CN115010053B - Loading and unloading vehicle for elevator - Google Patents

Abstract

The invention discloses a loading and unloading vehicle for an elevator, which comprises an objective table, a counterweight table and handrails. The objective table and the handrail are respectively arranged at two opposite ends of the counterweight table, and universal wheels are arranged below the counterweight table. The objective table can move up and down relative to the counterweight table and is used for placing objects to be loaded and unloaded. The counterweight table is used for placing a counterweight block so as to keep balance of the elevator with the loading and unloading vehicle. According to the elevator loading and unloading device, the universal wheels are arranged on the counterweight table, the objective table is arranged at the front end of the universal wheels, and the objective table can move up and down relative to the counterweight table, so that when an object to be loaded and unloaded enters and exits the elevator car, the whole elevator loading and unloading car does not exert larger pressure on the sill and the elevator car frame, the elevator car is prevented from excessively inclining due to uneven weight distribution in the process of loading and unloading the object to be loaded and exiting, stressed components such as the sill and the guide shoe are damaged, and the service performance and the service life of the elevator and the elevator car are improved. In addition, as the object to be unloaded is placed at one end of the elevator loading and unloading vehicle, rollover is easy to occur.

Description

Loading and unloading vehicle for elevator

Technical Field

The invention relates to the technical field of loading and unloading equipment, in particular to a loading and unloading car for an elevator.

Background

At present, people often adopt the mode that the shallow is directly pushed in and is released when elevator car loads and unloads the heavy object, but when the weight of loading and unloading the heavy object is greater than the quarter of the rated load of elevator, and does not exceed the rated load, the following problem often appears:

1. The cart is directly pushed in and pushed out, the sill and the car frame are easy to deform under stress, and deformation of the elevator door and guide rail displacement can be caused.

2. The mode of pushing in and pushing out the cart directly is frequently adopted, so that the fatigue limit of the car frame component is exceeded due to concentrated load, the service life of the elevator is lost, the maintenance times are high, and the cost is high.

3. The trolley can only slowly enter the car, if the entering speed is too high, unbalanced load is easily caused, so that the stretching of the steel wire rope is too large (more than 50 mm), the leveling error is caused, and the elevator stops running.

Therefore, how to improve the technical defects existing in the prior art is a problem to be solved by the person skilled in the art.

Disclosure of Invention

The invention aims to provide a loading and unloading vehicle for an elevator, which can not directly apply pressure to an elevator car when loading and unloading objects to be loaded and unloaded, so that the stress deformation of a sill and a car frame is avoided, and the service life of the elevator is prolonged.

The technical scheme provided by the invention is as follows:

A lift truck for an elevator, comprising:

Objective table, counter weight table and handrail;

the object stage and the handrails are respectively arranged at two opposite ends of the counterweight table, and universal wheels are arranged below the counterweight table;

The object stage can move up and down relative to the counterweight table and is used for placing objects to be loaded and unloaded;

the counterweight table is used for placing a counterweight block so as to keep balance of the elevator loading and unloading vehicle.

In some embodiments, the counterweight table is far away from one side of the universal wheel, two upright posts are arranged at one end of the counterweight table, which faces the objective table, and the two upright posts are symmetrically distributed in the two opposite side areas of the counterweight table; and

The objective table is far away from one side of the universal wheel, and towards one end of the counterweight table is provided with a butt plate, and the butt plate is provided with a chute matched with the upright post in a butt joint mode, so that the objective table moves up and down along the length direction of the upright post.

In some embodiments, the number of the sliding grooves is one, the sliding grooves are arranged on one side of the butt plate facing the counterweight table, and the two upright posts are respectively positioned on two side edges of the sliding grooves.

In some embodiments, the lift truck further comprises:

and the lifting device is fixed on the counterweight table and is used for driving the objective table to move up and down along the length direction of the upright post.

