A freight elevator for easy loading and unloading of goods and its usage method

Abstract

The present invention discloses a freight elevator and a method of using the freight elevator, which are convenient for loading and unloading goods, and relates to the technical field of freight elevators. The present invention includes a ladder shaft assembly, a lifting assembly, including a cable located inside the shaft, a pull plate fixed at one end of the cable and a pull rod fixed at the other end of the cable, a counterweight assembly, including a counterweight block located inside the shaft, a mounting frame sleeved in the middle of the counterweight block and a pull frame fixed at the upper end surface of the mounting frame, a cargo box assembly, and an auxiliary transport assembly. The present invention controls the slow movement of the intermittent blades driven by the reduction motor through the movement of the pressing plate on the transfer plate, thereby ensuring that the electric door will not close automatically and reducing the problem of squeezing of goods and staff. At the same time, the coordinated use of the cable, the movable tooth plate, the locking tooth plate and the positioning rack realizes the function of preventing the cargo box from falling through a cable, reducing the demand for cables, reducing the increase in costs, and reducing maintenance costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of freight elevators, and in particular relates to a freight elevator which is convenient for loading and unloading goods and a use method thereof. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building. Its car runs on at least two rows of rigid tracks that are perpendicular to the horizontal plane or have an inclination angle of less than 15° to the plumb line. The elevator is connected to the car and counterweight at both ends of the traction rope, which is wound around the traction wheel and the guide wheel. The traction motor drives the traction wheel to rotate after the speed is changed by the reducer. The traction force generated by the friction between the traction rope and the traction wheel is used to realize the lifting and lowering movement of the car and the counterweight to achieve the transportation purpose. At the same time, it can be seen from the existing public document CN114368663A-A freight elevator that can unload goods quickly that in order to facilitate the high-rise transportation of goods, corresponding freight elevators will be used.

[0003] Therefore, the current elevator door sends signals to the elevator control system through a sensor via a radio frequency signal or an infrared signal. The elevator control system controls the opening and closing of the elevator door according to different signals. Therefore, when there are a lot of goods inside the elevator bridge, when the staff puts the goods inside the elevator or moves them out, the elevator door is easy to close automatically without intermittent shielding of the sensing position on the elevator door, thereby affecting the efficiency of cargo loading and unloading. At the same time, it will squeeze the goods, causing damage to the elevator door and the goods, causing significant losses. Most elevators use a limiter to control the rope clamp to clamp the steel rope to achieve the effect of falling. When the elevator slides down quickly, it will drive the speed limiter to rotate quickly, so that the metal hook inside it moves outward, thereby clamping the gear on the side, so that the wheel cannot rotate, and then drive the rope clamp to clamp the steel rope to ensure that the elevator stops sliding down. However, the cable used in this method is the same as the cable used for traction, so it will increase the maintenance cost, and at the same time increase the installation cost, and reduce the maintenance efficiency of the staff. To this end, we provide a freight elevator that is easy to load and unload goods and a method of use to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a freight elevator which is convenient for loading and unloading goods and a method of using the same. By moving a pressing plate on a transfer plate, the reduction motor is controlled to drive the slow movement of intermittent blades, thereby ensuring that the electric door will not close automatically, thereby increasing the handling time of staff and reducing the squeezing of goods and staff. At the same time, the coordinated use of cables, movable tooth plates, locking tooth plates and positioning racks can achieve the function of preventing the cargo box from falling through a cable, thereby reducing the demand for cables, reducing cost increases, and reducing maintenance costs.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention provides a freight elevator which is convenient for loading and unloading goods, comprising a ladder shaft assembly, including a shaft, a lifting motor fixed at the top position outside the shaft, and four positioning racks fixed to the inner wall of the shaft and symmetrically arranged in pairs, a lifting wheel is fixed to the rotating shaft end of the lifting motor, a lifting assembly comprises a cable located inside the shaft, a pulling plate fixed to one end of the cable, and a pulling rod fixed to the other end of the cable, a pulling rope 1 is fixed to both ends of the pulling plate, a locking tooth plate meshed with the positioning rack is fixed to the other end of the pulling rope 1, a pulling rope 2 is fixed to both ends of the pulling rod, a movable tooth plate meshed with the positioning rack is fixed to the other end of the pulling rope 2, a counterweight assembly comprises a counterweight block located inside the shaft, a mounting frame sleeved at the middle position of the counterweight block, and a pulling frame fixed at the upper end surface position of the mounting frame, and the pulling plate The pull plate is located at the inner side of the pulling plate, and the side walls of the pulling plate close to the counterweight block are fixed with T-shaped strips, and the side walls of the T-shaped strips opposite to the teeth of the locking tooth plate are fixed with compression springs. The cargo box assembly includes a bridge box located inside the well, a lifting frame mounted on the surface side of the bridge box, and L-shaped plates fixed on two symmetrical side positions of the bridge box. The pull strip is located on the inner side of the lifting frame and connected to the top of the bridge box. The end surface of the movable tooth plate opposite to the L-shaped plate is fixed with connecting blocks, and the side walls of the connecting blocks are fixed with return springs that abut against the end surface of the L-shaped plate. The auxiliary transport assembly includes a transfer plate located inside the bridge box, a pressing plate located on the upper end surface of the transfer plate, and a reduction motor fixed at the rear position of the upper end of the pressing plate. Two intermittent blades arranged at the rear position of the upper end surface of the pressing plate are fixedly connected to the rotating shaft end of the reduction motor.

