Pushing chain type lifting system for ladder

Abstract

The invention relates to the technical field of chain transmission equipment, in particular to a pushing chain type lifting system for ladders, which comprises a driving part, a chain guide rail is mounted at the top end of a driving box in the driving part, the driving box and the chain guide rail are both in sliding connection with a pushing chain, an end chain link is connected to the end of the pushing chain, and a mounting mechanism is mounted on the end chain link. The chain guide rail of the lifting system is installed above the driving box, so that the chain guide rail does not occupy extra space, meanwhile, the power mechanism is arranged in the driving box to drive the pushing chain, matching among parts is more compact, and the lifting system is more convenient to use. Therefore, when the device is applied to an existing elevator shaft, the space utilization rate of the shaft is fully increased.

Description

Technical Field

[0001] The invention relates to the technical field of chain transmission equipment, and in particular to a push chain lifting system for ladders. Background Art

[0002] Elevators play an important role in the fields of passenger transportation and cargo transportation. Currently, the three main types of elevators use traction mechanisms, screw mechanisms or hydraulic mechanisms as lifting systems. The working principle of a traction elevator is that the friction between the traction wheel and the wire rope is used by the traction machine to generate traction force on the wire rope. The wire rope passes through the guide wheel and the anti-rope wheel to connect the car and the counterweight and drive it up and down. The working principle of a screw elevator is that the motor drives the nut to rotate upward or downward along the screw, thereby driving the car to rise and fall. The working principle of a hydraulic elevator is that the hydraulic oil is pressed into the cylinder by a hydraulic pump to make the plunger move linearly, thereby driving the car to rise and fall.

[0003] However, the prior art still has shortcomings. The driving device of the existing elevator lifting system is extremely large and occupies a large space in the hoistway. It can be seen that the existing elevator lifting system seriously reduces the space utilization rate inside the hoistway. Summary of the invention

[0004] The present invention provides a push chain lifting system for ladders, which is used to solve the problem raised in the background technology.

[0005] In order to achieve the above-mentioned invention object, the present invention provides the following technical solutions: a push chain lifting system for ladders, comprising: a driving member, a chain guide rail is installed on the top of the driving box in the driving member, the driving box and the chain guide rail are both slidably connected with the push chain, the end of the push chain is connected with an end link, the end link is equipped with an installation mechanism, the installation mechanism is arranged away from the driving box, and a power mechanism is provided in the driving box to drive the push chain.

[0006] Preferably, the chain guide comprises: a driving guide rail and a storage guide rail, the driving guide rail and the storage guide rail are of the same structure, the driving guide rail and the storage guide rail are vertically mounted on the opening at the top of the driving box, a roller track is installed in the driving box, one end of the roller track is connected to the bottom end of the driving guide rail, and the other end of the roller track is connected to the bottom end of the storage guide rail, a through groove is penetrated through each of the two inner walls of the roller track, the two through grooves are adjacent to the bearings, the bearings are installed on one side of the inner wall of the driving box, the top ends of the driving guide rail and the storage guide rail are connected through the guide rail top plate, and a ground mounting seat is installed at the bottom of the driving box.

[0007] Preferably, roller guide grooves are provided on the inner side walls of the driving guide rail and the storage guide rail, and the inner wall of the roller track is coplanar with the inner wall of the roller guide groove.

[0008] Preferably, a T-slot is respectively provided on the outer side walls of the driving guide rail and the storage guide rail, and the outer side walls of the driving guide rail and the storage guide rail are in contact and cooperate with the wall fixing plate and the guide rail fixing plate, a bolt is inserted into each of the two circular holes of the wall fixing plate, and the end of each bolt is placed in a T-slot, and the end of the bolt is threadedly connected with a T-nut, the T-nut is placed in the T-slot, and the bolt head at the other end of the bolt cooperates with the T-nut to fix the wall fixing plate, and a bolt is inserted into each of the two circular holes of the guide rail fixing plate, and the end of each bolt is placed in the T-slot, and the end of the bolt is threadedly connected with a T-nut, and the bolt head at the other end of the bolt cooperates with the T-nut to fix the guide rail fixing plate.

[0009] Preferably, the push chain includes: an outer roller, a roller and a chain plate, the inner side wall of the roller track is perpendicular to the roller, the bottom ends of two chain plates are parallelly mounted on the roller, the chain plate and the roller form a chain link, the top end of the chain plate is rotationally matched with the roller of one chain link, the roller is rotationally matched with the top end of the chain plate in another chain link, the end of the roller is rotatably connected to the outer roller, the outer roller is arranged away from the chain plate, and the outer roller is slidably connected to the roller track or the roller guide groove.

