Tunnel electric lift platform

Abstract

The utility model relates to hoist technology field discloses a kind of tunnel electric lifting platform, and the platform includes: side ladder part, is provided with two, two side ladder parts are symmetrically arranged;Self-adjusting cross tie, including several, self-adjusting cross tie is arranged between two side ladder parts, the both ends of self-adjusting cross tie are fixed with side ladder part, and self-adjusting cross tie is telescopic;Electric push rod, is provided with several, electric push rod is arranged at the top of two side ladder parts, and electric push rod is arranged at the upper portion of self-adjusting cross tie, electric push rod is telescopic;Floating middle platform, is fixed on electric push rod, and electric push rod drives floating middle platform to move up and down;Controller is used to control electric push rod drives floating middle platform to move up and down.The utility model not only guarantees the adaptability of equipment in narrow tunnel environment, but also improves installation efficiency by modular structure, and safety, flexibility and operation efficiency are considered.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, and more specifically, to an electric lifting platform for tunnels. Background Technology

[0002] Electrified railways require maintenance and upkeep of components such as tunnel structures and overhead contact line supports, which traditionally rely on manual labor or large maintenance vehicles.

[0003] Large-scale lifting equipment has disadvantages such as complex operating environment, concentration of construction teams of various trades, high maintenance costs, and tight access conditions; while ordinary construction tools have problems such as long setup time, frequent changes in maintenance positions, and limited effective work content.

[0004] Therefore, it is necessary to provide a tunnel electric lifting platform to solve the problem of low working efficiency of existing lifting equipment. Utility Model Content

[0005] In view of this, the present invention proposes an electric lifting platform for tunnels, which aims to solve the problem of low working efficiency of lifting equipment in the prior art.

[0006] This utility model proposes a tunnel electric lifting platform, comprising:

[0007] There are two side stair sections, which are arranged symmetrically.

[0008] The self-adjusting horizontal tie rod includes several of them. The self-adjusting horizontal tie rod is disposed between the two side ladders. Both ends of the self-adjusting horizontal tie rod are fixed to the side ladders, and the self-adjusting horizontal tie rod is telescopic.

[0009] Several electric push rods are provided. The electric push rods are located at the top of the two side ladders and at the upper part of the self-adjusting horizontal tie rod. The electric push rods are telescopic.

[0010] A floating platform is fixed to the electric push rod, which drives the floating platform to move up and down.

[0011] The controller is used to control the electric push rod to move the floating platform up and down.

[0012] Furthermore, the side ladder includes:

[0013] A bottom beam assembly and a movable frame, wherein the bottom beam assembly is disposed at the bottom of the movable frame and the bottom of the bottom beam assembly abuts against the top of the rail;

[0014] A side ladder is provided on the top of the movable frame. An electric push rod is fixed to the top of the side ladder, and a self-adjusting horizontal tie rod is also fixed on the side ladder.

[0015] A first ladder is provided on the movable frame, and the first ladder is also located on the side of the side ladder away from the self-adjusting horizontal tie rod;

[0016] The second ladder is fixed to the upper part of the side ladder plate, and the second ladder is also located on the side of the electric push rod away from the floating platform;

[0017] A number of horizontal tie rods are provided between the side ladder and the first ladder, and the horizontal tie rods are also provided between the first ladder and the second ladder.

[0018] The diagonal tie rods, including several, are disposed between the side ladder and the first ladder, and the horizontal tie rods are also disposed between the first ladder and the second ladder.

[0019] Furthermore, the aforementioned electric tunnel lifting platform also includes:

[0020] An extension platform is located on the side of the first ladder away from the electric push rod, and the extension platform includes a support plate, a protective frame, and diagonal support rods;

[0021] The support plate is horizontally fixed on the first ladder, the protective frame is set on the upper part of the support plate, one end of the inclined support rod is hinged to the bottom of the support plate, and the other end of the inclined support rod is hinged to the first ladder.

[0022] Furthermore, the floating platform includes:

[0023] The support frame is fixed to the electric push rod;

[0024] A support platform, mounted on the support frame;

[0025] A guardrail is installed on top of the support platform.