[0007] The present invention is further configured such that a lifting port and a rotating port are provided on the upper end surface of the shaft, and the rotating port is consistent with the upper and lower positions of the counterweight assembly, a buffer wheel is rotatably arranged inside the rotating port, a lifting wheel is fixed to the rotating shaft end of the lifting motor, one end of the cable passes through the rotating port, bypasses the upper surface positions of the buffer wheel and the lifting wheel, and passes through the inside of the lifting port.

[0008] The present invention is further configured such that the side wall of the shaft is provided with a plurality of floor openings which are evenly distributed linearly up and down, two floor doors which are symmetrically arranged left and right are provided inside the shaft at each floor opening, and floor rails which are slidably connected to the floor doors are fixed to the inner side walls of the shaft at the upper and lower positions of each floor opening.

[0009] The present invention is further configured such that both left and right side walls of the installation frame are provided with strip-shaped T-shaped openings, and both sides of the installation frame located inside the strip-shaped T-shaped openings are fixed with positioning rods, and the other end of the compression spring abuts against the side wall of the installation frame located at the strip-shaped T-shaped opening;

[0010] Rotating rollers for tightening the pull rope are fixed on the side walls of the installation frame on the same side as the strip T-shaped opening. Vertical openings are opened on the left and right side walls of the pulling frame. The pull rope passes through the corresponding vertical openings and around the rotating roller surface opposite to the strip T-shaped opening.

[0011] The present invention is further configured such that the T-shaped strip slides in the corresponding strip T opening, and the T-shaped strip is sleeved on the positioning rod through the positioning hole provided on the side wall;

[0012] A square opening is provided in the middle of the upper end surface of the pulling frame, and the cable passes through the square opening. The upper end surfaces of the pull plates on the left and right sides of the pulling frame are both fixed with springs abutting against the inner side surface of the pulling frame.

[0013] The present invention is further configured such that positioning T blocks at the same height as the L-shaped plate are fixed on both the left and right side walls of the bridge compartment, and the connecting block is slidably connected to the positioning T block via a T-shaped sliding opening provided on the side wall;

[0014] A through opening is provided in the middle of the upper end surface of the lifting frame, and the other end of the cable passes through the through opening. Both left and right side walls of the lifting frame located above the bridge compartment are provided with movable openings.

[0015] The present invention is further configured such that the upper end surfaces of the pull rods located on the left and right sides of the through-hole are fixed with springs two that abut against the top of the lifting frame, the left and right side walls of the lifting frame located between the L-shaped plate and the movable hole are fixed with guide rollers, and the side walls of the L-shaped plate corresponding to the reset spring are provided with guide holes, and one end of the pull rope two that passes through the movable hole bypasses the guide roller and passes through the inside of the guide hole;

[0016] Two electric car doors connected with the floor doors are arranged at the opening of the bridge car, and car rails are fixed on the side walls of the bridge car at the upper and lower ends of the electric car doors, and the electric car doors are slidably connected with the car rails.

[0017] The present invention is further configured such that two slide rails symmetrically arranged on the left and right sides are fixed to the bottom surface of the bridge compartment, the transfer plate is sleeved on the slide rails through a notch provided on the lower end surface, and the side walls of the transfer plate located inside the notch are rotatably connected with sliding wheels connected to the surface side of the slide rails;

[0018] A switch opening is provided in the middle of the upper end surface of the transfer plate, a button electrically connected to the reduction motor is provided at the bottom of the switch opening, and an abutment rod which matches the gap with the switch opening is fixed to the lower end surface of the pressing plate.

[0019] The present invention is further configured such that the left and right end surfaces of the pressing plate are both fixed with inclined blocks connected to the bottom surface of the interior of the bridge compartment, and the front portion of the upper end surface of the pressing plate is fixed with a pull rod;

[0020] The upper end surface of the transfer plate located in front of the switch port is provided with a limit hole, the lower end surface of the pressing plate is fixed with two limit rods which respectively match the clearance of the limit holes, and the lower end surface of the limit rods is fixed with an extrusion spring.

[0021] The present invention also provides a method for using a freight elevator that is convenient for loading and unloading goods, which is implemented through the following steps:

[0022] S1: Connect the entire device to an external power supply and control center to control the lifting motor to work. The lifting motor will drive the counterweight assembly and the cargo box assembly to move up and down through the pull rope. At this time, the cargo is moved to the bridge compartment and can be moved to the floor openings at different heights.

[0023] S2: After the goods are moved to the floor opening, the electric door is controlled to open, thereby driving the floor door to open at the same time. At this time, the transfer plate and the pressing plate are moved out from the inside of the bridge compartment, so that the goods can be moved to the pressing plate;

[0024] S3: After the transfer plate is moved out, it will drive the intermittent blade to move to the position of the electric door. Therefore, the downward movement of the pressing plate will control the reduction motor to work. Thus, through the intermittent interference of the intermittent blade, the electric door induction is controlled, so that the electric door is always in the open state.

