阅读说明：本技术 检修剪叉车平台及配重计算方法 (Maintenance forklift platform and counterweight calculation method ) 是由 马向南 杨涛 王超 陈图腾 袁虎强 赵伟杰 胡梦霖 王伟 吴新文 于 2021-08-24 设计创作，主要内容包括：本发明公开一种检修剪叉车平台及配重计算方法,检修剪叉车平台包括作业平台、机械手和配重机构,作业平台用于设置于检修剪叉车,作业平台包括工作端和配重端；机械手包括支架和抓手,支架的一端固定连接于作业平台,抓手可活动地连接于支架的另一端,支架用于驱动抓手朝作业平台的工作端外伸或缩回；配重机构设置于配重端。通过在作业平台的配重端设置配重机构,以维持该作业平台的平衡,避免该抓手抓取货物时由于重心改变导致作业平台受力不稳定的问题,保障不同作业工况下作业人员的安全。该配重计算方法能够根据抓取货物的载荷能够计算出该配重块需要距离配重块最接近的检修剪叉车支点的垂直距离,从而调整该配装块的自身位置。(The invention discloses a maintenance scissor fork truck platform and a counter weight calculation method, wherein the maintenance scissor fork truck platform comprises an operation platform, a manipulator and a counter weight mechanism, the operation platform is arranged on a maintenance scissor fork truck, and the operation platform comprises a working end and a counter weight end; the manipulator comprises a support and a gripper, one end of the support is fixedly connected to the operation platform, the gripper is movably connected to the other end of the support, and the support is used for driving the gripper to extend outwards or retract towards the working end of the operation platform; the counterweight mechanism is arranged at the counterweight end. The counterweight mechanism is arranged at the counterweight end of the operation platform, so that the balance of the operation platform is maintained, the problem that the stress of the operation platform is unstable due to the change of the gravity center when the gripper grabs the goods is avoided, and the safety of operators under different operation working conditions is guaranteed. The counterweight calculation method can calculate the vertical distance of the counterweight block from the supporting point of the maintenance forklift closest to the counterweight block according to the load of the grabbed goods, so that the self position of the assembly block is adjusted.)

1. The utility model provides a fork truck platform is cut in maintenance which characterized in that includes:

the operation platform is arranged on the detection and trimming forklift and comprises a working end and a counterweight end;

the manipulator comprises a support and a gripper, one end of the support is fixedly connected to the operation platform, the gripper is movably connected to the other end of the support, and the support is used for driving the gripper to extend outwards or retract towards the working end of the operation platform; and

the counterweight mechanism is arranged at the counterweight end and used for adjusting the integral gravity center of the maintenance fork truck platform so as to maintain the balance of the operation platform.

2. The forklift platform as claimed in claim 1, wherein said support comprises a first arm, a second arm, a first driving rod and a second driving rod, one end of said first arm is rotatably connected to said working platform, the other end of said first arm is rotatably connected to one end of said second arm, said gripper is connected to the other end of said second arm, said first driving rod is rotatably connected between said working platform and said first arm, said second driving rod is rotatably connected between said first arm and said second arm, said first driving rod is used for driving said first arm to swing with respect to said working platform, and said second driving rod is used for driving said second arm to swing with respect to said first arm.

3. The forklift platform of claim 2, wherein the hand grip comprises a support, a fixed jaw and a movable jaw, the second mechanical arm is connected with the support, the fixed jaw is fixedly connected with the support, and the movable jaw is openably and closably arranged on the fixed jaw.

4. The service scissor truck platform of claim 1 further comprising a scissor lift device comprising a lift end connected to the work platform, the scissor lift device configured to drive the work platform up and down.

5. The service scissor lift platform of claim 4, further comprising a rotating disk rotatably coupled to the lift end, the work platform rotatably coupled to the scissor lift via the rotating disk.

6. The service scissor truck platform of claim 4, further comprising a moving base, wherein the scissor lift device further comprises a fixed end fixedly connected to the moving base, wherein the moving base comprises a base, a locking member, and a roller, wherein the roller is configured to adjust the position of the moving base, and the locking member is configured to lock the position of the moving base.