[0026] Compared with existing technologies, the advantages of this utility model are as follows: The lifting platform achieves precise lifting control through electric push rods. The linear drive characteristics of the electric push rods simplify the mechanical structure, reduce maintenance needs, improve the stability and operating efficiency of the lifting platform, reduce human operation risks, and improve construction safety; it is quick and portable, improving work efficiency and reducing maintenance costs. Furthermore, this utility model has a simple structure and is easy to lift, and can integrate multi-functional modules such as inspection and testing instruments. Simultaneously, the lifting platform of this utility model adopts a symmetrical double-sided ladder structure, enhancing overall stability and load-bearing capacity, while facilitating personnel passage from both sides; secondly, the self-adjusting horizontal tie rod design, through its telescopic characteristics, can adapt to different tunnel widths, maintaining structural rigidity while providing flexible adjustment functionality; multiple electric push rods arranged at the top, together with the floating platform, form a stable lifting system, enabling precise height adjustment to meet the needs of different working surfaces. The integrated controller makes the platform operation intelligent, allowing for precise control of the lifting process according to construction requirements. This combined design ensures the equipment's adaptability in narrow tunnel environments and improves installation efficiency through its modular structure. It is particularly suitable for high-altitude operations in complex tunnel conditions, balancing safety, flexibility, and operational efficiency. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This is a structural schematic diagram of the tunnel electric lifting platform provided in an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of the installation of the anti-tipping brake provided in an embodiment of the present utility model.

[0030] In the diagram, 100 is the side ladder; 110 is the bottom beam assembly; 120 is the movable frame; 130 is the side ladder; 140 is the first ladder; 150 is the second ladder; 160 is the horizontal tie rod; 170 is the diagonal tie rod; 200 is the self-adjusting horizontal tie rod; 300 is the electric push rod; 400 is the floating platform; 410 is the support frame; 420 is the support platform; 430 is the guardrail; 500 is the extension platform; 510 is the support plate; 520 is the protective frame; 530 is the diagonal support rod; 600 is the anti-tipping brake; 610 is the connecting tie rod; 620 is the fixed shell; 630 is the upper rail roller; 640 is the elastic fixing pin; 650 is the side clamping wheel; 660 is the upper ear connecting seat; and 670 is the upper connecting clamping hoop. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0032] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In some embodiments of this application, see Figure 1 As shown, this embodiment provides a tunnel electric lifting platform, including:

[0036] There are two side stair sections 100, which are symmetrically arranged.

[0037] The self-adjusting horizontal tie rod 200 includes several of them. The self-adjusting horizontal tie rod 200 is disposed between the two side ladders 100. Both ends of the self-adjusting horizontal tie rod 200 are fixed to the side ladders 100, and the self-adjusting horizontal tie rod 200 is telescopic.

[0038] Several electric push rods 300 are provided. The electric push rods 300 are located at the top of the two side ladders 100 and at the upper part of the self-adjusting horizontal tie rod 200. The electric push rods 300 are telescopic.

[0039] A floating platform 400 is fixed on the electric push rod 300, which drives the floating platform 400 to move up and down.

[0040] The controller is used to control the electric push rod 300 to drive the floating platform 400 to move up and down.

[0041] Understandably, the lifting platform achieves precise lifting control through the electric push rod 300. The linear drive characteristic of the electric push rod 300 simplifies the mechanical structure, reduces maintenance needs, improves the stability and operational efficiency of the lifting platform, reduces human error risks, and enhances construction safety. Its quick and portable design also improves work efficiency and reduces maintenance costs. Furthermore, this utility model features a simple structure and convenient lifting, and can integrate multi-functional modules such as inspection and testing instruments. Simultaneously, the lifting platform of this utility model adopts a symmetrical double-sided ladder structure 100, enhancing overall stability and load-bearing capacity, while facilitating personnel passage from both sides. Secondly, the self-adjusting horizontal tie rod 200 design, through its telescopic characteristics, can adapt to different tunnel widths, maintaining structural rigidity while providing flexible adjustment functionality. Multiple electric push rods 300 arranged at the top, together with the floating platform 400, form a stable lifting system, enabling precise height adjustment to meet the needs of different work surfaces. The integrated controller makes the platform operation intelligent, allowing for precise control of the lifting process according to construction requirements. This combined design ensures the equipment's adaptability in narrow tunnel environments and improves installation efficiency through its modular structure. It is particularly suitable for high-altitude operations in complex tunnel conditions, balancing safety, flexibility, and operational efficiency.

[0042] In some embodiments of this application, the side ladder 100 includes:

[0043] The bottom beam assembly 110 and the movable frame 120 are provided, wherein the bottom beam assembly 110 is disposed at the bottom of the movable frame 120 and the bottom of the bottom beam assembly 110 abuts against the top of the rail.

[0044] A side ladder 130 is disposed on the top of the movable frame 120. An electric push rod 300 is fixed on the top of the side ladder 130, and a self-adjusting horizontal tie rod 200 is also fixed on the side ladder 130.

[0045] The first ladder 140 is mounted on the movable frame 120, and the first ladder 140 is also located on the side of the side ladder 130 away from the self-adjusting horizontal tie rod 200;

[0046] The second ladder 150 is fixed on the upper part of the side ladder 130, and the second ladder 150 is also located on the side of the electric push rod 300 away from the floating platform 400.

[0047] A number of horizontal tie rods 160 are provided between the side ladder 130 and the first ladder 140. The horizontal tie rods 160 are also provided between the first ladder 140 and the second ladder 150.