[0025] S4: When the cargo box assembly and the counterweight assembly move quickly inside the shaft, the locking tooth plate will be pushed by the compression spring or the movable tooth plate will be pushed by the return spring, so that the locking tooth plate or the movable tooth plate will engage with the positioning rack, thereby limiting the cargo box assembly and the counterweight assembly and stabilizing their positions.

[0026] The present invention has the following beneficial effects:

[0027] Move the transfer plate and the pressing plate out from the inside of the bridge compartment, which will drive the reduction motor and the gap blades to move to the position of the electric compartment door. At this time, transfer the goods to the pressing plate, which will cause the pressing plate to move downward. At this time, the pressing plate will press the button through the abutment rod to control the reduction motor to work and slowly drive the gap blades to rotate, so that the sensor at the opening position of the bridge compartment can intermittently sense the existence of the gap blades, so that the electric compartment door is always in an open state, ensuring that the electric compartment door will not close automatically, thereby increasing the handling time of the staff and reducing the squeezing of the goods and staff.

[0028] When the lifting motor is damaged and the cable cannot be unwound or the cable breaks, the cargo box assembly and the counterweight assembly will move quickly inside the shaft, so that one of the pull rods or pull plates will not be pulled by the cable, and the locking tooth plate will be pushed by the compression spring or the movable tooth plate will be pushed by the return spring, so that the locking tooth plate or the movable tooth plate will engage with the positioning rack, thereby limiting the cargo box assembly and the counterweight assembly, so that the position of the cargo box can be stabilized immediately, and the function of preventing the cargo box from falling can be achieved by a cable, thereby reducing the demand for cables, reducing cost increases, and reducing maintenance costs.

[0029] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0031] Figure 1 It is an internal schematic diagram of the overall structure of the present invention.

[0032] Figure 2 It is a linkage structure diagram of the cargo box assembly and the auxiliary handling assembly in the present invention.

[0033] Figure 3 It is a combined diagram of the hoistway, lifting motor, landing door, positioning rack and buffer wheel in the present invention.

[0034] Figure 4 It is a combination diagram of the lifting component, the cargo box component and the auxiliary handling component in the present invention.

[0035] Figure 5 It is a structural diagram of the cable, pull plate, pull rod, locking tooth plate and movable tooth plate in the present invention.

[0036] Figure 6 It is a structural diagram of the counterweight block, the installation frame and the pulling frame in the present invention.

[0037] Figure 7 It is a structural diagram of the bridge compartment, lifting frame, positioning T-block, electric compartment door and L-shaped plate in the present invention.

[0038] Figure 8 It is a structural diagram of the transfer plate, the pressing plate and the reduction motor in the present invention.

[0039] Fig. 9 It is a structural diagram of the pressing plate and the reduction motor in the present invention.

[0040] Fig.10 It is a structural diagram of the transfer plate in the present invention.

[0041] Fig.11 It is the internal structure diagram of the well in the present invention.

[0042] Fig.12 It is an external schematic diagram of the overall structure of the present invention.

[0043] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0044] 100-ladder shaft assembly, 101-hoistway, 101a-floor opening, 101b-lifting opening, 101c-rotating opening, 102-lifting motor, 102a-lifting wheel, 103-floor door, 103a-floor rail, 104-positioning rack, 105-buffer wheel, 200-lifting assembly, 201-cable, 202-pull plate, 202a-spring one, 202b-pull rope one, 203-pull strip, 203a-spring two, 203b-pull rope two, 204-locking tooth plate, 204a-T-shaped strip plate, 204a-1-positioning hole, 204b-compression spring, 205-movable tooth plate, 205a-connecting block, 205a-1-T-shaped sliding port, 205b-reset spring, 300-counterweight assembly, 301-counterweight block, 302-installation frame, 302a-strip T port, 302b - positioning rod, 302c- rotating roller, 303- pulling frame, 303a- square opening, 303b- vertical opening, 400- cargo box assembly, 401- bridge compartment, 401a- slide rail, 401b- compartment rail, 402- lifting frame, 402a- through opening, 402b- movable opening, 402c- guide roller, 403- positioning T block, 404- electric compartment door, 405- L-shaped plate, 405a- guide Toward hole, 500-auxiliary transport component, 501-transfer plate, 501a-recess, 501b-sliding wheel, 501c-switch mouth, 501d-limiting hole, 501e-button, 502-pressing plate, 502a-pull rod, 502b-tilting block, 502c-abutment rod, 502d-limiting rod, 502d-1-extrusion spring, 503-reduction motor, 503a-intermittent blade. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0046] See also Figure 1, Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig.12 , which is the first embodiment of the present invention, provides a freight elevator that is convenient for loading and unloading goods. By moving the pressing plate 502 on the transfer plate 501, the reduction motor 503 is controlled to drive the intermittent blade 503a to move slowly, ensuring that the electric door 404 will not close automatically, thereby increasing the handling time of the staff and reducing the squeezing of the goods and the staff. At the same time, the coordinated use of the cable 201, the movable tooth plate 205, the locking tooth plate 204 and the positioning rack 104 can realize the function of preventing the cargo box from falling through a cable 201, reducing the demand for the cable 201, reducing the cost increase, and reducing the maintenance cost.