[0010] Preferably, a protrusion is provided on the side wall at the top end of the chain plate, and a slot is provided at the bottom of the chain plate, which is plugged into and cooperates with the protrusion of the chain plate in another chain link, and the protrusion is arranged away from the middle part of the push chain, and the middle part of the push chain is slidably connected in the roller track, one side of the push chain is slidably connected in the driving guide rail, the link on one side of the push chain is connected to the end link, the end link is arranged away from the driving box, the opening of the driving guide rail is arranged toward the end link, and the other side of the push chain is slidably connected in the storage guide rail.

[0011] Preferably, the inner wall of the roller guide groove is provided with two chain guide grooves, the two chain guide grooves are respectively arranged on both sides of the roller guide groove, the roller guide groove is vertically arranged, and the ends of multiple guide columns are inserted in the chain guide groove, and the other end of the guide column is slidably matched with the chain plate.

[0012] Preferably, the power mechanism includes: a sprocket, a motor mounting seat is provided on the side of the drive box, a motor is mounted on the motor mounting seat, the output shaft of the motor is matched with the second bearing set, the second bearing is mounted on the inner wall of the other side of the drive box, the end of the output shaft of the motor is matched with the bearing set, a sprocket is mounted on the output shaft, the sprocket is arranged in the drive box, the side of the sprocket is placed in the through groove, and is meshed and connected with the push chain.

[0013] Preferably, a maintenance window is opened on the end face of the drive box, the maintenance window is plugged into the window cover, a guide plate is installed on the window cover, the guide plate is plugged into the sealing port at the bottom of the roller track, a guide surface is provided on the guide plate, and the guide surface is coplanar with the bottom wall of the roller track.

[0014] Preferably, the mounting mechanism comprises: a mounting seat and a joint, the mounting seat is installed on the top of the joint, a horizontal U-shaped groove is opened on the end face of the joint, the horizontal U-shaped groove is plug-fitted with a roller 2, the bottom of the joint is in contact with another roller 2, and both side walls of the joint are in contact with an end chain plate, each end chain plate is connected to two rollers 2, and roller 2 is installed on roller 2, which is arranged away from the end chain plate and is slidably connected to the roller guide groove, and the bottom of the end chain plate is rotatably connected to the roller at the end of the push chain.

[0015] The beneficial effects of the present invention are as follows:

[0016] In the scheme of the present invention:

[0017] The chain guide rail of the lifting system is installed above the drive box, so the chain guide rail does not occupy additional space. At the same time, a power mechanism is arranged in the drive box to drive the push chain, and the coordination between the components is more compact. Therefore, when the device is applied to the existing elevator shaft, the space utilization rate of the shaft is fully improved;

[0018] The chain guide rail not only increases the guiding effect of the push chain, but also increases the movement stroke of the push chain during operation. The push chain transmission has a higher transmission speed than the screw transmission. Therefore, the running speed of the elevator using this device is higher than that of the traditional screw elevator.

[0019] The push chain is purely mechanically driven and does not require the use of hydraulic oil. Therefore, there is no risk of oil leakage polluting the environment, which reduces the difficulty of subsequent maintenance and cleaning. In addition, its movement stroke is higher than that of elevators with hydraulic transmission as the driving component, and it is more practical and applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the meshing of the push chain and the sprocket of the present invention;

[0023] Figure 4 It is a schematic diagram of the internal guide of the present invention;

[0024] Figure 5 This is a schematic diagram of the chain guide rails of the present invention, all of which are open outwards;

[0025] Figure 6 This is a schematic diagram of the present invention in which the opening of the driving guide rail faces outwards and the opening of the storage guide rail faces inwards;

[0026] Figure 7 It is a schematic diagram of the structure of the drive box of the present invention;

[0027] Figure 8 It is a schematic diagram of the end link of the present invention;

[0028] Fig. 9 It is a schematic diagram of the connection between the first joint and the end link of the present invention;

[0029] Fig.10 This is a schematic diagram of the connection between the second connector and the end link of the present invention.