7. The service scissor truck platform of claim 6, wherein the locking member is a hydraulic support bar that is telescopically disposed to the movable base, wherein the locking member is retracted when the movable base is in the movable state, and wherein the locking member extends outwardly and supports the movable base when the movable base is in the fixed state.

8. The service scissor forklift platform of any one of claims 1-7, wherein the counterweight mechanism comprises a counterweight and a slide rail, the slide rail is fixedly connected to the counterweight end, and the counterweight is slidably connected to the slide rail.

9. A method for calculating a counterweight by using the maintenance scissor truck platform according to any one of claims 1 to 8, comprising the steps of:

solving the vertical distance between the gravity center of the balancing weight and the supporting point of the maintenance fork truck closest to the balancing weight;

the position of the balancing weight is adjusted through the vertical distance of the pivot point of the maintenance fork truck with the closest gravity center of the balancing weight, so that the operation platform is in a balanced state.

10. The method of claim 9, wherein the step of solving for the vertical distance between the center of gravity of the weight block and the closest pivot point of the forklift truck to the weight block comprises:

solving the gravity center of the balancing weight and the vertical distance between the gravity center of the balancing weight and the supporting point of the maintenance fork truck closest to the balancing weight through a moment balance equation, wherein the calculation formula is as follows:

the device comprises a load F1, a load L1, a load weight center, a supporting force F3, a weight block L3, a supporting force L4, a supporting force G4 and a gravity center G1, wherein the load F1 is the load of the load, the vertical distance L1 is the vertical distance between the gravity center of the load and the supporting point O1 of the maintenance scissors forklift closest to the load, the distance L2 is the distance between the gravity center of the load and the supporting point O1 and O2 of the maintenance scissors forklift closest to the load, the supporting force F2 is the supporting force of the supporting point O1 and O2, the load F3 is the load of the weight block, the vertical distance L3 is the vertical distance between the gravity center of the weight block and the supporting point O2 of the maintenance scissors closest to the weight block, the gravity center of the operation platform itself is the vertical distance O1, and the gravity of the operation platform itself is G.

Technical Field

The invention relates to the technical field of high-altitude detection and maintenance, in particular to a maintenance scissor truck platform and a counter weight calculation method.

Background

The overhaul of high voltage converter station filter equipment, under the normal conditions, the hoisting equipment that the operation process adopted is crane and lifting rope device, though these hoisting equipment can realize the operation demand, nevertheless because equipment such as crane is whole big in size, the activity space demand of operation and turnover is equally great in the place, simultaneously because the restriction of equipment minimum working height for vertical displacement can take place to interfere with transformer substation's circuit etc.. Therefore, in the previous operation process, in order to avoid danger of equipment and personnel, the power grid bus needs to be powered off, the normal working efficiency of the converter station is influenced to a certain extent by the operation process, and huge economic loss is caused to the converter station.

Disclosure of Invention

Based on this, it is necessary to provide a maintenance forklift platform and a counterweight calculation method, so as to facilitate the maintenance forklift platform and the counterweight calculation method.

The specific technical scheme is as follows:

on one hand, the application relates to a maintenance scissor fork truck platform which comprises an operation platform, a manipulator and a counterweight mechanism, wherein the operation platform is arranged on a maintenance scissor fork truck and comprises a working end and a counterweight end; the manipulator comprises a support and a gripper, one end of the support is fixedly connected to the operation platform, the gripper is movably connected to the other end of the support, and the support is used for driving the gripper to extend outwards or retract towards the working end of the operation platform; the counterweight mechanism is arranged at the counterweight end and used for adjusting the integral gravity center of the maintenance fork truck platform so as to maintain the balance of the operation platform.

Above-mentioned examine prune fork truck platform when using, be fixed in this operation platform and examine prune fork truck, make this maintenance prune the fork truck have one follow the operation platform of action, can the efficient lift operation platform, set up the manipulator in this operation platform, the work end action of this relative operation platform of this support drive tongs, can stretch out and snatch the goods in this work end, and set up counter weight mechanism through the counter weight end at operation platform, in order to maintain the balance of this operation platform, because the focus changes the unstable problem of operation platform atress when avoiding this tongs to snatch the goods, guarantee operating personnel's safety under the different operation operating modes.