[0047] Specifically, the ladder shaft assembly 100 includes a shaft 101, a lifting motor 102 fixed at the top position of the shaft 101, and four positioning racks 104 fixed to the inner wall of the shaft 101 and arranged symmetrically in pairs. The lifting assembly 200 includes a cable 201 located inside the shaft 101, a pull plate 202 fixed at one end of the cable 201, and a pull rod 203 fixed at the other end of the cable 201. The counterweight assembly 300 includes a counterweight block 301 located inside the shaft 101, and a pull plate 202 mounted in the middle of the counterweight block 301. The cargo box assembly 400 includes a bridge compartment 401 located inside the well 101, a lifting frame 402 sleeved on the surface of the bridge compartment 401, and an L-shaped plate 405 fixed on two symmetrical side positions of the bridge compartment 401; and an auxiliary transport assembly 500, including a transfer plate 501 located inside the bridge compartment 401, a pressing plate 502 located on the upper end of the transfer plate 501, and a reduction motor 503 fixed on the upper rear portion of the pressing plate 502;

[0048] Through the arrangement and use of the above-mentioned structure, the lifting motor 102 moves the cable 201, so that the cable 201 moves the pull plate 202 and the pull rod 203 up and down, so that the pull plate 202 will drive the pull frame 303 to move up and down, and the pull rod 203 will drive the lifting frame 402 to move, thereby controlling the counterweight block 301 and the bridge compartment 401 to slide along the shaft 101, so as to realize the high-altitude transportation of goods, and at the same time, move the transfer plate 501 out of the interior of the bridge compartment 401, put all the goods on the transfer plate 501, and push the transfer plate 501 into the interior of the bridge compartment 401, so as to facilitate the rapid transportation of goods in the bridge compartment 401.

[0049] according to Figure 5 , Figure 6 , Figure 7 and Figure 8, a lifting wheel 102a is fixed to the rotating shaft end of the lifting motor 102, a pull rope 202b is fixed to both ends of the pull plate 202, and a locking tooth plate 204 meshing with the positioning rack 104 is fixed to the other end of the pull rope 202b, a pull rope 203b is fixed to both ends of the pull rod 203, and a movable tooth plate 205 meshing with the positioning rack 104 is fixed to the other end of the pull rope 203b, the pull plate 202 is located at the inner side of the pulling plate, and a T-shaped strip plate 204a is fixed to the side wall of the pull plate 202 close to the counterweight block 301, and a compression spring 204b is fixed to the side wall of the T-shaped strip plate 204a opposite to the tooth mouth of the locking tooth plate 204, the pull rod 203 is located at the inner side of the lifting frame 402 and connected to the top of the bridge compartment 401, and the movable tooth plate 205 is relative to the L-shaped plate 405. The end faces are all fixed with connecting blocks 205a, and the side walls of the connecting blocks 205a are all fixed with return springs 205b that abut against the end faces of the L-shaped plates 405. The two intermittent blades 503a arranged at the rear part of the upper end face of the pressing plate 502 are fixedly connected to the rotating shaft end of the reduction motor 503. When the lifting motor 102 can work normally, the lifting motor 102 will pull the cable 201 through the lifting wheel 102a, so that the cable 201 can pull the pull plate 202 and the pull bar 203 at the same time, thereby pulling the movable tooth plate 205 and the locking tooth plate 204, thereby compressing the return spring 205b and the compression spring 204b, and disengaging the movable tooth plate 205 and the locking tooth plate 204 from the positioning tooth plate, thereby ensuring the stable operation of the counterweight assembly 300 and the cargo box assembly 400;

[0050] When the above-mentioned structure is used, the transfer plate 501 and the pressing plate 502 are moved out from the interior of the bridge compartment 401, which will drive the reduction motor 503 and the gap blades to move to the position of the electric compartment door 404. At this time, the goods are transferred to the pressing plate 502, which will cause the pressing plate 502 to move downward. At this time, the pressing plate 502 will press the button 501e through the abutment rod 502c to control the reduction motor 503 to work and slowly drive the gap blades to rotate, so that the sensor at the opening position of the bridge compartment 401 can intermittently sense the existence of the gap blades, so that the electric compartment door 404 is always in an open state, ensuring that the electric compartment door 404 will not close automatically, thereby increasing the handling time of the staff and reducing the situation where the goods and staff are squeezed;

[0051] At the same time, when the lifting motor 102 is damaged and cannot unwind the cable 201 or the cable 201 is broken, the counterweight assembly 300 and the cargo box assembly 400 will slide up and down quickly. When the weight of the cargo box assembly 400 is greater than the weight of the counterweight assembly 300, the counterweight assembly 300 moves up and the cargo box assembly 400 moves down. At the same time, the cable 201 will no longer pull the pull bar 203, thereby not pulling the movable tooth plate 205. At this time, the return spring 205b pushes the movable tooth plate 205 and the positioning tooth plate 205. The bars 104 are engaged, thereby controlling the position stability of the counterweight assembly 300 and the cargo box assembly 400. When the weight of the cargo box assembly 400 is less than the weight of the counterweight assembly 300, the counterweight assembly 300 moves down and the cargo box assembly 400 moves up, so that the cable 201 does not pull the pull plate 202, thereby not pulling the locking tooth plate 204, and thus the compression spring 204b will push the locking tooth plate 204 to engage with the positioning rack 104, thereby controlling the position stability of the counterweight assembly 300 and the cargo box assembly 400.