[0030] Among them: driving part 1, maintenance window 1-1, chain guide rail 2, roller guide groove 2-1, chain guide groove 2-2, T-slot 2-3, push chain 3, outer roller 3-4, roller 3-5, chain link 3-6, chain plate 3-7, driving box 4, roller track 4-1, ground mounting seat 4-2, motor mounting seat 4-3, power mechanism 5, sprocket 5-1, guide plate 6, guide surface 6-1, driving guide rail 7, storage guide rail 8, guide column 9, end chain link 10, end chain plate 10-1, joint 11, wall fixing plate 12, guide rail top plate 13, guide rail fixing plate 14, window sealing plate 15. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] Example 1: Reference Figure 1-Figure 10 A push chain lifting system for ladders comprises: a driving member 1, a driving box 4 in the driving member 1 is provided with a chain guide rail 2 at the top, the driving box 4 and the chain guide rail 2 are both slidably connected with a push chain 3, an end of the push chain 3 is connected with an end link 10, an installation mechanism is installed on the end link 10, the installation mechanism is arranged away from the driving box 4, and a power mechanism 5 is provided in the driving box 4 to drive the push chain 3.

[0033] The principles and beneficial effects of the above scheme are:

[0034] The elevator car is connected to the end link 10 through the mounting mechanism, and the end link 10 is connected to the end of the push chain 3. When the elevator car needs to be adjusted in height, the power mechanism 5 is started to drive the push chain 3. During the driving process of the push chain 3, the chain guide 2 provides guidance for it. The chain guide 2 of the lifting system is installed above the drive box 4, so the chain guide 2 does not occupy additional space. At the same time, the power mechanism 5 is arranged in the drive box 4 to drive the push chain 3. The cooperation between the parts is more compact, so the space utilization rate of the shaft is fully improved when the device is applied to the existing elevator shaft; at the same time, by setting the chain guide 2, not only the guiding effect of the push chain 3 is increased, but also the movement stroke of the push chain 3 is increased during work. The push chain 3 is driven, and the transmission speed is higher than the screw drive. Therefore, the elevator running speed of the device is higher than the running speed of the traditional screw elevator; further, the push chain 3 is purely mechanically driven, and no hydraulic oil is required, so there is no risk of oil leakage and pollution of the environment, which reduces the difficulty of later maintenance and cleaning, and its movement stroke is higher than that of the elevator with hydraulic transmission as the driving component, and the practicality and applicability are stronger.

[0035] Example 2: Reference Figure 1-Figure 10 The chain guide 2 includes: a driving guide rail 7 and a storage guide rail 8. The driving guide rail 7 and the storage guide rail 8 have the same structure and are vertically installed on the opening at the top of the driving box 4. A roller track 4-1 is installed in the driving box 4. One end of the roller track 4-1 is connected to the bottom end of the driving guide rail 7, and the other end of the roller track 4-1 is connected to the bottom end of the storage guide rail 8. A through groove is penetrated through each of the two inner walls of the roller track 4-1. The two through grooves are adjacent to the bearings. The bearings are installed on one side of the inner wall of the driving box 4. The top ends of the driving guide rail 7 and the storage guide rail 8 are connected through the guide rail top plate 13. The bottom end of the driving box 4 is equipped with a ground mounting seat 4-2.

[0036] The roller track 4-1 is specifically U-shaped.

[0037] The inner side walls of the driving guide rail 7 and the storage guide rail 8 are both provided with roller guide grooves 2-1, and the inner wall of the roller track 4-1 is coplanar with the inner wall of the roller guide groove 2-1.

[0038] A T-slot 2-3 is respectively provided on the outer wall of the driving guide rail 7 and the storage guide rail 8, and the outer walls of the driving guide rail 7 and the storage guide rail 8 are in contact with the wall fixing plate 12 and the guide rail fixing plate 14. A bolt is inserted into each of the two circular holes of the wall fixing plate 12, and the end of each bolt is placed in a T-slot 2-3. The end of the bolt is threadedly connected with a T-nut, and the T-nut is placed in the T-slot 2-3. The bolt head at the other end of the bolt cooperates with the T-nut to fix the wall fixing plate 12. A bolt two is inserted into each of the two circular holes of the guide rail fixing plate 14, and the end of each bolt two is placed in the T-slot 2-3. The end of the bolt two is threadedly connected with a T-nut, and the bolt head at the other end of the bolt two cooperates with the T-nut to fix the guide rail fixing plate 14.

[0039] Each T-slot 2-3 is arranged vertically.