The technical solution is further explained below:

in one embodiment, the support includes a first arm, a second arm, a first driving lever, and a second driving lever, one end of the first arm is rotatably connected to the work platform, the other end of the first arm is rotatably connected to one end of the second arm, the gripper is connected to the other end of the second arm, the first driving lever is rotatably connected between the work platform and the first arm, the second driving lever is rotatably connected between the first arm and the second arm, the first driving lever is configured to drive the first arm to swing with respect to the work platform, and the second driving lever is configured to drive the second arm to swing with respect to the first arm. This support adopts two segmentation arm structures, and first arm and second arm rotation each other are connected, and support through first actuating lever and second actuating lever respectively to realize that two segmentations are rotatory, the working range of tongs is wider, the working range of increase tongs.

In one embodiment, the gripper comprises a support, a fixed claw and a movable claw, the second mechanical arm is connected with the support, the fixed claw is fixedly connected with the support, and the movable claw is arranged on the fixed claw in an openable and closable manner. By driving the movable claws to enlarge or reduce the hand grip, the size of the hand grip can be conveniently adjusted according to the size and the shape of goods.

In one embodiment, the trimming forklift platform further comprises a scissor lifting device, the scissor lifting device comprises a lifting end connected with the working platform, and the scissor lifting device is used for driving the working platform to lift. Through this scissor lifting device, can the efficient lift operation platform for this operation platform can reach required height.

In one embodiment, the trimming forklift platform further comprises a rotating disc, the rotating disc is rotatably connected to the lifting end, and the working platform is rotatably connected to the trimming forklift lifting device through the rotating disc. The rotating disc is arranged, so that the working space of the working platform is not limited, and the working range is maximized.

In one embodiment, the trimming forklift platform further comprises a moving seat, the trimming fork lifting device further comprises a fixed end fixedly connected to the moving seat, the moving seat comprises a base, a locking member and a roller, the roller is used for adjusting the position of the moving seat, and the locking member is used for locking the position of the moving seat. Should remove the seat and cut fork elevating gear combination driving and cut fork truck with this, this inspection car can remove according to the demand, when needs snatch the goods, through this locking piece locking base to cut the fork truck platform with this maintenance and fix, improve this maintenance and cut the job stabilization nature when the fork truck platform snatchs.

In one embodiment, the locking member is a hydraulic support rod, the locking member is telescopically arranged on the movable base, when the movable base is in a movable state, the locking member is retracted, and when the movable base is in a fixed state, the locking member extends outwards and supports the movable base. The edge through removing the seat sets up the hydraulic pressure bracing piece, drives this hydraulic pressure bracing piece and extends the back butt in ground to avoid gyro wheel and ground contact, thereby realize removing the locking of seat, this hydraulic pressure bracing piece's support stable performance, simple structure.

In one embodiment, the counterweight mechanism includes a counterweight block and a slide rail, the slide rail is fixedly connected to the counterweight end, and the counterweight block is slidably connected to the slide rail. The counterweight block changes the position according to different operation loads so as to meet the stress balance of the operation platform under the condition of different operation loads of the gripper, and the product safety and the use durability are improved.

On the other hand, the application also provides a counterweight calculation method, the counterweight calculation is carried out through the maintenance forklift platform in any embodiment, and the method comprises the following steps:

solving the vertical distance between the gravity center of the balancing weight and the supporting point of the maintenance fork truck closest to the balancing weight;

the position of the balancing weight is adjusted through the vertical distance of the pivot point of the maintenance fork truck with the closest gravity center of the balancing weight, so that the operation platform is in a balanced state.

The counterweight calculation method can calculate the required vertical distance between the gravity center of the counterweight block and the maintenance fork truck pivot closest to the counterweight block according to the load of the grabbed goods, so that the self position of the assembly block is adjusted, and the stress balance of the operation platform is maintained constantly.