In some embodiments, the lifting device comprises a lifting assembly, an elastic member, and a pull rod;

the lifting assembly is fixed on one side of the counterweight table, which is far away from the universal wheel, faces one end of the objective table and is positioned at the centers of the two upright posts, and the chute extends towards the lifting assembly to form a first abutting table which abuts against one end of the lifting assembly, which is far away from the counterweight table;

The counterweight table is arranged at one side far away from the universal wheel, and a fixed support is arranged at the area close to the lifting assembly and used for fixing the elastic piece;

The pull rod is fixed on the counterweight table, one end of the pull rod is provided with a second abutting table which abuts against the elastic piece, and one end of the pull rod away from the abutting table extends to one end of the counterweight table, which is provided with the handrail;

when the user operates the pull rod to press down, the lifting assembly drives the objective table to ascend;

When the user operates the pull rod to lift, the lifting assembly drives the objective table to descend.

In some embodiments, a pedal is provided at an end of the pull rod remote from the abutment.

In some embodiments, the counterweight table includes a main plate and a conveyor;

The universal wheel is arranged on the main board, one side, away from the universal wheel, of the main board is provided with a fixing groove for fixing the conveying device, and the conveying device is used for driving the balancing weight to move along the length direction of the main board so that the elevator loading and unloading vehicle is balanced.

In some embodiments, the conveying device comprises a driving wheel, a driven wheel, a transmission chain and a conveying belt;

the driving wheel and the driven wheel are rotatably fixed in the fixed groove through a rotating shaft, and the transmission chain is sleeved on the driving wheel and the driven wheel, so that the driven wheel and the driving wheel synchronously rotate;

the transmission belt is sleeved on the transmission chain and is used for driving the balancing weight and the transmission chain to synchronously move.

In some embodiments, a handle is disposed at one end of the rotating shaft penetrating through the driving wheel, and the user rotates the handle to drive the driving wheel to rotate, so as to drive the balancing weight to move along the length direction of the main board.

In some embodiments, the stage comprises two support cantilevers and a link plate connecting the two support cantilevers, the link plate for movably fixing the two support cantilevers to the counterweight stage;

the lower end surfaces of the two supporting cantilevers are obliquely arranged, and one end of each supporting cantilever far away from the butt joint plate is higher than one end of each supporting cantilever fixed to the butt joint plate.

The invention has the technical effects that:

1. In this patent, through locating the universal wheel counter weight platform and making the objective table be located the universal wheel front end, and the objective table can reciprocate relatively the counter weight platform, when making to wait to load and unload the thing business turn over car, the whole lift can not exert great pressure to sill and sedan-chair frame with the loading and unloading car, avoid the car to wait to load and unload the in-process that the thing business turn over, because of the unequal distribution of weight excessively incline, damage stressed parts such as sill, guide shoe, improved the performance and the life-span of elevator and car. In addition, as the object to be unloaded is placed at one end of the elevator loading and unloading vehicle, rollover is easy to occur. Moreover, this patent has set up the universal wheel, has improved the mobility of lift truck for the elevator greatly for the practicality of lift truck for the elevator obtains promoting.

2. In this patent, the one end that the butt platform was kept away from to the pull rod is equipped with a footboard, and the user can be stepped on or lift up this footboard with the foot and realize controlling jack-up subassembly, convenient operation, swift, and work efficiency improves greatly.

3. In this patent, through setting up conveyer to make the user drive conveyer operation through turning handle, thereby adjust the balancing weight and wait to load and unload the distance between the thing, make the lift truck for the elevator can be in balanced state, easy operation and convenient, the practicality is strong, and work efficiency improves greatly.

Drawings

The invention is described in further detail below with reference to the attached drawings and detailed description:

fig. 1 is a schematic view of a structure in which a loading/unloading car for an elevator loaded with an object to be loaded/unloaded does not enter a car;

Fig. 2 is a schematic view of a structure in which a loading/unloading car portion for an elevator loaded with an object to be loaded/unloaded enters a car, provided by the invention;

Fig. 3 is a plan view of the lift truck provided by the present invention;

FIG. 4 is a top view of a main panel and armrest provided by the present invention;

FIG. 5 is a top view of a load station provided by the present invention;

FIG. 6 is a front view of a lifting device provided by the present invention;

Fig. 7 is a schematic perspective view of a conveying device according to the present invention.