[0040] The principles and beneficial effects of the above scheme are:

[0041] A ground mounting seat 4-2 is installed at the bottom of the drive box 4, which is convenient for connecting the device to the ground and can further improve the stability of the device when it is used. The drive guide rail 7 and the storage guide rail 8 are vertically installed on the opening at the top of the drive box 4, making full use of the space inside the elevator shaft. The top ends of the drive guide rail 7 and the storage guide rail 8 are further connected through a guide rail top plate 13, which increases the stability of the drive guide rail 7 and the storage guide rail 8 after installation; T-slots 2-3 are provided on the outer walls of the drive guide rail 7 and the storage guide rail 8, and the T-slots 2-3 are used to place the ends of the bolts and the bolts 2, and the bolts are plugged into the round holes on the wall fixing plate 12. The end is threadedly connected with the T-nut, and the two cooperate with each other to fix the wall fixing plate 12. The wall fixing plate 12 is used to fix the wall in the elevator shaft. The second bolt is plugged into the second round hole on the guide rail fixing plate 14. The second end of the bolt is threadedly connected with the second T-nut, and the two cooperate with each other to fix the guide rail fixing plate 14. The guide rail fixing plate 14 contacts and cooperates with the side walls of the driving guide rail 7 and the storage guide rail 8. The guide rail fixing plate 14 and the guide rail top plate 13 cooperate with each other to increase the stability of the driving guide rail 7 and the storage guide rail 8, so as to avoid displacement between the guide rail and the mechanism under high-intensity working conditions, and further improve the safety of the device when in use;

[0042] Since the T-slot 2-3 is vertically arranged, the height of the T-nut and the T-nut 2 in the T-slot 2-3 is adjustable, so the height of the wall fixing plate 12 and the guide rail fixing plate 14 is adjustable. When the device is fixed to the wall, a suitable position can be selected to install the wall fixing plate 12, which greatly improves the adjustability of the device during installation; since the relative height of the wall fixing plate 12 and the driving guide rail 7 and the storage guide rail 8 is adjustable, when installing the guide rail fixing plate 14, it is necessary to consider the influence of the external force on the driving guide rail 7 and the storage guide rail 8 after installation. The guide rail fixing plate 14 can be adjusted accordingly according to the installation height of the wall fixing plate 12, further balancing the external force on the device, greatly ensuring the stability and structural strength of the device, and increasing the adaptability of the device to different shafts during installation; further, since the T-slot 2-3 is vertically arranged, it provides great convenience for the installation of the T-nut and the T-nut 2.

[0043] Since the bottom surface of the driving box 4 is provided with a ground mounting seat 4-2, the height can be set lower than the height of the elevator shaft, further reducing the height of the chain guide rail 2. Compared with the traditional elevator driving device generally arranged above the elevator, after the output end of the device is connected with the elevator, the space in the elevator shaft is further saved. Therefore, the elevator shaft does not need a pit and a machine room, which greatly saves the cost of the construction of the elevator shaft.

[0044] The T-nut and T-nut 2 have the same structure, and the specific model of the T-nut is: BJ749-08010.

[0045] Example 3: Reference Figure 1-Figure 10 The push chain 3 includes: an outer roller 3-4, a roller 3-5 and a chain plate 3-7. The inner side wall of the roller track 4-1 is vertically arranged with the roller 3-5. The bottom ends of two chain plates 3-7 are installed in parallel on the roller 3-5. The chain plate 3-7 and the roller 3-5 form a chain link 3-6. The top of the chain plate 3-7 is rotationally matched with the roller 3-5 of one chain link 3-6. The roller 3-5 is rotationally matched with the top of the chain plate 3-7 in another chain link 3-6. The end of the roller 3-5 is rotationally connected with the outer roller 3-4. The outer roller 3-4 is arranged away from the chain plate 3-7. The outer roller 3-4 is slidingly connected with the roller track 4-1 or the roller guide groove 2-1.

[0046] The top side wall of the chain plate 3-7 is provided with a protrusion, and the bottom of the chain plate 3-7 is provided with a slot, which is plugged into and matched with the protrusion of the chain plate 3-7 in another chain link 3-6, and the protrusion is arranged away from the middle part of the push chain 3, and the middle part of the push chain 3 is slidably connected in the roller track 4-1, and one side of the push chain 3 is slidably connected in the driving guide rail 7, and the chain link 3-6 on one side of the push chain 3 is connected to the end chain link 10, and the end chain link 10 is arranged away from the driving box 4, and the opening of the driving guide rail 7 is arranged toward the end chain link 10, and the other side of the push chain 3 is slidably connected in the storage guide rail 8.