[0052] Further, according to Figure 3 and Fig.11 It can be seen that a lifting port 101b and a rotating port 101c are provided on the upper end surface of the shaft 101, and the rotating port 101c is consistent with the upper and lower positions of the counterweight assembly 300. A buffer wheel 105 is rotatably arranged inside the rotating port 101c, and a lifting wheel 102a is fixed to the rotating shaft end of the lifting motor 102. One end of the cable 201 passes through the rotating port 101c, bypasses the upper surface positions of the buffer wheel 105 and the lifting wheel 102a, and passes through the inside of the lifting port 101b. Since the cable 201 bypasses the buffer wheel 105 and the lifting wheel 102a, the lifting wheel 102a will drive the cable 201 on one side to move up and the cable 201 on the other side to slide down after rotation, and the buffer wheel 105 reduces the friction on the cable 201.

[0053] Further, according to Figure 3 and Figure 7 The side wall of the shaft 101 is provided with a plurality of floor openings 101a which are evenly distributed linearly up and down. Two floor doors 103 which are symmetrically arranged left and right are arranged inside the shaft 101 at each floor opening 101a. Floor rails 103a which are slidably connected to the floor door 103 are fixed to the inner side walls of the shaft 101 at the upper and lower positions of each floor opening 101a. The floor door 103 can slide along the floor rails 103a. Two electric car doors 404 which are connected to the floor door 103 are arranged at the opening of the bridge car 401. Carriage rails 401b are fixed to the side walls of the bridge car 401 at the upper and lower ends of the electric car door 404. The electric car door 404 is slidably connected to the car rails 401b. When the electric car door 404 is opened, the electric car door 404 will drive the floor door 103 to slide with it, so as to ensure that the electric car door 404 and the floor door 103 can work synchronously.

[0054] It should be noted that the electrical structures used are all controlled by an external electric control box. At the same time, the actuator set at the opening position of the bridge compartment 401 and the electric compartment door 404 work synchronously through the electric control box, and the electrical structures used are all powered by an external power supply. Example 2

[0055] See also Figure 5 and Figure 7 On the basis of Example 1, this embodiment uses the sliding cooperation between the positioning T block 403 and the T-shaped sliding port 205a-1, and the movable tooth plate 205 will support and limit the bridge compartment 401 through the positioning T block 403, so as to control the stable position of the bridge compartment 401.

[0056] Specifically, a positioning T-block 403 at the same height as the L-shaped plate 405 is fixed on the left and right side walls of the bridge compartment 401, and the connecting block 205a is slidably connected to the positioning T-block 403 through a T-shaped sliding opening 205a-1 opened on the side wall. A through opening 402a is opened in the middle of the upper end surface of the lifting frame 402, and the other end of the cable 201 passes through the through opening 402a. The left and right side walls of the lifting frame 402 located above the bridge compartment 401 are both provided with movable openings 402b, which are located at the through openings. The upper end surfaces of the pull rods 203 on the left and right sides of the through-opening 402a are fixed with springs 203a abutting against the top of the lifting frame 402, and the left and right side walls of the lifting frame 402 located between the L-shaped plate 405 and the movable opening 402b are fixed with guide rollers 402c, and the side walls of the L-shaped plate 405 corresponding to the reset spring 205b are provided with guide holes 405a, and the end of the pull rope 203b passing through the movable opening 402b bypasses the guide roller 402c and passes through the inside of the guide hole 405a.

[0057] Through the setting and use of the above-mentioned structure, when the cable 201 does not pull the pull rod 203, the spring 203a will be reconnected with the bridge compartment 401 together with the pull rod 203, thereby loosening the pull rope 203b, allowing the movable tooth plate 205 to slide and engage with the positioning rack 104. When the movable tooth plate 205 moves, it will drive the positioning T block 403 to move along the T-shaped sliding mouth 205a-1. Therefore, after the movable tooth plate 205 engages with the positioning rack 104, the movable tooth plate 205 will support and limit the bridge compartment 401 through the positioning T block 403, thereby controlling the position of the bridge compartment 401 to be stable. Example 3

[0058] See also Figure 5 and Figure 6 On the basis of Example 1, this embodiment uses the T-shaped strip plate 204a and the strip T-mouth 302a in combination to ensure the stability of the position of the counterweight assembly 300.