In one embodiment, the step of solving the vertical distance between the gravity center of the balancing weight and the supporting point of the maintenance forklift closest to the balancing weight comprises the following steps:

solving the gravity center of the balancing weight and the vertical distance between the gravity center of the balancing weight and the supporting point of the maintenance fork truck closest to the balancing weight through a moment balance equation, wherein the calculation formula is as follows:

the device comprises a load F1, a load L1, a load weight center, a supporting force F3, a weight block L3, a supporting force L4, a supporting force G4 and a gravity center G1, wherein the load F1 is the load of the load, the vertical distance L1 is the vertical distance between the gravity center of the load and the supporting point O1 of the maintenance scissors forklift closest to the load, the distance L2 is the distance between the gravity center of the load and the supporting point O1 and O2 of the maintenance scissors forklift closest to the load, the supporting force F2 is the supporting force of the supporting point O1 and O2, the load F3 is the load of the weight block, the vertical distance L3 is the vertical distance between the gravity center of the weight block and the supporting point O2 of the maintenance scissors closest to the weight block, the gravity center of the operation platform itself is the vertical distance O1, and the gravity of the operation platform itself is G.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive labor.

Furthermore, the drawings are not to scale of 1:1, and the relative dimensions of the various elements in the drawings are drawn only by way of example and not necessarily to true scale.

FIG. 1 is a schematic view of the overall structure of an embodiment of a maintenance fork truck platform;

FIG. 2 is a partial schematic view of an embodiment of a service scissor truck platform;

FIG. 3 is a front view of an embodiment of a service scissor truck platform;

FIG. 4 is a partial schematic view of a robot according to one embodiment;

FIG. 5 is a schematic diagram of a movable base according to an embodiment;

FIG. 6 is a force analysis diagram of the forklift platform for servicing according to an embodiment.

Description of reference numerals:

10. overhauling the scissor fork truck platform; 100. an operation platform; 110. a working end; 120. a counterweight end; 200. a manipulator; 210. a support; 212. a first robot arm; 214. a second mechanical arm; 216. a first drive lever; 218. a second drive lever; 220. a gripper; 222. a support; 224. a fixed jaw; 226. a movable jaw; 228. a third drive lever; 230. a rotating member; 240. a first fixed seat; 250. a second fixed seat; 300. a counterweight mechanism; 310. a balancing weight; 320. a slide rail; 330. a slider; 340. a fixed block; 350. a drive device; 400. a scissor lift device; 410. a lifting end; 420. a fixed end; 500. rotating the disc; 600. a movable seat; 610. a base; 620. a locking member; 630. a roller; 640. a support arm; 700. a mobile security net.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Referring to fig. 1 and 2, an embodiment of a maintenance fork truck platform 10 includes a work platform 100, a manipulator 200, and a counterweight mechanism 300, wherein the work platform 100 is configured to be disposed on a maintenance fork truck, and the work platform 100 includes a working end 110 and a counterweight end 120; the manipulator 200 comprises a support 210 and a gripper 220, wherein one end of the support 210 is fixedly connected to the work platform 100, the gripper 220 is movably connected to the other end of the support 210, and the support 210 is used for driving the gripper 220 to extend or retract towards the working end 110 of the work platform 100; the counterweight mechanism 300 is disposed at the counterweight end 120, and the counterweight mechanism 300 is used for adjusting the gravity center of the forklift platform 10 to maintain the balance of the work platform 100.

When the forklift inspection and trimming platform 10 is used, the operation platform 100 is fixed to the forklift inspection and trimming, so that the forklift inspection and trimming has the operation platform 100 which follows the operation, the operation platform 100 can be lifted efficiently, the manipulator 200 is arranged on the operation platform 100, the support 210 drives the gripper 220 to move relative to the working end 110 of the operation platform 100, the gripper can extend out of the working end 110 to grab goods, the counterweight mechanism 300 is arranged at the counterweight end 120 of the operation platform 100 to maintain the balance of the operation platform 100, the problem that the stress of the operation platform 100 is unstable due to the change of the gravity center when the gripper 220 grabs the goods is avoided, and the safety of operators under different operation conditions is ensured.

Referring to fig. 1, in some embodiments, the service forklift platform 10 further includes an ambulatory safety net 700, the ambulatory safety net 700 being slidably connected to the work platform 100. Specifically, the work platform 100 is provided with guide rails, and the mobile safety net 700 is enclosed in the work platform 100, so that safety guarantee can be provided for the operator on the work platform 100.