[0047] The inner wall of the roller guide groove 2-1 is provided with two chain guide grooves 2-2, which are respectively arranged on both sides of the roller guide groove 2-1. The roller guide groove 2-1 is vertically arranged, and the ends of a plurality of guide columns 9 are inserted in the chain guide groove 2-2, and the other end of the guide column 9 is slidably matched with the chain plate 3-7.

[0048] The outer rollers 3-4 are made of polymer materials.

[0049] The principles and beneficial effects of the above scheme are:

[0050] The two chain plates 3-7 are connected by a roller 3-5, and the chain plates 3-7 and the roller 3-5 form a chain link 3-6. The end of the roller 3-5 is rotatably connected with an outer roller 3-4, and the outer roller 3-4 can be slidably connected with the roller track 4-1 or the roller guide groove 2-1. After adding the outer roller 3-4, the friction between the chain link 3-6 in the push chain 3 and other parts in the device during the drive of the power mechanism 5 is avoided. The outer roller 3-4 is made of polymer material. Since the polymer material is used instead of the metal material, the push chain 3 in the working state can avoid friction and collision with other parts in the device while also avoiding noise, which can improve the user experience and comfort. The elimination of noise synchronously eliminates the vibration generated by the push chain 3 during operation, and further avoids the loosening or falling off of other parts in the device during vibration, thereby improving the safety of the device during use, and can extend its service life and reduce the number of inspections and maintenance of the device. The use of polymer material increases the overall mechanical strength of the push chain 3, avoiding stress deformation after long-term operation.

[0051] The roller 3-5 is rotatably connected to the chain plate 3-7 in one chain link 3-6, and the top of the chain plate 3-7 is rotatably connected to the roller 3-5 in another chain link 3-6. In order to facilitate the middle part of the push chain 3 to turn in the roller track 4-1, the roller 3-5 is arranged close to the middle part of the push chain 3. In order to facilitate one side of the push chain 3 to rise or fall in the roller guide groove 2-1 in the driving guide rail 7 and the other side of the push chain 3 to fall or rise in the roller guide groove 2-1 in the storage guide rail 8, a protrusion is arranged on the chain plate 3-7, and the protrusion is plug-fitted with the slot of one chain link 3-6, and the protrusion is arranged away from the middle part of the push chain 3. The storage of the middle part of the push chain 3 in the roller track 4-1 improves the utilization efficiency of the space in the device.

[0052] During the movement of the push chain 3, the guide column 9 in the chain guide groove 2-2 can slide with the chain plate 3-7. The guide column can increase the sliding area between the chain plate 3-7 and the device, and can also provide support for the chain plate 3-7 to prevent it from swinging during the movement, further improving the stability of the push chain 3 during movement. More specifically, the push chain 3 will not cause wear to the driving guide rail 7 and the storage guide rail 8. In addition, the chain guide groove 2-2 cooperates with the guide column to share the load on the push chain 3 during operation, thereby increasing the overall load-bearing capacity of the device.

[0053] Since the opening direction of the driving guide rail 7 and the storage guide rail 8 is adjustable, and the relative position of the chain plate 3-7 and the device remains unchanged, after the opening direction of the driving guide rail 7 or the storage guide rail 8 is changed, the guide column 9 can be inserted into the corresponding chain guide groove 2-2 according to actual conditions, so that the guide column 9 and the chain plate 3-7 can be slidably matched, which increases the practicality and applicability of the device. At the same time, it can also avoid the guide column 9 from blocking the push chain 3 in the device, which is convenient for the installation and setting of other parts.

[0054] Example 4: Reference Figure 1-Figure 10 The power mechanism 5 includes: a sprocket 5-1, a motor mounting seat 4-3 is provided on the side of the drive box 4, a motor is installed on the motor mounting seat 4-3, the output shaft of the motor is matched with the second bearing set, the second bearing is installed on the inner wall of the other side of the drive box 4, the end of the output shaft of the motor is matched with the bearing set, and a sprocket 5-1 is installed on the output shaft, the sprocket 5-1 is set in the drive box 4, the side of the sprocket 5-1 is placed in the through groove, and is meshed with the push chain 3.

