CN216472108U

CN216472108U - Easy-to-operate vertical lathe lifting operation device

Info

Publication number: CN216472108U
Application number: CN202122983866.7U
Authority: CN
Inventors: 史运乾
Original assignee: Luoyang Zecheng Mechanical Equipment Co ltd
Current assignee: Luoyang Zecheng Mechanical Equipment Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-05-10
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses an easy-to-operate vertical lathe lifting operation device, which relates to the field of vertical lathes and aims to solve the problems that the operation space cannot be adjusted and the cost is higher in the prior art; the anti-falling mechanism can prevent the bearing platform from falling; the bottom plate and the guardrail adopt extensible structures, and the extensible mechanism can be started to expand the operation space when the operation space needs to be expanded; the anti-falling mechanism is arranged, so that when the bearing platform falls in an accident, the anti-falling mechanism can limit the position to prevent falling.

Description

Easy-to-operate vertical lathe lifting operation device

Technical Field

The utility model relates to the field of vertical lathes, in particular to an easy-to-operate vertical lathe lifting operation device.

Background

The vertical lathe is different from the common lathe in that the main shaft of the vertical lathe is vertical, which is equivalent to the common lathe being vertically erected. The workbench is in a horizontal position, so that the machine is suitable for processing heavy parts with large diameter and short length. The vertical lathe can process inner and outer cylinders, conical surfaces, end planes, grooves, chamfers and the like, and the operations of clamping, correcting and the like of workpieces are convenient. When the vertical lathe is used for setting a tool and measuring the size of a workpiece, a worker needs to be close to a workpiece to measure, so that a safety operation device needs to be provided to protect the safety of the worker.

Chinese patent CN202020747548.3 discloses a lift operation device for a vertical lathe and a gantry vertical lathe, which adopts the technical scheme that the vertical lathe is provided with a ram, the lift operation device comprises a lift motor, an operation switch, a speed reducer, a lift transmission mechanism, a guide mechanism and a bearing platform, an output shaft of the lift motor is connected with the speed reducer, the guide mechanism is fixed with the ram, the lift transmission mechanism is connected with the bearing platform through the guide mechanism, the rotation motion transmitted by the speed reducer is converted into lift translation motion, the lift translation motion is transmitted to the bearing platform through the guide mechanism, and the operation switch is electrically connected with the lift motor; the bearing platform can be also provided with a protective fence with a protective door; the lifting transmission mechanism can comprise a lead screw and a nut which are meshed with each other, the guide mechanism comprises a guide support and a guide rod, the guide rod can freely slide in the guide support, the sliding direction of the guide rod is consistent with the moving direction of the nut, the lead screw is fixedly connected with the output end of the speed reducer, the nut is fixed with the guide rod, the guide support is fixed with the ram, and the bearing platform is installed at the lower end of the guide rod; the device also comprises a first locking device, wherein the bearing platform is provided with a safe position, and when the bearing platform is positioned at the safe position, the first locking device sends an unlocking signal; the bottom of the bearing platform can be provided with a second locking device, and when the gravity borne on the bearing platform reaches a set value, the second locking device sends a locking signal; according to the technical scheme, the size of the operation space on the bearing platform is fixed, and the operation space cannot be expanded according to actual needs; and the lifting cost is higher by adopting the lead screw to control the lifting.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model discloses an easy-to-operate vertical lathe lifting operation device, which adopts the technical scheme that the device comprises a ram, a bearing platform and an operation switch, wherein the ram is provided with a lifting mechanism, the lifting mechanism is connected with the bearing platform, the lifting mechanism is provided with a first locking mechanism, a second locking mechanism is arranged in the bearing platform, the first locking mechanism and the second locking mechanism are travel switches, the operation switch is electrically connected with the lifting mechanism and a controller, the lifting mechanism comprises a lifting motor, chain wheels and chains, the chain wheels are arranged in two groups, the ram is vertically arranged, the chains are sleeved on the chain wheels and can pull a hanging object to move up and down, the output end of the lifting motor is connected with the chain wheels after being connected with a speed reducer, and the motor can provide a rotating speed for lifting the object after being reduced by the speed reducer, the bearing platform is provided with a connecting wall, a bottom plate and a guardrail, the chain is connected with the connecting wall, the chain can pull the connecting wall to lift, so that the bearing platform is driven to lift, the connecting wall is also provided with an orientation mechanism and an anti-falling mechanism, the orientation mechanism can prevent the bearing platform from deviating, the bottom plate and the guardrail adopt extensible structures, the requirement for expanding the operation space can be met, and the controller is electrically connected with the lifting motor.