Reference numerals illustrate:

100. an objective table; 110. supporting the cantilever; 120. an abutting plate; 121. a chute; 122. a first abutment;

200. A counterweight table; 210. a main board; 211. a universal wheel; 212. a column; 213. a fixed support; 214. a fixing groove; 220. a transfer device; 221. a driving wheel; 222. driven wheel; 223. a drive chain; 224. a conveyor belt; 225. a rotating shaft; 226. a handle; 227. a roller;

300. an armrest;

400. An object to be loaded and unloaded;

500. Balancing weight;

600. A lifting device; 610. a lifting assembly; 620. an elastic member; 630. a pull rod; 631. a second abutment; 632. a pedal;

700. And a car.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

For simplicity of the drawing, only the parts relevant to the invention are schematically shown in each drawing, and they do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In this context, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the embodiment shown in the drawings, indications of orientation (such as up, down, left, right, front and rear) are used to explain the structure and movement of the various components of the invention are not absolute but relative. These descriptions are appropriate when the components are in the positions shown in the drawings. If the description of the location of these components changes, then the indication of these directions changes accordingly.

In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 7, a loading and unloading vehicle for an elevator according to an embodiment of the present invention may include a loading stage 100, a counterweight stage 200, and an armrest 300. The stage 100 and the armrest 300 are respectively disposed at opposite ends of the counterweight table 200, and a universal wheel 211 is disposed below the counterweight table 200. The stage 100 is movable up and down with respect to the counterweight table 200 for placing the object 400 to be loaded and unloaded. The counterweight table 200 is used to place the counterweight 500 to balance the elevator truck.

In this embodiment, the universal wheel 211 is disposed on the counterweight table 200 and the objective table 100 is disposed at the front end of the universal wheel 211, so that when the object 400 to be unloaded is in the car 700, the universal wheel 211 will not enter the car 700, and the deformation of the sill and the car frame due to the stress is avoided. In addition, the stage 100 can move up and down relative to the counterweight table 200, so when the object 400 to be loaded and unloaded enters the car 700, the stage 100 can be lifted to a certain height, the stage 100 is lowered to a proper height after the object 400 to be loaded and unloaded completely enters, and the object is placed in the middle area of the car 700, so that the whole elevator loading and unloading vehicle can not apply larger pressure to the sill and the car frame. Meanwhile, the situation that the elevator car 700 is excessively inclined due to unequal weight distribution in the process of loading and unloading the objects 400 is avoided, stress parts such as a sill, guide shoes and the like are damaged, and the service performance and service life of the elevator and the elevator car 700 are improved.

In addition, since the object 400 to be unloaded is placed at one end of the elevator truck, rollover is likely to occur, the embodiment is provided with the counterweight table 200, and the counterweight 500 is placed at a suitable position of the counterweight table 200 by utilizing the lever principle, so that the elevator truck can be in a balanced state. Moreover, the universal wheels 211 are arranged in the embodiment, so that the mobility of the loading and unloading vehicle for the elevator is greatly improved, and the practicability of the loading and unloading vehicle for the elevator is effectively improved. Preferably, the number of the universal wheels 211 is four, and the universal wheels are respectively arranged at four corners of the counterweight table 200. At this time, the user can grasp the armrest 300 to push or pull the lift truck provided in the present embodiment.

Specifically, referring to fig. 1 to 4, the weight table 200 is disposed at a side far from the universal wheel 211 and one end facing the stage 100 is provided with two columns 212, and the two columns 212 are symmetrically distributed in opposite side regions of the weight table 200. At this time, the stage 100 is located at a side far from the universal wheel 211, and a butt plate 120 is disposed at an end facing the counterweight table 200, and the butt plate 120 is provided with a chute 121 butt-fitted with the column 212, so that the stage 100 moves up and down along the length direction of the column 212. In this embodiment, the upright posts 212 and the sliding slots 121 cooperate with each other to perform a guiding function, so that the stage 100 can move up and down more smoothly.