Referring to fig. 2 and 3, the support 210 includes a first arm 212, a second arm 214, a first driving lever 216 and a second driving lever 218, one end of the first arm 212 is rotatably connected to the work platform 100, the other end of the first arm 212 is rotatably connected to one end of the second arm 214, the gripper 220 is connected to the other end of the second arm 214, the first driving lever 216 is rotatably connected between the work platform 100 and the first arm 212, the second driving lever 218 is rotatably connected between the first arm 212 and the second arm 214, the first driving lever 216 is configured to drive the first arm 212 to swing with respect to the work platform 100, and the second driving lever 218 is configured to drive the second arm 214 to swing with respect to the first arm 212. This support 210 adopts two segmentation arm structures, and first arm 212 and second arm 214 are connected in rotation each other, and support through first actuating lever 216 and second actuating lever 218 respectively to realize two segmentation rotations, the operation scope of tongs 220 is wider, increases the working range of tongs 220.

Specifically, the middle of the work platform 100 is further provided with a first fixing seat 240, through which the first robot arm 212 is rotatably connected to the work platform 100. A second fixing seat 250 is further disposed between the middle of the working platform 100 and the working end 110, one end of the first driving rod 216 is rotatably connected to the working platform 100 through the second fixing seat 250, and the other end of the first driving rod 216 is fixedly connected to the middle of the first robot arm 212.

Optionally, a rotating member 230 is further included, the rotating member 230 is pivotally connected to an end of the second robot arm 214 adjacent to the hand grip 220, and the hand grip 220 is pivotally connected to the second robot arm 214 via the rotating member 230. The rotating member 230 can rotate according to the position and direction of the goods, so as to meet the operation of the gripper 220 under different angles, and improve the applicability.

Referring to fig. 4, the gripper 220 includes a support 222, a fixed jaw 224 and a movable jaw 226, the second robot arm 214 is connected to the support 222, the fixed jaw 224 is fixedly connected to the support 222, and the movable jaw 226 is openably and closably disposed on the fixed jaw 224. By actuating the moveable jaw 226 to expand or contract the hand grip 220, the size of the hand grip 220 may be easily adjusted depending on the size and shape of the goods.

Specifically, the support 222 is provided with a third driving rod 228, and the third driving rod 228 is used for driving the movable jaw 226 to open and close relative to the fixed jaw 224. Preferably, the number of the fixed claws 224 and the movable claws 226 is three, three fixed claws 224 are connected to a first fixed rod at intervals, three movable claws 226 are connected to a second fixed rod at intervals, and the hydraulic rod drives the second fixed rod to rotate so as to drive the movable claws 226 to open and close relative to the fixed claws 224.

Preferably, the first drive rod 216, the second drive rod 218, and the third drive rod 228 are hydraulic rods.

Referring to fig. 3, the maintenance scissors truck platform 10 further includes a scissors lifting device 400, the scissors lifting device 400 includes a lifting end 410 connected to the work platform 100, and the scissors lifting device 400 is used for driving the work platform 100 to lift. The scissor lift 400 can efficiently lift the work platform 100, so that the work platform 100 can reach a desired height.

Specifically, the scissors lifting device 400 is a rectangular scissors arm structure, and the scissors lifting device 400 is further provided with a hydraulic supporting device, and the scissors lifting device 400 can be driven to stretch and retract through the hydraulic supporting device, so that the height of the operation platform 100 can be adjusted, and the stability in the lifting process can be improved.

Referring to fig. 3, the maintenance forklift platform 10 further includes a rotating disc 500, the rotating disc 500 is rotatably connected to the lifting end 410, and the operation platform 100 is rotatably connected to the forklift lifting device 400 through the rotating disc 500. The working space of the work platform 100 is not limited by the arrangement of the rotary plate 500, thereby maximizing the working range.

Referring to fig. 5, the maintenance fork truck platform 10 further includes a movable base 600, the fork lift 400 further includes a fixed end 420, the fixed end 420 is fixedly connected to the movable base 600, the movable base 600 includes a base 610, a locking member 620 and a roller 630, the roller 630 is used for adjusting the position of the movable base 600, and the locking member 620 is used for locking the position of the movable base 600. Should remove seat 600 and should cut fork elevating gear 400 combination driving and cut fork truck, this inspection car can remove according to the demand, when needs snatch the goods, locks base 610 through this locking piece 620 to cut fork truck platform 10 with this maintenance and fix, improve this maintenance and cut the job stabilization nature when fork truck platform 10 snatchs.