[0059] Specifically, the left and right side walls of the installation frame 302 are each provided with a strip T-shaped opening 302a, and a positioning rod 302b is fixed to the side of the installation frame 302 located inside the strip T-shaped opening 302a. The other end of the compression spring 204b is in contact with the side wall of the installation frame 302 located at the position of the strip T-shaped opening 302a. A rotating roller 302c for tightening the pull rope 202b is fixed to the side wall of the installation frame 302 on the same side as the strip T-shaped opening 302a. The left and right side walls of the pulling frame 303 are each provided with a vertical opening 303b, and the pull rope 202b is pulled from the corresponding vertical opening 303b. Toward opening 303b, and bypass from the surface side of the rotating roller 302c opposite to the strip T opening 302a, the T-shaped strip plate 204a slides in the corresponding strip T opening 302a, the T-shaped strip plate 204a is sleeved on the positioning rod 302b through the positioning hole 204a-1 opened on the side wall, and a square opening 303a is opened through the middle position of the upper end surface of the pulling frame 303, and the cable 201 passes through the position of the square opening 303a, and the upper end surfaces of the pulling plates 202 located on the left and right sides of the pulling frame 303 are fixed with springs 202a that abut against the inner side surface of the pulling frame 303.

[0060] By setting and using the above-mentioned structure, when the locking tooth plate 204 is not pulled, the compression spring 204b at this time will push the locking tooth plate 204 to move in the direction of the positioning rack 104, so that the positioning rack 104 will drive the T-shaped strip plate 204a to slide along the strip T-mouth 302a. Therefore, after the positioning rack 104 limits the mounting frame 302 and supports and limits the counterweight block 301, the T-shaped strip plate 204a will slide along the positioning rod 302b through the positioning hole 204a-1, so as to avoid the compression spring 204b from being compressed and bent, and when the pull plate 202 is not pulled by the cable 201, the spring 1 202a will push the pull rope to connect with the bottom of the mounting frame 302. Example 4

[0061] See also Figure 8 , Fig. 9 and Fig.10 On the basis of Example 1, this embodiment uses the limit rod 502d and the extrusion spring 502d-1 in combination to facilitate the control of the position reset of the pressing plate 502. At the same time, the pressing plate 502 drives the sliding of the tilting block 502b, which can facilitate the handling of goods.

[0062] Specifically, two slide rails 401a are fixed to the bottom surface of the bridge compartment 401 and are symmetrically arranged. The transfer plate 501 is sleeved on the slide rail 401a through a notch 501a provided on the lower end surface. The side walls of the transfer plate 501 located inside the notch 501a are rotatably connected with sliding wheels 501b connected to the surface side of the slide rail 401a. A switch port 501c is provided in the middle position of the upper end surface of the transfer plate 501. A button 501e electrically connected to the reduction motor 503 is provided at the bottom of the switch port 501c. The lower end surface of the pressing plate 502 is fixed. There is an abutment rod 502c that is clearance-matched with the switch port 501c; the left and right end faces of the pressing plate 502 are fixed with inclined blocks 502b that are connected to the inner bottom surface of the bridge compartment 401, and a pull rod 502a is fixed to the front part of the upper end face of the pressing plate 502, and a limiting hole 501d is provided on the upper end face of the transfer plate 501 located in front of the switch port 501c, and two limiting rods 502d that are clearance-matched with the limiting holes 501d are fixed to the lower end face of the pressing plate 502, and an extrusion spring 502d-1 is fixed to the lower end face of the limiting rod 502d.

[0063] By setting and using the above structure, when the pressing plate 502 is driven to move by the pull rod 502a, the pressing plate 502 will drive the transfer plate 501 to move through the limit rod 502d, so as to move it out of the bridge compartment 401. At the same time, when the goods are transported to the upper end surface of the pressing plate 502, the pressing plate 502 will be compressed, so that the pressing plate 502 will drive the abutment rod 502c to press the button 501e, and control the reduction motor 503 to work, and will stop the limit rod 50 2d compresses the extrusion spring 502d-1, and after the goods are moved away from the upper position of the pressing plate 502, the pressing plate 502 is not pushed, and the extrusion spring 502d-1 will push the limit rod 502d to move upward, thereby resetting the pressing plate 502. At the same time, after the pressing plate 502 is moved out from the internal position of the bridge compartment 401, the tilting block 502b will also be driven to move, and at this time, heavier goods can be easily slid from the position of the tilting block 502b to the upper position of the pressing plate 502.