Preferably, referring to fig. 3 or 5, the number of the sliding grooves 121 is one, and the two posts 212 are respectively located at two side edges of the sliding groove 121, and are disposed at one side of the butt plate 120 facing the counterweight table 200. At this time, the chute 121 can be matched with the two columns 212, so that the object stage 100 can move up and down more stably, the self weight of the object stage 100 can be reduced to the greatest extent, light-weight production is realized, the physical consumption of a user during loading and unloading of the elevator provided by the embodiment is reduced, and the practicability is greatly improved.

Of course, in actual production, the number of the sliding grooves 121 may be two, which are respectively located on two opposite sides of the butt plate 120. At this time, the butt plate 120 is located between the two columns 212, so that the stage 100 can move up and down along the length direction of the columns 212 more smoothly, which is not described herein, and can be flexibly set according to actual needs, which is within the scope of the present invention.

In one embodiment, referring to fig. 1 to 3, the lift truck further comprises a lifting device 600, and the lifting device 600 is fixed to the counterweight table 200 to drive the stage 100 up and down along the length of the column 212.

In particular, referring to fig. 3 to 6, the lifting apparatus 600 includes a lifting assembly 610, an elastic member 620, and a pull rod 630. The lifting assembly 610 is fixed to the counterweight table 200 at a side away from the universal wheel 211 and toward one end of the stage 100 and is located at the center of the two posts 212. At this time, the chute 121 extends toward the lifting assembly 610 and has a first abutment 122 abutting against an end of the lifting assembly 610 away from the counterweight table 200. The counterweight table 200 is provided with a fixing support 213 at a region near the lifting assembly 610 on a side far from the universal wheel 211 for fixing the elastic member 620. The pull rod 630 is fixed on the counterweight table 200, one end of the pull rod 630 is provided with a second abutting table 631 abutting against the elastic element 620, and one end of the pull rod 630 away from the abutting table extends to one end of the counterweight table 200 provided with the handrail 300. When the user operates the pull rod 630 to press down, the lifting assembly 610 drives the object stage 100 to lift; when the user operates the pull rod 630 to lift, the lifting assembly 610 drives the stage 100 to descend.

In this embodiment, the first abutment 122 abuts against the end of the lifting assembly 610 away from the counterweight table 200, so that the lifting assembly 610 can drive the entire object stage 100 to move up and down through the first abutment 122.

Preferably, the elastic member 620 is a spring, and can automatically reset the pull rod 630. Specifically, when the user applies pressure to the pull rod 630, the lifting assembly 610 drives the stage 100 to lift, and if the pressure is lost, the spring drives the pull rod 630 to reset. In contrast, when the user applies a pulling force to the pull rod 630, the lifting assembly 610 drives the object stage 100 to descend, and if the pulling force disappears, the pull rod 630 is reset under the action of gravity.

Further, referring to fig. 3 and 6, a pedal 632 is disposed at an end of the pull rod 630 away from the abutment table, at this time, the end of the pull rod 630 away from the abutment table is inclined towards the ground, and a user can press or lift the pedal 632 by foot to realize the operation of the lifting assembly 610, which is convenient and fast to operate, and greatly improves the working efficiency.

Of course, in actual production, a gripping portion may be further disposed at an end of the pull rod 630 away from the abutment, at this time, an end of the pull rod 630 away from the abutment is disposed at an inclination away from the ground, and a user may grasp the gripping portion with a hand to control lifting of the pull rod 630, so as to further control the lifting assembly 610. In addition, in actual production, a driving member capable of driving the lifting assembly 610 and a button for controlling the driving member may be provided. Thus, the user can control the lifting of the stage 100 by pressing the button, and the present embodiment only exemplifies some possible embodiments, which are not limited herein, and all fall within the scope of the present invention.

