the action of gravity or the rotating airflow of the brush 52, the cleaning effect of the impurities is further improved, the cleanliness inside the chain groove 02 is ensured, and the pressing quality of the chain plate 01 and the pin shaft is better guaranteed.

[0046] With reference to Figures 2 to 5 The pressing plate 3 is provided with a placing groove 12 for placing the chain plate 01 on the surface of the pressing plate 3. A plurality of fixing holes 121 are formed in the placing groove 12. When the chain plate 01 is placed in the placing groove 12, the chain plate 01 covers the surface of the plurality of fixing holes 121. A negative pressure cavity 122 corresponding to each placing groove 12 is formed in the inside of the pressing plate 3. The negative pressure cavity 122 is in communication with the fixing hole 121 in the corresponding placing groove 12. The negative pressure cavity 122 is in communication with the suction end of the suction pump 10 through the gas pipeline 11. The gas pipeline 11 further includes a third gas pipe 113 connected to the first gas pipe 111. The end of the third gas pipe 113 extends to the inside of the pressing plate 3 and is provided with a fourth gas pipe 114. The fourth gas pipe 114 is provided with a fifth gas pipe (not shown in the figure) in communication with the plurality of negative pressure cavities 122.

[0047] When the chain plate 01 covers the plurality of fixing holes 121, the suction pump 10 is started, and the suction pump 10 sucks the air in the plurality of negative pressure cavities 122 through the gas pipeline 11. The negative pressure cavities 122 form a negative pressure environment. Since the negative pressure cavities 122 are in communication with the placing grooves 12 through the fixing holes 121, the chain plate 01 can be firmly adsorbed in the placing grooves 12 under the action of the negative pressure suction force. In this way, the possibility of displacement of the chain plate 01 during the process of cleaning the impurities in the chain groove 02 and pressing the pin shaft is avoided, and the pressing quality is further improved.

[0048] The implementation principle of the unit press fitting device for heavy-duty escalator chain is as follows: the worker opens the box door 101, sequentially places three chain plates 01 on the press fitting plate 3, then starts the second motor 73, the second motor 73 drives the screw rod 71 to rotate forward, the screw rod 71 drives the cleaning plate 4 to move towards the direction close to the press fitting plate 3, when the connecting shaft 5 and the brush 52 are completely inserted into the chain groove 02, the second motor 73 is closed and the first motor 64 is started, the first motor 64 drives the worm 63 to rotate, the worm 63 drives the worm wheel 62 to rotate, the worm wheel 62 drives the connecting shaft 5 connected with the worm wheel 62 to rotate, the connecting shaft 5 drives the gear 61 coaxially connected with the connecting shaft 5 to rotate, under the mutual meshing of the plurality of gears 61, all the connecting shafts 5 rotate synchronously, and then the synchronous rotation of the brush 52 is realized, in the process of the rotation of the brush 52, the brush 52 generates multi-directional forces on the impurities adhered to the inner wall of the chain groove 02, so that the impurities adhered to the inside of the chain groove 02 are separated from the chain groove 02, the removed impurities fall out of the chain groove 02 through the gap between the brushes 52, so that the cleaning of the residual impurities in the chain groove 02 is realized, the adverse effects of the dust residues on the interference fit between the chain plate 01 and the pin shaft are avoided, and the press fitting effect between the chain plate 01 and the pin shaft is improved.

[0049] After the cleaning is completed, the worker starts the second motor 73 again, the second motor 73 drives the screw rod 71 to rotate reversely, at this time, the cleaning plate 4 moves away from the press fitting plate 3, the connecting shaft 5 gradually moves out of the chain groove 02, then the press fitting device 2 is started, the press fitting device 2 presses the pin shaft into the chain groove 02, and the press fitting operation is completed.