[0064] The present invention also provides a method for using a freight elevator that is convenient for loading and unloading goods, which is implemented through the following steps:

[0065] S1: Connect the entire device to an external power source and a control center to control the lifting motor 102 to work, so that the lifting motor 102 drives the counterweight assembly 300 and the cargo box assembly 400 to move up and down through the pull rope. At this time, the cargo is transported to the bridge compartment 401, and the cargo can be moved to the floor opening 101a at different heights;

[0066] S2: After the cargo moves to the position of the landing opening 101a, the electric door 404 is controlled to open, thereby the electric door 404 drives the landing door 103 to open at the same time, and at this time the transfer plate 501 and the pressing plate 502 are moved out from the interior of the bridge compartment 401, so that the cargo can be transported to the pressing plate 502;

[0067] S3: After the transfer plate 501 is moved out, the intermittent blade 503a is driven to move to the position of the electric door 404, so the pressing plate 502 moves downward to control the reduction motor 503 to work, thereby controlling the induction of the electric door 404 through the intermittent interference of the intermittent blade 503a, so that the electric door 404 is always in the open state;

[0068] S4: When the cargo box assembly 400 and the counterweight assembly 300 move quickly inside the shaft 101, the locking tooth plate 204 will be pushed by the compression spring 204b or the movable tooth plate 205 will be pushed by the return spring 205b, so that the locking tooth plate 204 or the movable tooth plate 205 will engage with the positioning rack 104, thereby limiting the cargo box assembly 400 and the counterweight assembly 300 and stabilizing their positions.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A freight elevator that is convenient for loading and unloading goods, characterized in that: include, A ladder shaft assembly (100) comprises a shaft (101), a lifting motor (102) fixed at the top end of the shaft (101), and four positioning racks (104) fixed to the inner wall of the shaft (101) and arranged symmetrically in pairs, wherein a lifting wheel (102a) is fixed to the end of the rotating shaft of the lifting motor (102); A lifting assembly (200) comprises a cable (201) located inside a hoistway (101), a pull plate (202) fixed at one end of the cable (201), and a pull bar (203) fixed at the other end of the cable (201), wherein pull rope 1 (202b) is fixed at both ends of the pull plate (202), and a locking tooth plate (204) meshing with a positioning rack (104) is fixed at the other end of the pull rope 1 (202b), and pull rope 2 (203b) is fixed at both ends of the pull bar (203), and a movable tooth plate (205) meshing with the positioning rack (104) is fixed at the other end of the pull rope 2 (203b); A counterweight assembly (300) comprises a counterweight block (301) located inside the well (101), a mounting frame (302) sleeved in the middle of the counterweight block (301), and a pulling frame (303) fixed to the upper end surface of the mounting frame (302), wherein the pulling plate (202) is located inside the pulling plate, a T-shaped strip plate (204a) is fixed to the side wall of the pulling plate (202) close to the counterweight block (301), and a compression spring (204b) is fixed to the side wall of the T-shaped strip plate (204a) opposite to the tooth opening of the locking tooth plate (204); A cargo box assembly (400) comprises a bridge box (401) located inside a shaft (101), a lifting frame (402) mounted on the surface side of the bridge box (401), and an L-shaped plate (405) fixed on two symmetrical side positions of the bridge box (401), wherein the pull bar (203) is located inside the lifting frame (402) and connected to the top of the bridge box (401), a connecting block (205a) is fixed to the end surface of the movable tooth plate (205) opposite to the L-shaped plate (405), and a return spring (205b) abutting against the end surface of the L-shaped plate (405) is fixed to the side wall of the connecting block (205a); and, The auxiliary transport assembly (500) comprises a transfer plate (501) located inside the bridge compartment (401), a pressing plate (502) located on the upper end surface of the transfer plate (501), and a reduction motor (503) fixed to the rear portion of the upper end of the pressing plate (502), wherein two intermittent blades (503a) provided on the rear portion of the upper end surface of the pressing plate (502) are fixedly connected to the rotating shaft end of the reduction motor (503); Two slide rails (401a) are fixed to the bottom surface of the interior of the bridge compartment (401) and are symmetrically arranged on both sides. The transfer plate (501) is sleeved on the slide rails (401a) through a notch (501a) provided on the lower end surface. The side walls of the transfer plate (501) located inside the notch (501a) are rotatably connected to the slide wheels (501b) connected to the surface of the slide rails (401a). A switch opening (501c) is provided in the middle of the upper end surface of the transfer plate (501), a button (501e) electrically connected to the reduction motor (503) is provided at the bottom of the switch opening (501c), and an abutment rod (502c) that is gap-matched with the switch opening (501c) is fixed to the lower end surface of the pressing plate (502); The left and right end surfaces of the pressing plate (502) are both fixed with inclined blocks (502b) connected to the inner bottom surface of the bridge compartment (401), and the front portion of the upper end surface of the pressing plate (502) is fixed with a pull rod (502a); The upper end surface of the transfer plate (501) located in front of the switch port (501c) is provided with a limit hole (501d), and the lower end surface of the pressing plate (502) is fixed with two limit rods (502d) respectively matching the limit holes (501d) with clearances, and the lower end surface of the limit rods (502d) is fixed with a compression spring (502d-1).

2. A freight elevator for convenient loading and unloading of goods according to claim 1, characterized in that: The upper end surface of the hoistway (101) is provided with a lifting opening (101b) and a rotating opening (101c), and the rotating opening (101c) is aligned with the upper and lower positions of the counterweight assembly (300). A buffer wheel (105) is rotatably arranged inside the rotating opening (101c), and a lifting wheel (102a) is fixed to the rotating shaft end of the lifting motor (102). One end of the cable (201) passes through the rotating opening (101c), bypasses the upper surface positions of the buffer wheel (105) and the lifting wheel (102a), and passes through the inside of the lifting opening (101b).