Further, referring to fig. 3 and 4, the counterweight table 200 includes a main board 210 and a conveying device 220, at this time, the universal wheels 211 are disposed on the main board 210, and four universal wheels 211 are disposed at four corners of the main board 210 respectively. Meanwhile, a fixing groove 214 for fixing a conveying device 220 is formed on one side of the main board 210 far away from the universal wheels 211, and the conveying device 220 is used for driving the balancing weights 500 to move along the length direction of the main board 210 so as to keep balance of the elevator truck. In contrast, the two posts 212 are disposed on the side of the main board 210 away from the universal wheel 211 and toward one end of the stage 100.

Specifically, referring to fig. 3, 4 and 7, the conveying device 220 includes a driving wheel 221, a driven wheel 222, a driving chain 223 and a conveying belt 224. The driving wheel 221 and the driven wheel 222 are rotatably fixed in the fixed slot 214 through a rotating shaft 225, and a transmission chain 223 is sleeved on the driving wheel 221 and the driven wheel 222, so that the driven wheel 222 and the driving wheel 221 synchronously rotate. The driving belt is sleeved on the driving chain 223 and is used for driving the balancing weight 500 and the driving chain 223 to synchronously move.

At this time, referring to fig. 3 and 7, in order to ensure smooth running of the balancing weight 500, a plurality of rollers 227 should be disposed between the driving wheel 221 and the driven wheel 222, and the intervals between every two adjacent rollers 227, and between the driving wheel 221 and the rollers 227, and between the driven wheel 222 and the rollers 227, are small. Of course, in actual production, a flat plate may be further disposed between the driving wheel 221 and the driven wheel 222, so that the balancing weight 500 can be ensured to run smoothly, which is not described herein, and the balancing weight can be flexibly disposed according to actual situations, and is within the protection scope of the present invention.

Specifically, referring to fig. 3 and 7, a handle 226 is disposed at one end of a rotating shaft 225 penetrating the driving wheel 221, and a user rotates the handle 226 to drive the driving wheel 221 to rotate, so as to drive the balancing weight 500 to move along the length direction of the main board 210, which is beneficial for the user to adjust the position of the balancing weight 500 in time. If the user places the object 400 on the object stage 100, the counterweight 500 can be moved to the balance position by rotating the handle 226, so as to avoid the forward tilting of the elevator truck; when the user removes the object 400 from the object stage 100, the handle 226 can be rotated to move the balancing weight 500 to the middle position of the four universal wheels 211, so that the backward dumping of the elevator truck is avoided, the whole adjustment operation is convenient and quick, the practicability is high, and the working efficiency of the user for loading and unloading the object 400 is greatly improved.

In actual production, a motor in driving connection with the driving wheel 221 and a button for controlling the operation of the motor may be further provided. Thus, the user can control by pressing the button, and the present embodiment only exemplifies some possible schemes, which are not limited herein, and all the possible schemes are within the protection scope of the present invention.

In one embodiment, referring to fig. 1, 2, 3 and 5, the stage 100 includes two support cantilevers 110 and a link plate connecting the two support cantilevers 110, the link plate being used to movably fix the two support cantilevers 110 to the weight table 200. The lower end surfaces of the two support cantilevers 110 are inclined, and one end of the support cantilevers far away from the butt plate 120 is higher than one end of the support cantilevers fixed on the butt plate 120. At this time, the butt plate 120 is disposed at one side of the stage 100 away from the universal wheel 211 and toward one end of the counterweight table 200, i.e., the upper end surface of the connecting plate. Of course, in actual production, the two support cantilevers 110 may be directly fixed to the butt plate 120.

In this embodiment, the two supporting cantilevers 110 are provided to stably carry the object 400 to be loaded and unloaded, and to reduce the weight of the whole elevator truck as much as possible, thereby realizing light weight production. Meanwhile, the weight of the whole elevator loading and unloading vehicle is reduced, the physical consumption of a user during loading and unloading the elevator provided by the embodiment can be properly reduced, and the practicability is greatly improved.