[0055] The principles and beneficial effects of the above scheme are:

[0056] When it is necessary to drive the push chain 3 in the device, the motor is started, and the output shaft of the motor rotates forward or reversely. When the output shaft of the motor rotates, it drives the sprocket 5-1 to rotate, and the rotation of the sprocket 5-1 drives the push chain 3 meshed with it to move. The end of the push chain 3 in the driving guide rail 7 is connected to the end link 10, and the end link 10 can move upward or downward. The end link 10 drives the elevator car to move upward or downward through the installation mechanism. The transmission mode of this device is the push chain 3 transmission, which in turn drives the movement of the elevator car. Its transmission speed is higher than that of the screw transmission mechanism. Therefore, the running speed of the elevator using this device is higher than that of the traditional screw elevator. The push chain 3 is purely mechanically driven, does not require hydraulic oil, and there is no risk of oil leakage and pollution of the environment. It has a higher carrying capacity, so its movement stroke is higher than that of the elevator with hydraulic transmission as the driving component, and it is more practical and applicable.

[0057] The driving guide rail 7 and the receiving guide rail 8 have the same structure, so both have openings. When the opening of the driving guide rail 7 and the opening of the receiving guide rail 8 are in opposite directions, the receiving guide rail 8 can provide storage space for the push chain 3. By adding the receiving guide rail 8, the length of the entire push chain 3 is further increased, so that the device has a higher lifting height; at this time, it is convenient to observe the running status of the push chain 3 and to lubricate and maintain the push chain 3. It is also possible to choose to install the end link 10 at the end of the push chain 3 in the driving guide rail 7 according to the actual situation, or in the receiving guide rail 8. The end link 10 is installed at the end of the push chain 3, or the end link 10 is installed at both ends of the push chain 3 at the same time; and when the open end of the driving guide rail 7 and the open end of the storage guide rail 8 are arranged in the same direction, a counterweight can be added between the two guide rails, at the other end of the push chain 3 away from the end link 10, so as to balance the weight of the elevator connected to the end of the push chain 3 with the end link 10, further reduce the torque borne by the power mechanism 5, and at the same time reduce the input power required by the power mechanism 5, so as to achieve the purpose of saving energy consumption; at the same time, after adding the counterweight , the overall stability of the device is improved, and the improvement in stability is specifically reflected in two aspects. First, it is the stability of the center of gravity of the structure. Second, it can reduce vibration and thus avoid the negative impact of vibration. It can not only make the device more stable during operation, but also prevent some parts of the device from stress deformation after a long period of work, thereby improving the overall service life of the device; at this time, the counterweight can be set at the end of the push chain 3 in the storage guide rail 8. The advantage of such a setting is that the counterweight will not occupy additional space and can prevent external dust from entering the storage guide rail 8; through the meshing connection between the sprocket 5-1 and the push chain, when it is necessary to drive the push chain 3, the rotation output by the motor can be quickly transmitted to the push chain 3, and further transmitted to the elevator car, reducing the response time of the device when working. When the motor stops working, the push chain 3 can stop working immediately in the device. The push chain 3 made of polymer materials has extremely strong compressive and tensile resistance. Therefore, it will not break itself during startup and emergency stop. It can be further known that there is no risk of falling and hitting the top during work.

[0058] Example 5: Reference Figure 1-Figure 10 A maintenance window 1-1 is provided on the end face of the driving box 4, and the maintenance window 1-1 is plugged into the window sealing plate 15. A guide plate 6 is installed on the window sealing plate 15, and the guide plate 6 is plugged into the sealing opening at the bottom of the roller track 4-1. A guide surface 6-1 is provided on the guide plate 6, and the guide surface 6-1 is coplanar with the bottom wall of the roller track 4-1.

[0059] The principles and beneficial effects of the above scheme are:

[0060] When the device stops working, the window sealing plate 15 can be removed from the maintenance window 1-1, and then the window sealing plate 15 and the guide plate 6 are synchronously taken out of the drive box 4, and the sealing port at the bottom of the roller track 4-1 is unsealed. After the end chain link 10 is removed, the push chain 3 can be taken out of the device through the maintenance window 1-1 and the sealing port for maintenance or replacement of a new push chain 3.