As a preferred technical scheme of the utility model, the orientation mechanism comprises a limiting column and a limiting block, the limiting column is arranged on the ram, the limiting block is arranged on the side surface of the connecting wall, the two limiting columns are arranged in a group, and the two limiting columns clamp the limiting block from two sides, so that the limiting block can only move up and down to prevent deviation.

As a preferred technical scheme of the utility model, the anti-falling mechanism comprises a base, a central plate and an anti-falling hook, wherein the base is connected to the connecting wall through a shaft, the central plate is connected to the base and is connected with the anti-falling hook through a shaft, and a tension spring is connected between the anti-falling hook and the central plate through a shaft; the anti-falling mechanism is adjacent to one side of the limiting column, a hook groove which is corresponding to the anti-falling hook in position and is matched with the anti-falling hook in size is formed in the limiting column, the base is connected with the limiting column, when falling occurs, the bottom plate rotates rapidly along the limiting column to form larger centrifugal force, the anti-falling hook rotates outwards under the action of the centrifugal force, and the anti-falling hook is hooked in the hook groove to realize limiting.

As a preferred technical scheme of the utility model, the outer side of the base is wrapped with a rubber ring, the rubber ring is in sliding connection with the limiting column, and the base tightly presses the rubber ring on the limiting column to enable the rubber ring to deform to generate enough friction force; the central plate is also provided with an outer cover to protect the anti-falling mechanism.

As a preferred technical scheme of the utility model, the guardrail comprises a front guardrail and two side guardrails, wherein the front guardrail and the connecting wall are respectively arranged at the left end and the right end of the bearing platform, and the two side guardrails are arranged at the front side and the rear side of the bearing platform; the bottom plate is provided with a plurality of blocks which are longitudinally arranged, a third rotating shaft and a fourth rotating shaft are arranged on the front surface and the back surface of the bottom plate, the third rotating shaft and the fourth rotating shaft are arranged up and down, a connecting piece is connected between the third rotating shaft of the bottom plate and the fourth rotating shaft of the bottom plate adjacent to the right side through a shaft, the third rotating shaft of the bottom plate at the end part of the right side is connected with the connecting wall through a shaft, the fourth rotating shaft of the bottom plate at the end part of the left side is connected with one end of a second connecting piece through a shaft, the other end of the second connecting piece is connected with the front guardrail through a sleeved connecting sleeve, when the front guardrail moves leftwards, the bottom plate can be pulled to rotate around the third rotating shaft and the fourth rotating shaft so as to realize flattening, and the connecting piece can realize the connecting effect between the adjacent bottom plates; the side guardrail also comprises a plurality of baffle plates, a first rotating shaft and a second rotating shaft, wherein the baffle plates are arranged in a snake shape, two ends of each baffle plate are respectively hinged with the adjacent baffle plates through the first rotating shaft and the second rotating shaft, two sides of each side guardrail are respectively hinged with the front guardrail and the connecting wall, when the front guardrail moves leftwards, the baffle plates can rotate around the first rotating shaft and the second rotating shaft to be extended, and an operation space is gradually enlarged along with the extension of the bottom plate and the side guardrails; the connecting sleeve is connected to the extending end of the electric cylinder, the electric cylinder is electrically connected with the controller, and the change of the operation space can be automatically controlled by extending and retracting the electric cylinder.

As a preferred technical scheme of the utility model, a guardrail seat is further installed on the connecting wall, a side groove is formed on the side surface of the guardrail seat, a top groove is formed on the top surface of the guardrail seat, a third rotating shaft of the bottom plate is in sliding connection in the side groove, a second rotating shaft of the guardrail plate is in sliding connection in the top groove, and the guardrail seat can further provide support and improve the bearing strength of the bottom plate; the fixed end of the electric cylinder is arranged on the guardrail seat.