[0050] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: all equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A unit press fitting device for heavy duty escalator chain, comprising a press fitting box (1) provided with a press fitting device (2) for press fitting, characterized in that, The pressing box (1) is provided with a pressing plate (3) for placing the chain plate (01), the pressing plate (3) is provided with a mounting groove (31) corresponding to a plurality of chain grooves (02), the pressing box (1) is slidably connected with a cleaning plate (4), the cleaning plate (4) is provided with a connecting shaft (5) corresponding to a plurality of mounting grooves (31), the connecting shaft (5) is provided with a plurality of brushes (52) on the outer surface, when the connecting shaft (5) is inserted into the chain groove (02), the brush (52) abuts on the inner side wall of the chain groove (02), the cleaning plate (4) is provided with a rotating assembly (6) for driving a plurality of connecting shafts (5) to rotate synchronously, the pressing box (1) is provided with a moving assembly (7) for driving the cleaning plate (4) to move.

2. A unit press fitting device for a heavy duty escalator chain according to claim 1, wherein The driving cavity (42) is formed in the cleaning plate (4), the end of the connecting shaft (5) extends into the driving cavity (42), the driving assembly comprises a gear (61) fixedly sleeved on the outer surface of the connecting shaft (5), the two adjacent gears (61) are meshed with each other, the worm wheel (62) is fixedly sleeved on the outer surface of the connecting shaft (5) at the end of the driving cavity (42), the driving cavity (42) is rotatably connected with the worm (63) meshed with the worm wheel (62), and the pressing box (1) is provided with the first motor (64) for driving the worm (63) to rotate.

3. A unit press fitting device for a heavy duty escalator chain according to claim 1, wherein The moving assembly (7) comprises a screw rod (71) and a guide rod (72) arranged on opposite sides of the pressing box (1) respectively, the screw rod (71) is rotatably arranged on the pressing box (1), one end of the cleaning plate (4) is threadedly connected to the screw rod (71), and the other end is slidably arranged on the guide rod (72), and the pressing box (1) is provided with the second motor (73) for driving the screw rod (71) to rotate.

4. A unit press fitting device for a heavy duty escalator chain according to claim 2, wherein The dust suction cavity (8) is formed in the connecting shaft (5), a plurality of dust suction ports (81) are formed in the surface of the connecting shaft (5) and communicated with the dust suction cavity (8), the air suction main pipe (9) is arranged in the driving cavity (42), a plurality of air distribution pipes (91) are arranged on the air suction main pipe (9) and correspond to a plurality of dust suction cavities (8), the air distribution pipe (91) is rotatably and communicatively arranged with the corresponding dust suction cavity (8), the outer surface of the air distribution pipe (91) is tightly attached to the inner side wall of the dust suction cavity (8), and the air suction pump (10) is arranged on the outer surface of the pressing box (1).

5. A unit press fitting device for a heavy duty escalator chain according to claim 4, wherein The surface of the pressing plate (3) is provided with a placing groove (12) for placing the chain plate (01), a plurality of fixing holes (121) are formed on the placing groove (12), the chain plate (01) covers the surface of the fixing hole (121), a negative pressure cavity (122) corresponding to the plurality of placing grooves (12) is formed in the pressing plate (3), the negative pressure cavity (122) is communicated with the plurality of fixing holes (121) on the corresponding placing groove (12), and the negative pressure cavity (122) is communicated with the suction end of the air suction pump (10) through the gas pipeline (11).

6. A unit press fitting device for a heavy duty escalator chain according to claim 5, wherein The outer surface of the gas distribution pipe (91) is fixedly provided with a sealing ring (911), the sealing ring (911) is made of elastic material, and a sealing groove (82) that is in rotational cooperation with the sealing ring (911) is formed in the inner side wall of the dust collection cavity (8).

7. A unit press fitting device for heavy duty escalator chain according to claim 1, wherein The outer surface of the connecting shaft (5) is provided with a connecting ring (51), the cleaning plate (4) is provided with a connecting groove (41) that is in rotational cooperation with the connecting ring (51), and the outer surface of the connecting ring (51) is closely attached to the inner side wall of the connecting groove (41).

8. A unit press fitting device for heavy duty escalator chain according to claim 1, characterized in that, The outer surface of the pressing box (1) is hingedly provided with a box door (101), and the box door (101) is provided with a viewing window.

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