[0048] The diagonal tie rod 170, including several, is disposed between the side ladder 130 and the first ladder 140, and the horizontal tie rod 160 is also disposed between the first ladder 140 and the second ladder 150.

[0049] Understandably, the bottom beam assembly 110, in conjunction with the movable frame 120, enables the entire platform to move flexibly, facilitating rapid repositioning within the tunnel. Specifically, the bottom beam assembly 110 serves as a beam, allowing the entire platform to rest on or move along rails. The modular combination of the side ladders 130 and the movable frame 120 ensures both structural strength and ease of disassembly and transportation. The intersecting arrangement of the transverse tie rods 160 and diagonal tie rods 170 forms a three-dimensional support network between the side ladders 130 and the ladder, significantly enhancing the overall structure's torsional resistance and stability, effectively resisting lateral forces during tunnel operations. This composite reinforcing rib layout significantly improves load-bearing capacity while maintaining lightweight design, ensuring structural stability during dynamic lifting and lowering. The rational spatial distribution of all functional components optimizes ergonomics and ensures high applicability of the equipment in narrow tunnel environments.

[0050] In some embodiments of this application, the tunnel electric lifting platform further includes:

[0051] An extension platform 500 is located on the side of the first ladder 140 away from the electric push rod 300. The extension platform 500 includes a support plate 510, a protective frame 520, and an inclined support rod 530.

[0052] The support plate 510 is horizontally fixed on the first ladder 140, the protective frame 520 is disposed on the upper part of the support plate 510, one end of the inclined support rod 530 is hinged to the bottom of the support plate 510, and the other end of the inclined support rod 530 is hinged to the first ladder 140.

[0053] Understandably, the extension platform 500 expands the working area through the support plate 510, providing construction workers with a more spacious and stable operating space. Meanwhile, the protective frame 520 effectively ensures the safety of high-altitude operations, preventing accidental falls of personnel or tools. Furthermore, the extension platform 500 facilitates loading and unloading of materials on the support plate 510. The inclined support rod 530 connects the support plate 510 and the first ladder 140 via a hinge, allowing for flexible adjustment of the extension platform 500's unfolding angle to adapt to different working conditions. It also forms a stable triangular support structure under load, significantly enhancing the platform's bending strength and load-bearing capacity. Maintaining the overall structural lightness while ensuring the stability of the extension section, it is particularly suitable for temporary material storage or multi-person collaborative operations in space-constrained tunnel environments, greatly improving construction efficiency and safety.

[0054] In some embodiments of this application, the floating platform 400 includes:

[0055] Support frame 410 is fixed on the electric push rod 300;

[0056] Support platform 420 is mounted on support frame 410;

[0057] The guardrail 430 is installed on the top of the support platform 420.

[0058] Understandably, the connection between the support frame 410 and the electric push rod 300 ensures the stability of power transmission, making the platform lifting process smooth and reliable. The support platform 420 adopts a frame structure, which reduces the overall weight while ensuring load-bearing strength, providing a safe and reliable working surface for construction personnel. The guardrail 430 installed at the top provides effective fall protection, significantly improving the safety of high-altitude operations. This utility model is easy to disassemble and maintain, and maximizes the safety of operators while ensuring load-bearing performance, making it particularly suitable for high-altitude operation scenarios that require frequent lifting.

[0059] Preferably, the controller includes:

[0060] The data acquisition unit is used to acquire data from the floating platform 400 and environmental data; wherein the data from the floating platform 400 includes load data and vibration data; and the environmental data includes wind speed and visibility.

[0061] The processing unit is used to determine whether the working conditions of the lifting platform are met based on the wind speed and visibility. If the working conditions of the lifting platform are met, the unit determines the moving speed of the floating platform 400 based on the load data, so that the floating platform 400 moves to the designated position at the moving speed.

[0062] The processing unit is also used to determine whether to stop the operation of the electric push rod 300 based on the vibration data.

[0063] Understandably, by acquiring multi-dimensional data from the floating platform's 400° data load and environmental data in real time, a comprehensive understanding of the operating environment is achieved. The processing unit, based on intelligent judgment of wind speed and visibility, can automatically identify severe weather conditions, effectively preventing safety accidents caused by environmental factors. The dynamic speed adjustment function automatically optimizes the platform's movement speed according to real-time load, ensuring operational safety under heavy loads while improving work efficiency under light loads. The vibration monitoring system provides anomaly warnings for the platform; when vibrations exceeding safety thresholds are detected, it can automatically shut down, forming a multi-layered safety protection mechanism. This data-driven intelligent control significantly improves the operational safety and reliability of the equipment in complex tunnel environments, while reducing the workload of operators, achieving an optimal balance between safety and work efficiency.