As a preferable technical scheme of the utility model, the connecting wall is also provided with the pedal and the handrail, so that the operator can stand on the pedal, hold the handrail by hand and adjust the operation space on the bearing platform, and the phenomenon that the change of the bottom plate causes unstable standing of the worker and the risk of falling is prevented.

As a preferable technical scheme of the utility model, the connecting wall is provided with a connecting rod, and the chain is connected with the connecting rod.

The utility model has the beneficial effects that: the bearing platform is driven to lift through the chain wheel and the chain, the manufacturing cost is low, the lifting is stable, and the bearing platform can directionally slide by the directional mechanism to prevent deviation; the anti-falling mechanism can prevent the bearing platform from falling; the bottom plate and the guardrail adopt extensible structures, and the extensible mechanisms can be started to expand the operation space when the operation space needs to be expanded.

Furthermore, the periphery of the base of the anti-falling mechanism is sleeved with the rubber ring, the rubber ring is tightly attached to the limiting column, the base can rotate in the lifting process of the bearing platform by means of friction force, if falling occurs, the limiting hook rotates out of the hook groove to be limited by the aid of large centrifugal force generated under the rapid rotation of the base, and falling prevention is achieved.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings needed to be used in the detailed description or the prior art will be briefly described below; in all the drawings, the elements or parts are not necessarily drawn to actual scale.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

FIG. 3 is a schematic side view of the connecting wall according to the present invention;

FIG. 4 is a schematic illustration of the position of the fall arrest mechanism of the present invention;

FIG. 5 is a schematic structural view of the fall arrest mechanism of the present invention;

FIG. 6 is a schematic view of the extendable mechanism of the present invention;

FIG. 7 is a schematic view of a bottom plate connection structure according to the present invention;

FIG. 8 is a schematic top view of the side rail of the present invention;

fig. 9 is a schematic view of the guardrail mounting structure of the utility model.

In the figure: 1. a ram; 2. a chain wheel; 3. a chain; 4. a limiting column; 5. a connecting wall; 501. a pedal; 502. a handrail; 503. an operating switch; 6. a limiting block; 7. a load-bearing platform; 8. a front guardrail; 9. side guardrails; 901. a breast board; 902. a first rotating shaft; 903. a second rotating shaft; 10. an anti-falling mechanism; 1001. a base; 1002. a rubber ring; 1003. an outer cover; 1004. a center plate; 1005. preventing falling hook; 1006. an extension spring; 11. a connecting rod; 12. a guardrail seat; 1201. a side groove; 1202. a top groove; 13. a base plate; 14. a connecting member; 15. an electric cylinder.

Detailed Description

The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1 to 9, the utility model discloses an easy-to-operate vertical lathe lifting operation device, which adopts the technical scheme that the device comprises a ram 1, a bearing platform 7 and an operation switch 503, wherein the ram 1 is provided with a lifting mechanism, the lifting mechanism is connected with the bearing platform 7, the lifting mechanism is provided with a first locking mechanism, the bearing platform 7 is internally provided with a second locking mechanism, the operation switch 503 is electrically connected with the lifting mechanism and a controller, the lifting mechanism comprises a lifting motor, chain wheels 2 and chains 3, the chain wheels 2 are provided with two groups, each group is provided with two coaxially arranged chain wheels 2, the two chain wheels 2 are arranged on a main shaft, the ram 1 is arranged up and down, the chain wheels 2 are sleeved with the chains 3, the output end of the lifting motor is connected with a speed reducer and then is connected with the main shaft, the bearing platform 7 is provided with a connecting wall 5, Bottom plate 13 and guardrail, two sets of the chain 3 all with connecting wall 5 links to each other, makes connecting wall 5 atress more even, last orientation mechanism and the anti-falling mechanism 10 in addition of connecting wall 5, bottom plate 13 and guardrail adopt extensible structure, the controller with the elevator motor electrical property links to each other.