[0061] Example 6: Reference Figure 1-Figure 10 The mounting mechanism includes: a mounting seat and a joint 11, the top of the joint 11 is provided with a mounting seat, the end face of the joint 11 is provided with a horizontal U-shaped groove, the horizontal U-shaped groove is plug-fitted with a roller 2, the bottom of the joint 11 is in contact with another roller 2, and the two side walls of the joint 11 are in contact with an end chain plate 10-1, each end chain plate 10-1 is connected with two rollers 2, and roller 2 is provided on roller 2, which is arranged away from the end chain plate 10-1 and is slidably connected with the roller guide groove 2-1, and the bottom of the end chain plate 10-1 is rotatably connected with the roller 3-5 at the end of the push chain 3.

[0062] The bottom surface of the joint 11 is provided with an inverted U-shaped groove, which is plug-fitted with the two rollers. A fastening bolt is threadedly connected to the threaded hole at the open end of the inverted U-shaped groove, and the side wall of the bolt is in contact with the side wall of the two rollers.

[0063] The length of the end link plate 10 - 1 is greater than the length of the link plates 3 - 7 .

[0064] A slot 2 is formed at the bottom of the end link plate 10 - 1 , and the slot 2 is plugged into and matched with the protrusion at the end of the driving part 3 - 1 .

[0065] The principles and beneficial effects of the above scheme are:

[0066] Since the top of the mounting seat supports the elevator car, the bottom of the mounting seat is connected to the joint 11. When a horizontal U-shaped groove is opened on the end face of the joint 11, the horizontal U-shaped groove is plugged into the roller 2, and it is convenient to disassemble and assemble the joint 11 on the end link 10, and the distance between the joint 11 and the drive box 4 can be adjusted at the same time, and the distance between the elevator car and the drive box 4 can be further adjusted; when an inverted U-shaped groove is opened on the bottom surface of the joint 11, the joint 11 has strong stability after being connected to the end link, and the elevator car will not be offset when the push chain 3 drives it to move up or down, and the safety is strong; the advantage of the horizontal U-shaped groove is that the horizontal extension distance of the mounting seat is variable, which can cope with the situation where the elevator car and the device itself have relative horizontal displacement, allowing the joint 11 to have a certain horizontal movement during lifting, increasing applicability; the advantage of the inverted U-shaped groove is that it has good stability, the joint 11 itself can remain horizontal, so that the plane of the mounting seat will not tilt, and it is rigidly connected to the elevator car with strong stability.

[0067] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A push chain lifting system for ladders, characterized in that: include: A driving member (1) is provided, wherein a driving box (4) in the driving member (1) is provided with a chain guide rail (2) at the top end thereof, the driving box (4) and the chain guide rail (2) are both slidably connected to a push chain (3), an end link (10) is connected to the end of the push chain (3), an installation mechanism is provided on the end link (10), the installation mechanism is arranged away from the driving box (4), and a power mechanism (5) is provided in the driving box (4) to drive the push chain (3).

2. A push chain lifting system for ladders according to claim 1, characterized in that: The chain guide rail (2) comprises: a driving guide rail (7) and a receiving guide rail (8), the driving guide rail (7) and the receiving guide rail (8) having the same structure, the driving guide rail (7) and the receiving guide rail (8) being vertically mounted on the opening at the top of the driving box (4), a roller track (4-1) being mounted in the driving box (4), one end of the roller track (4-1) being connected to the bottom end of the driving guide rail (7), and the other end of the roller track (4-1) being connected to the bottom end of the receiving guide rail (8), a through groove being respectively formed through the two inner walls of the roller track (4-1), the two through grooves being adjacent to the bearing, the bearing being mounted on the inner wall of one side of the driving box (4), the top ends of the driving guide rail (7) and the receiving guide rail (8) being connected via a guide rail top plate (13), and a ground mounting seat (4-2) being mounted at the bottom end of the driving box (4).

3. A push chain lifting system for ladders according to claim 2, characterized in that: The inner side walls of the driving guide rail (7) and the storage guide rail (8) are both provided with roller guide grooves (2-1), and the inner wall of the roller track (4-1) and the inner wall of the roller guide groove (2-1) are arranged coplanarly.

4. A push chain lifting system for ladders according to claim 3, characterized in that: A T-shaped groove (2-3) is respectively provided on the outer side wall of the driving guide rail (7) and the storage guide rail (8). The outer side walls of the driving guide rail (7) and the storage guide rail (8) are in contact with and matched with the wall fixing plate (12) and the guide rail fixing plate (14). A bolt is respectively inserted into the two circular holes of the wall fixing plate (12). The end of each bolt is respectively placed in a T-shaped groove (2-3). The end of the bolt is threadedly connected with a T-shaped nut. The T-shaped nut is placed in the T-shaped groove (2-3). The bolt head at the other end of the bolt cooperates with the T-shaped nut to fix the wall fixing plate (12). A bolt is respectively inserted into the two circular holes of the guide rail fixing plate (14). The end of each bolt is respectively placed in the T-shaped groove (2-3). The end of the bolt is threadedly connected with a T-shaped nut. The bolt head at the other end of the bolt cooperates with the T-shaped nut to fix the guide rail fixing plate (14).