Referring to fig. 5, the locking member 620 is a hydraulic support rod, the locking member 620 is telescopically disposed on the movable base 600, when the movable base 600 is in a movable state, the locking member 620 is retracted, and when the movable base 600 is in a fixed state, the locking member 620 extends outward and supports the movable base 600. Through set up hydraulic support pole in the edge that removes seat 600, the drive is this hydraulic support pole butt in ground after overhanging to avoid gyro wheel 630 and ground contact, thereby realize removing the locking of seat 600, this hydraulic support pole's support stable performance, simple structure.

Specifically, the movable base 600 further includes a supporting arm 640, one end of the supporting arm 640 extends out of the base 610, the other end of the supporting arm 640 is connected to the locking member 620,

referring to fig. 2, the counterweight mechanism 300 includes a counterweight 310 and a slide rail 320, the slide rail 320 is fixedly connected to the counterweight end 120, and the counterweight 310 is slidably connected to the slide rail 320. The counterweight 310 changes its position according to different operation loads, so as to satisfy the stress balance of the operation platform 100 under different operation loads of the gripper 220, and improve the safety and durability of the product.

Specifically, the counterweight mechanism 300 further includes two sliding blocks 330 and four fixing blocks 340, two ends of the counterweight block 310 are hung above the sliding blocks 330, and the sliding blocks 330 are slidably connected to the sliding rails 320. Four these fixed blocks 340 are two liang a set of fixed connection in the edge of this work platform 100, and this slide rail 320 is the lead screw, and two liang is provided with this lead screw between a set of fixed block 340, and one of them one end of two these lead screws all is connected with drive arrangement 350, and this lead screw wears to locate slider 330 and screw-thread fit connects, can drive this slider 330 when this lead screw of this drive arrangement 350 drive rotates and slide along the axial direction of lead screw. Preferably, the driving device 350 is a hydraulic motor.

In addition, referring to fig. 6, an embodiment further provides a counterweight calculation method, where the counterweight calculation is performed by the forklift truck platform 10 in any of the above embodiments, and the method includes the following steps:

solving the vertical distance between the gravity center of the balancing weight 310 and the supporting point of the maintenance fork truck closest to the balancing weight 310;

the position of the counterweight 310 is adjusted by the gravity center of the counterweight 310 and the vertical distance from the closest maintenance forklift fulcrum to the counterweight 310, so that the working platform 100 is in a balanced state.

The counterweight calculation method can calculate the required vertical distance between the counterweight 310 and the closest maintenance forklift fulcrum of the counterweight 310 according to the load of the grabbed goods, so as to adjust the position of the assembly block and maintain the stress balance of the operation platform 100 all the time.

Specifically, as shown in fig. 6, when the gripper 220 grabs a certain weight of goods, the following conditions need to be satisfied according to the moment balance equation:

F₁L₁+GL₄＝-F₂L₂+F₃(L₂+L₃) (1)

F₁(L₁+L₂)+G(L₂+L₄)-F₂L₂＝F₃L₃ (2)

F₁+G+F₃＝2F₂ (3)

solving the moment balance equation yields:

the step of solving the vertical distance between the gravity center of the balancing weight 310 and the supporting point of the maintenance forklift closest to the balancing weight 310 comprises the step of solving the vertical distance between the gravity center of the balancing weight 310 and the supporting point of the maintenance forklift closest to the balancing weight 310 through the formula (4). Wherein, F1 is the load of goods, L1 is the vertical distance between the center of gravity of the goods and the inspection scissor truck fulcrum O1 closest to the goods, L2 is the distance between two fulcrums O1 and O2 on the inspection scissor truck, F2 is the supporting reaction force of two fulcrums O1 and O2, F3 is the load of the counterweight 310, L3 is the vertical distance between the center of gravity of the counterweight 310 and the inspection scissor truck fulcrum O2 closest to the counterweight 310, L4 is the vertical distance between the center of gravity of the work platform 100 itself and the fulcrum O1, and G is the gravity of the work platform 100 itself.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.