In addition, in the present embodiment, the lower end surfaces of the two support cantilevers 110 are disposed obliquely, and the end of the support cantilevers far away from the butt plate 120 is higher than the end of the support cantilevers fixed to the butt plate 120. In one aspect, the two support cantilevers 110 are fixed to the opposite plate 120 at one end thicker than the opposite plate 120, so that the overall strength is higher, the deformation or damage due to stress is less likely, and the service life and performance are improved. On the other hand, the end of the two supporting cantilevers 110 far away from the butt plate 120 is higher than the end fixed on the butt plate 120, so that the two supporting cantilevers 110 are less likely to touch the car 700 when the lifting device 600 descends, thereby avoiding the deformation of the sill and the car frame due to stress, improving the service performance and the service life of the elevator and the car 700 thereof.

Specifically, referring to fig. 1 and 2, when a user uses the lift truck to transport the object 400 to be loaded and unloaded into the elevator car 700, the lift truck should be pushed to the area where the object 400 to be loaded and unloaded is located, the step 632 is lifted by foot, the stage 100 is lowered to a proper position, and then the object 400 to be loaded and unloaded is placed on the stage 100. Then, the handle 226 is turned to adjust the position of the counterweight 500 so that the lift truck is in a balanced state and does not topple forward. Thereafter, the pedal 632 is stepped on by a foot to raise the stage 100, thereby preventing the stage 100 from being pressed against the sill and the cage when entering the cage 700. Subsequently, the user grips the handrail 300, pushes the lift truck to the landing door of the car 700, opens the landing door of the car 700, continues to push the lift truck, and positions the object 400 to be loaded and unloaded in an area above the center position of the car 700. At this time, the universal wheel 211 is located outside the car 700 and does not press against the sill and the cage. Then, the step 632 is lifted by foot to lower the object stage 100 to a proper position, and the object 400 to be loaded and unloaded is placed in the middle of the car 700, at this time, the whole car 700 is uniformly stressed, and no unbalanced load phenomenon occurs. After the objects 400 to be unloaded are placed, the handle 226 is rotated to move the balancing weights 500 to the central areas of the four universal wheels 211, so that the elevator loading and unloading vehicle is in a balanced state. Thereafter, the pedal 632 is stepped on by a foot to raise the stage 100, thereby preventing the stage 100 from being pressed against the sill and the cage when the stage 100 is separated from the cage 700. Finally, the user grips the handrail 300, withdraws the elevator from the car 700 with the loading and unloading vehicle, closes the landing door of the car 700, and conveys the object 400 to be loaded and unloaded to a designated floor.

In contrast, referring to fig. 1 and 2, when a user uses the elevator car to transport the object 400 from the interior of the elevator car 700, he/she first steps on the pedal 632 to raise the stage 100, avoiding the stage 100 from pressing against the sill and the cage when entering the car 700. Then, the user grips the armrest 300, pushes the lift truck to the landing door of the car 700, opens the landing door of the car 700, continues pushing the lift truck, and positions the waiting stage 100 in an area above the center position of the car 700. At this time, the universal wheel 211 is located outside the car 700 and does not press against the sill and the cage. Then, the object stage 100 is lowered to a proper position by lifting the pedal 632 with feet, and the object 400 to be loaded is placed on the object stage 100, and at this time, the whole car 700 is uniformly stressed, and no unbalanced load phenomenon occurs. After the objects 400 to be unloaded are placed, the user rotates the handle 226 to adjust the position of the balancing weight 500, so that the elevator truck is in a balanced state and cannot topple forward. Thereafter, the pedal 632 is stepped on by a foot to raise the stage 100, thereby preventing the stage 100 from being pressed against the sill and the cage when the stage 100 is separated from the cage 700. Finally, the user grips the handrail 300, withdraws the elevator car from the car 700, and conveys the object 400 to be loaded and unloaded to a designated position.

In practical production, the length of the two supporting cantilevers 110 and the distance between the two supporting cantilevers 110 can be flexibly set according to the size of the object 400 to be loaded and unloaded and the size of the car 700, which are not limited herein, and are all within the scope of the present invention.

In the foregoing embodiments, the descriptions of the embodiments are focused on, and the parts of a certain embodiment that are not described or depicted in detail may be referred to in the related descriptions of other embodiments.