As a preferred technical scheme of the utility model, the orientation mechanism comprises two limiting columns 4 and two limiting blocks 6, the limiting columns 4 are arranged on the ram 1, two groups of the limiting columns 4 are provided, each group has two limiting columns 4, the two groups of the limiting columns 4 are respectively arranged on two sides of the connecting wall 5, the limiting blocks 6 are arranged on the side surfaces of the connecting wall 5, and the limiting blocks 6 are connected between the two limiting columns 4 in a sliding manner.

As a preferred embodiment of the present invention, the anti-falling mechanism 10 includes a base 1001, a central plate 1004, and an anti-falling hook 1005, wherein the base 1001 is connected to the connecting wall 5 by a shaft, the base 1001 is connected to the central plate 1004, the central plate 1004 is connected to the anti-falling hook 1005 by a shaft, and a tension spring 1006 is further connected between the anti-falling hook 1005 and the central plate 1004 by a shaft; the anti-falling mechanism 10 is close to one side of the limiting column 4, a hook groove which corresponds to the anti-falling hook 1005 in position and is matched with the anti-falling hook 1005 in size is formed in the limiting column 4, and the base 1001 is connected with the limiting column 4; when the base 1001 rotates rapidly, the central plate 1004 is driven to rotate rapidly, so that the anti-falling hook 1005 is subjected to a large centrifugal force, the anti-falling hook 1005 starts to rotate after the centrifugal force is larger than the tensile force of the tension spring 1006, and is unfolded, and when the anti-falling hook is hooked into the hook groove, the anti-falling hook is limited.

As a preferred technical scheme of the utility model, the outer side of the base 1001 is wrapped with a rubber ring 1002, the rubber ring 1002 is connected with the limit column 4 in a sliding manner, and the rubber ring 1002 of the limit column 4 is tightly connected with the limit column 4 to provide a large friction force; the central plate 1004 also has a cover 1003 mounted thereon.

As a preferred technical scheme of the utility model, the guardrail comprises a front guardrail 8 and side guardrails 9, the front guardrail 8 and the connecting wall 5 are respectively arranged at the left end and the right end of the bearing platform 7, and two side guardrails 9 are arranged at the front side and the rear side of the bearing platform 7; the bottom plate 13 is provided with a plurality of blocks and is longitudinally arranged, a third rotating shaft and a fourth rotating shaft are arranged on the front surface and the back surface of the bottom plate 13 respectively, the third rotating shaft and the fourth rotating shaft are arranged up and down, a connecting piece 14 is connected between the third rotating shaft of the bottom plate 13 and the fourth rotating shaft of the bottom plate 13 adjacent to the right side, the third rotating shaft of the bottom plate 13 at the right side end is connected with the connecting wall 5 through a shaft, the fourth rotating shaft of the bottom plate 13 at the left side end is connected with one end of a second connecting piece through a shaft, the other end of the second connecting piece is connected with the front guardrail 8 through a sleeved connecting sleeve, an accommodating cavity which corresponds to the bottom plate 13 and the connecting piece 14 in position and is matched with the size is arranged on the bearing platform 7, and the bottom plate 13 and the connecting piece 14 are arranged in the accommodating cavity; the side guard rail 9 further comprises a plurality of baffle plates 901, a first rotating shaft 902 and a second rotating shaft 903, the baffle plates 901 are distributed in a snake shape, two ends of each baffle plate 901 are hinged to the adjacent baffle plates 901 through the first rotating shaft 902 and the second rotating shaft 903 respectively, and two sides of the side guard rail 9 are hinged to the front guard rail 8 and the connecting wall 5 respectively; the connecting sleeve is connected to the extending end of the electric cylinder 15, and the electric cylinder 15 is electrically connected with the controller; the electric cylinder 15 pushes the front guard rail 8 and the connecting sleeve to move leftward, and pulls the bottom plate 13 and the breast plate 901 of the side guard rail 9 to spread out, so as to enlarge the operating space.