5. A push chain lifting system for ladders according to claim 3, characterized in that: The push chain (3) comprises: an outer roller (3-4), a roller (3-5) and a chain plate (3-7); the inner side wall of the roller track (4-1) is arranged perpendicularly to the roller (3-5); the bottom ends of two chain plates (3-7) are arranged in parallel on the roller (3-5); the chain plate (3-7) and the roller (3-5) form a chain link (3-6); the top end of the chain plate (3-7) is rotatably connected to the roller (3-5) of one chain link (3-6); the roller (3-5) is rotatably connected to the top end of the chain plate (3-7) in another chain link (3-6); the end of the roller (3-5) is rotatably connected to the outer roller (3-4); the outer roller (3-4) is arranged away from the chain plate (3-7); and the outer roller (3-4) is slidably connected to the roller track (4-1) or the roller guide groove (2-1).

6. A push chain lifting system for ladders according to claim 5, characterized in that: The top side wall of the chain plate (3-7) is provided with a protrusion, and the bottom of the chain plate (3-7) is provided with a slot, which is plugged into and matched with the protrusion of the chain plate (3-7) in another chain link (3-6), and the protrusion is arranged away from the middle of the push chain (3), and the middle of the push chain (3) is slidably connected in the roller track (4-1), and one side of the push chain (3) is slidably connected in the driving guide rail (7), and the chain link (3-6) on one side of the push chain (3) is connected to the end chain link (10), and the end chain link (10) is arranged away from the driving box (4), and the opening of the driving guide rail (7) is arranged toward the end chain link (10), and the other side of the push chain (3) is slidably connected in the storage guide rail (8).

7. A push chain lifting system for ladders according to claim 6, characterized in that: The inner wall of the roller guide groove (2-1) is provided with two chain guide grooves (2-2), the two chain guide grooves (2-2) are respectively arranged on both sides of the roller guide groove (2-1), the roller guide groove (2-1) is arranged vertically, and the ends of a plurality of guide columns (9) are inserted into the chain guide groove (2-2), and the other end of the guide column (9) is slidably matched with the chain plate (3-7).

8. A push chain lifting system for ladders according to claim 6, characterized in that: The power mechanism (5) comprises: a sprocket (5-1); a motor mounting seat (4-3) is provided on the side of the drive box (4); a motor is mounted on the motor mounting seat (4-3); an output shaft of the motor is fitted with a second bearing sleeve; the second bearing is mounted on the inner wall of the other side of the drive box (4); an end of the output shaft of the motor is fitted with the bearing sleeve; a sprocket (5-1) is mounted on the output shaft; the sprocket (5-1) is arranged in the drive box (4); the sprocket (5-1) is placed in a through slot and is meshedly connected with a push chain (3).

9. A push chain lifting system for ladders according to claim 8, characterized in that: The end surface of the drive box (4) is provided with a maintenance window (1-1), the maintenance window (1-1) is plugged into a window sealing plate (15), a guide plate (6) is mounted on the window sealing plate (15), the guide plate (6) is plugged into a sealing opening at the bottom of the roller track (4-1), a guide surface (61) is provided on the guide plate (6), and the guide surface (61) is coplanar with the bottom wall of the roller track (4-1).

10. A push chain lifting system for ladders according to claim 6, characterized in that: The mounting mechanism comprises: a mounting seat and a joint (11); the mounting seat is mounted on the top of the joint (11); a transverse U-shaped groove is formed on the end surface of the joint (11); the transverse U-shaped groove is plug-fitted with a second roller; the bottom of the joint (11) is in contact with another second roller; both side walls of the joint (11) are in contact with an end chain plate (10-1); each end chain plate (10-1) is connected with two second rollers; a second roller is mounted on the second roller; the second roller is arranged away from the end chain plate (10-1) and is slidably connected with the roller guide groove (2-1); the bottom of the end chain plate (10-1) is rotatably connected with the roller (3-5) at the end of the push chain 3.

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