It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (7)

1. A lift truck for an elevator, comprising:

Objective table, counter weight table and handrail;

the object stage and the handrails are respectively arranged at the two opposite ends of the counterweight table, and universal wheels are arranged below the counterweight table, so that when an object to be loaded and unloaded is positioned in the lift car, the universal wheels cannot enter the lift car, and stress deformation of the sill and the lift car frame is avoided;

The object stage can move up and down relative to the counterweight table and is used for placing objects to be loaded and unloaded;

the counterweight table is used for placing a counterweight block so as to keep balance of the elevator loading and unloading vehicle;

the counterweight table comprises a main board and a conveying device;

The universal wheels are arranged on the main board, a fixing groove for fixing the conveying device is formed in one side, away from the universal wheels, of the main board, and the conveying device is used for driving the balancing weights to move along the length direction of the main board so as to keep balance of the elevator loading and unloading vehicle;

the conveying device comprises a driving wheel, a driven wheel, a transmission chain and a conveying belt;

The driving wheel and the driven wheel are rotatably fixed in the fixed groove through a rotating shaft, and the transmission chain is sleeved on the driving wheel and the driven wheel, so that the driven wheel and the driving wheel synchronously rotate; a plurality of rollers are arranged between the driving wheel and the driven wheel;

the conveyor belt is sleeved on the transmission chain and used for driving the balancing weight and the transmission chain to synchronously move;

one end of the rotating shaft penetrating through the driving wheel is provided with a handle, and a user rotates the handle to drive the driving wheel to rotate, so that the balancing weight is driven to move along the length direction of the main board.

2. The lift truck according to claim 1, wherein,

The counterweight table is far away from one side of the universal wheel, two upright posts are arranged at one end of the counterweight table, which faces the objective table, and the two upright posts are symmetrically distributed in the areas on two opposite sides of the counterweight table; and

The objective table is far away from one side of the universal wheel, and towards one end of the counterweight table is provided with a butt plate, and the butt plate is provided with a chute matched with the upright post in a butt joint mode, so that the objective table moves up and down along the length direction of the upright post.

3. The lift truck according to claim 2, wherein,

The number of the sliding grooves is one, the sliding grooves are arranged on one side, facing the counterweight table, of the butt joint plate, and the two upright posts are respectively positioned on the edges of the two sides of the sliding grooves.

4. The lift truck according to claim 2, further comprising:

and the lifting device is fixed on the counterweight table and is used for driving the objective table to move up and down along the length direction of the upright post.

5. The lift truck of claim 4, wherein,

The lifting device comprises a lifting assembly, an elastic piece and a pull rod;

the lifting assembly is fixed on one side of the counterweight table, which is far away from the universal wheel, faces one end of the objective table and is positioned at the centers of the two upright posts, and the chute extends towards the lifting assembly to form a first abutting table which abuts against one end of the lifting assembly, which is far away from the counterweight table;

The counterweight table is arranged at one side far away from the universal wheel, and a fixed support is arranged at the area close to the lifting assembly and used for fixing the elastic piece;

The pull rod is fixed on the counterweight table, one end of the pull rod is provided with a second abutting table which abuts against the elastic piece, and one end of the pull rod away from the abutting table extends to one end of the counterweight table, which is provided with the handrail;

when the user operates the pull rod to press down, the lifting assembly drives the objective table to ascend;

When the user operates the pull rod to lift, the lifting assembly drives the objective table to descend.

6. The lift truck of claim 5, wherein,

One end of the pull rod, which is far away from the abutting table, is provided with a pedal.

7. The lift truck according to any one of claims 2 to 6, characterized in that,

The objective table comprises two supporting cantilevers and a connecting plate for connecting the two supporting cantilevers, and the connecting plate is used for movably fixing the two supporting cantilevers to the counterweight table;

the lower end surfaces of the two supporting cantilevers are obliquely arranged, and one end of each supporting cantilever far away from the butt joint plate is higher than one end of each supporting cantilever fixed to the butt joint plate.