As a preferable technical solution of the present invention, a guardrail seat 12 is further installed on the connecting wall 5, a side groove 1201 is formed on a side surface of the guardrail seat 12, a top groove 1202 is formed on a top surface of the guardrail seat, a third rotating shaft of the bottom plate 13 is slidably connected in the side groove 1201, and a second rotating shaft 903 of the guardrail plate 901 is slidably connected in the top groove 1202; the fixed end of the electric cylinder 15 is arranged on the guardrail seat 12.

As a preferable technical solution of the present invention, the connection wall 5 is further provided with a pedal 501 and a handrail 502, and when the operation space needs to be enlarged, the user stands on the pedal 501 and holds the handrail 502 to stand stably, and then operates the operation, so as to prevent the occurrence of falling injury.

As a preferred technical solution of the present invention, the connecting wall 5 is provided with a connecting rod 11, and the chain 3 is connected to the connecting rod 11.

The working principle of the utility model is as follows: in the use process, a worker goes up to the bottom plate 13, operates the operation switch 503 to start the motor, drives the chain wheel 2 to rotate, the chain wheel 2 pulls the connecting wall 5 to move up and down through the chain 3, so as to drive the bearing platform 7 to move up and down, the limiting block 6 slides between the limiting columns 4 in the moving process to prevent the bearing platform 7 from deviating, and the rubber ring 1002 of the anti-falling mechanism 10 rolls on the limiting columns 4 to drive the base 1001 to rotate, so that the anti-falling mechanism 10 is in a rotating state.

When the operation space needs to be enlarged, a worker holds the handrail 502 and stands on the pedal 501, the operation switch 503 is operated to control the electric cylinder 15 to extend, the electric cylinder 15 pushes the front guardrail 8 and the connecting sleeve to move leftwards, the bottom plate 13 is pulled through the second connecting piece and the connecting piece 14 to extend leftwards along the side groove 1201 of the guardrail seat 12, meanwhile, the guardrail 901 of the side guardrail 9 rotates around the first rotating shaft 902 and the second rotating shaft 903 to be gradually flattened, the second rotating shaft 903 slides along the top groove 1202 of the guardrail seat 12, the electric cylinder 15 stops extending after extending to a set length, and the worker operates from the upper part and the lower part of the pedal 501 to the bottom plate 13; after the operation is finished, the electric cylinder 15 is recovered by standing on the pedal 501 again, and the bottom plate 13 and the side guard 9 are driven to recover.

When the connecting wall 5 and the bearing platform 7 fall, the anti-falling mechanism 10 rotates rapidly, the anti-falling hook 1005 rotates outwards under the action of centrifugal force and stretches the extension spring 1006, at the moment, the magnitude of the centrifugal force is larger than the pulling force of the extension spring 1006, the anti-falling hook 1005 can be hooked in the hook groove along with the opening of the anti-falling hook 1005, the groove surface of the groove is an inclined groove surface, and the anti-falling hook 1005 and the hook groove have great friction force under the action of gravity of the bearing platform 7, so that the anti-falling hook 1005 is prevented from falling off from the hook groove, and stable limitation is provided to prevent the bearing platform 7 from continuing to fall.

The electrical circuits and mechanical connections involved in the present invention are conventional means employed by those skilled in the art and may be suggested by limited experimentation and are within the ordinary skill of the art.

Components not described in detail herein are prior art.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. The utility model provides an easy merry go round machine lift operating means of operating, includes ram (1), load-bearing platform (7) and operating switch (503), there is elevating system on ram (1), elevating system connects load-bearing platform (7), first blocked mechanical system is equipped with on the elevating system, second blocked mechanical system is equipped with in load-bearing platform (7), operating switch (503) with elevating system, controller electrical property link to each other its characterized in that: elevating system includes elevator motor, chain wheel (2) and chain (3), chain wheel (2) have two sets ofly set up from top to bottom on ram (1), the cover is equipped with on chain wheel (2) chain (3), after the reduction gear is connected to the elevator motor output with chain wheel (2) link to each other, load-bearing platform (7) are gone up and are connected wall (5), bottom plate (13) and guardrail, chain (3) with connecting wall (5) link to each other, directional mechanism and anti-falling mechanism (10) in addition on connecting wall (5), bottom plate (13) and guardrail adopt the extensible structure, the controller with the elevator motor electrical property links to each other.