3. A freight elevator for convenient loading and unloading of goods according to claim 1, characterized in that: The side wall of the shaft (101) is provided with a plurality of floor openings (101a) evenly distributed in an upper and lower linear manner, and the interior of the shaft (101) at each floor opening (101a) is provided with two floor doors (103) symmetrically arranged on the left and right, and the inner side wall of the shaft (101) at the upper and lower positions of each floor opening (101a) is fixed with a floor rail (103a) slidably connected to the floor door (103).

4. A freight elevator for convenient loading and unloading of goods according to claim 1, characterized in that: The left and right side walls of the installation frame (302) are both provided with a strip-shaped T-shaped opening (302a), and a positioning rod (302b) is fixed to the side of the installation frame (302) located inside the strip-shaped T-shaped opening (302a), and the other end of the compression spring (204b) is in contact with the side wall of the installation frame (302) located at the position of the strip-shaped T-shaped opening (302a); A rotating roller (302c) for tightening a pull rope (202b) is fixed on the side wall of the installation frame (302) on the same side as the strip T-shaped opening (302a), and vertical openings (303b) are opened on the left and right side walls of the pulling frame (303). The pull rope (202b) passes through the corresponding vertical openings (303b) and around the surface of the rotating roller (302c) opposite to the strip T-shaped opening (302a).

5. A freight elevator for convenient loading and unloading of goods according to claim 4, characterized in that: The T-shaped strip (204a) slides in the corresponding strip-shaped T-port (302a), and the T-shaped strip (204a) is sleeved on the positioning rod (302b) through a positioning hole (204a-1) opened on the side wall; A square opening (303a) is provided in the middle of the upper end surface of the pulling frame (303), and the cable (201) passes through the square opening (303a). The upper end surfaces of the pulling plates (202) on the left and right sides of the pulling frame (303) are fixed with springs 1 (202a) that abut against the inner side surface of the pulling frame (303).

6. A freight elevator for convenient loading and unloading of goods according to claim 3, characterized in that: A positioning T-block (403) at the same height as the L-shaped plate (405) is fixed on both the left and right side walls of the bridge compartment (401), and the connecting block (205a) is slidably connected to the positioning T-block (403) via a T-shaped sliding opening (205a-1) provided on the side wall; A through opening (402a) is provided in the middle of the upper end surface of the lifting frame (402), and the other end of the cable (201) passes through the through opening (402a). The left and right side walls of the lifting frame (402) above the bridge compartment (401) are both provided with movable openings (402b).

7. A freight elevator for convenient loading and unloading of goods according to claim 6, characterized in that: The upper end surfaces of the pull rod (203) located on the left and right sides of the through opening (402a) are fixed with spring 2 (203a) that abuts against the top of the lifting frame (402), and the left and right side walls of the lifting frame (402) located between the L-shaped plate (405) and the movable opening (402b) are fixed with guide rollers (402c), and the side walls of the L-shaped plate (405) corresponding to the reset spring (205b) are provided with guide holes (405a), and one end of the pull rope 2 (203b) that passes through the movable opening (402b) bypasses the guide roller (402c) and passes through the inside of the guide hole (405a); Two electric car doors (404) connected to the landing door (103) are arranged at the opening of the bridge car (401), and car rails (401b) are fixed on the side walls of the bridge car (401) at the upper and lower ends of the electric car doors (404), and the electric car doors (404) are slidably connected to the car rails (401b).

8. A method for using a freight elevator that is convenient for loading and unloading goods, characterized in that: The freight elevator for convenient loading and unloading of goods as claimed in claim 7 is implemented by the following steps: S1: The entire device is connected to an external power source and a control center to control the lifting motor (102) to work, whereby the lifting motor (102) drives the counterweight assembly (300) and the cargo box assembly (400) to move in an up-and-down direction through a pull rope, and at this time, the cargo is transported to the bridge compartment (401), and the cargo can be moved to the floor opening (101a) at different heights; S2: After the cargo is moved to the position of the landing opening (101a), the electric compartment door (404) is controlled to open, thereby the electric compartment door (404) drives the landing door (103) to open at the same time, and at this time the transfer plate (501) and the pressing plate (502) are moved out from the interior of the bridge compartment (401), so that the cargo can be transported to the pressing plate (502); S3: After the transfer plate (501) is moved out, it drives the intermittent blade (503a) to move to the position of the electric door (404), so the pressing plate (502) moves downward to control the reduction motor (503) to work, thereby controlling the induction of the electric door (404) through the intermittent interference of the intermittent blade (503a), so that the electric door (404) is always in an open state; S4: When the cargo box assembly (400) and the counterweight assembly (300) move rapidly inside the shaft (101), the locking tooth plate (204) is pushed by the compression spring (204b) or the movable tooth plate (205) is pushed by the return spring (205b), so that the locking tooth plate (204) or the movable tooth plate (205) is engaged with the positioning rack (104), thereby limiting the cargo box assembly (400) and the counterweight assembly (300) and stabilizing their positions.

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