2. An easily operable lift-operating device for a vertical lathe according to claim 1, wherein: the orientation mechanism comprises a limiting column (4) and a limiting block (6), the limiting column (4) is arranged on the ram (1), the limiting block (6) is arranged on the side face of the connecting wall (5), the two limiting columns (4) are arranged in a group, and the limiting block (6) is arranged in two sliding connection between the limiting columns (4).

3. An easily operable lift-operating device for a vertical lathe according to claim 2, wherein: the anti-falling mechanism (10) comprises a base (1001), a central plate (1004) and an anti-falling hook (1005), wherein the base (1001) is connected to the connecting wall (5) through a shaft, the base (1001) is connected with the central plate (1004), the central plate (1004) is connected to the anti-falling hook (1005) through a shaft, and a tension spring (1006) is connected between the anti-falling hook (1005) and the central plate (1004) through a shaft; prevent weighing down mechanism (10) and be close to spacing post (4) are on one side, just spacing post (4) go up with prevent weighing down hook (1005) corresponding, size assorted hook groove in position, base (1001) with spacing post (4) meet.

4. An easily operable lift truck lifting operation device according to claim 3, characterized in that: the outer side of the base (1001) is wrapped with a rubber ring (1002), and the rubber ring (1002) is connected with the limiting column (4) in a sliding mode; the central plate (1004) is also provided with an outer cover (1003).

5. An easily operable lift-operating device for a vertical lathe according to claim 1, wherein: the guardrail comprises a front guardrail (8) and side guardrails (9), the front guardrail (8) and the connecting wall (5) are respectively arranged at the left end and the right end of the bearing platform (7), and two side guardrails (9) are arranged at the front side and the rear side of the bearing platform (7); the bottom plate (13) is provided with a plurality of blocks which are arranged longitudinally, a third rotating shaft and a fourth rotating shaft are arranged on the front surface and the back surface of the bottom plate (13), the third rotating shaft and the fourth rotating shaft are arranged up and down, a connecting piece (14) is connected between the third rotating shaft of the bottom plate (13) and the fourth rotating shaft of the bottom plate (13) adjacent to the right side in a shaft mode, the third rotating shaft of the bottom plate (13) is connected with the connecting wall (5) in the end part of the right side in a shaft mode, the fourth rotating shaft of the bottom plate (13) at the end part of the left side is connected with one end of a second connecting piece in a shaft mode, and the other end of the second connecting piece is connected with the front guardrail (8) in a shaft mode after being sleeved with a connecting sleeve; the side guardrail (9) further comprises a plurality of baffle plates (901), a first rotating shaft (902) and a second rotating shaft (903), the baffle plates (901) are distributed in a snake shape, two ends of each baffle plate (901) are hinged to the adjacent baffle plates (901) through the first rotating shaft (902) and the second rotating shaft (903) respectively, and two sides of the side guardrail (9) are hinged to the front guardrail (8) and the connecting wall (5) respectively; the connecting sleeve is connected to the extending end of the electric cylinder (15), and the electric cylinder (15) is electrically connected with the controller.

6. An easily operable lift truck lifting operation device according to claim 5, characterized in that: a guardrail seat (12) is further installed on the connecting wall (5), a side groove (1201) is formed in the side surface of the guardrail seat (12), a top groove (1202) is formed in the top surface of the guardrail seat, a third rotating shaft of the bottom plate (13) is connected in the side groove (1201) in a sliding mode, and a second rotating shaft (903) of the guardrail plate (901) is connected in the top groove (1202) in a sliding mode; the fixed end of the electric cylinder (15) is arranged on the guardrail seat (12).

7. An easily operable lift truck lifting operation device according to claim 5, characterized in that: the connecting wall (5) is also provided with a pedal (501) and a handrail (502).

8. An easily operable lift-operating device for a vertical lathe according to claim 1, wherein: the connecting wall (5) is provided with a connecting rod (11), and the chain (3) is connected with the connecting rod (11).