[0064] Specifically, when the processing unit determines whether the working conditions of the lifting platform are met based on the wind speed and visibility, it includes:

[0065] Collect wind speed and visibility data, and set the maximum wind speed and minimum visibility values;

[0066] If the wind speed is greater than or equal to the maximum wind speed, or the visibility is less than or equal to the minimum visibility, then it is determined that the working conditions of the lifting platform are not met.

[0067] If the wind speed is less than the maximum wind speed and the visibility is greater than the minimum visibility, then the working conditions of the lifting platform are met.

[0068] Understandably, by setting clear upper limits for wind speed and lower limits for visibility, a dual-condition judgment logic is employed: when wind speed exceeds the limit or visibility is insufficient, it is automatically determined to be a dangerous condition, and platform operation is prohibited; operation is only permitted when both wind speed and visibility simultaneously meet safe limits. This automated decision-making mechanism based on objective parameters eliminates the subjectivity and lag of human judgment, effectively preventing platform instability caused by strong winds or accidents caused by insufficient visibility. The standardized design of the threshold judgment mode ensures the reliability of safety control and facilitates parameter adjustment according to the characteristics of different tunnel environments, making the lifting platform both rigorous and adaptable, providing intelligent environmental safety assurance for high-altitude operations.

[0069] Furthermore, the processing unit is used to determine the moving speed of the floating platform 400 based on the load data, and when the floating platform 400 moves to the designated position at the moving speed, it includes:

[0070] Set a load safety range. If the load data is greater than or equal to the maximum value of the load safety range, then determine that the floating platform 400's movement speed is zero and issue a load reduction warning.

[0071] If the load data is within the load safety range, then the moving speed is determined as the first speed;

[0072] If the load data is less than the minimum value of the load safety range, then the moving speed is determined to be the second speed;

[0073] Wherein, the first speed is less than the second speed.

[0074] Understandably, the load-level control strategy achieves an optimized balance between safety and work efficiency. A three-stage speed control mechanism is employed: when overload is detected, the platform is immediately locked and an alarm is issued, effectively preventing structural overload risks; a conservative first speed is used within the standard load range to ensure stability; and a faster second speed is activated under light load conditions, significantly improving work efficiency. This dynamic speed adjustment scheme based on real-time load data avoids the limitations of traditional "one-size-fits-all" speed settings and enhances inherent safety through automatic overload protection. The inverse correlation design between speed and load conforms to mechanical principles, ensuring the platform maintains optimal operating conditions under different workloads. This guarantees a safety margin under heavy loads while fully utilizing performance potential under light loads, achieving intelligent and differentiated speed management.

[0075] Specifically, the processing unit is also used to determine whether to stop the operation of the electric push rod 300 based on vibration data, including:

[0076] Set a maximum vibration value and a vibration limit value, wherein the maximum vibration value is greater than the vibration limit value;

[0077] If the vibration data is greater than or equal to the maximum vibration value, then it is determined that the electric push rod 300 should be stopped immediately.

[0078] If the vibration data is less than the maximum vibration value, but greater than or equal to the vibration limit value, then the duration of continuous vibration is collected, and it is determined whether to stop the operation of the electric push rod 300 based on the duration of continuous vibration.

[0079] If the vibration data is less than the vibration limit value, it is determined that the moving speed should be adjusted by adjusting the adjustment coefficient.

[0080] Where 1 > adjustment coefficient > 0, and the adjusted movement speed is the product of the original movement speed and the adjustment coefficient.

[0081] Understandably, a three-tiered response mechanism achieves a perfect balance between safety and operational efficiency. It employs a dual-threshold (maximum vibration value and vibration limit value) graded early warning strategy: immediate shutdown upon detection of extreme vibration ensures rapid protection in emergencies; duration judgment is introduced for moderate vibration to prevent accidental shutdowns and cumulative damage; and dynamic speed reduction coefficients are used for flexible adjustment during minor vibrations, maintaining operational continuity while minimizing risk. This progressive response logic innovatively incorporates both vibration amplitude and duration parameters into the decision-making system, significantly improving the accuracy of fault diagnosis. In particular, the introduction of adjustment coefficients enables refined control of operating speed, allowing the platform to automatically optimize operating parameters based on real-time vibration conditions, maximizing operational progress while ensuring structural safety.

[0082] Specifically, when the vibration data is less than the maximum vibration value but greater than or equal to the vibration limit value, the duration of continuous vibration is collected, and the determination of whether to stop the operation of the electric push rod 300 is based on the duration of continuous vibration includes:

[0083] Set a duration threshold. If the duration of continuous vibration is greater than or equal to the duration threshold, then determine to stop the operation of the electric push rod 300.

[0084] If the duration of continuous vibration is less than the duration threshold, it is determined that the moving speed should be adjusted by an adjustment coefficient.

[0085] Set a safe duration range value. If the duration of continuous vibration is greater than the maximum value of the safe duration range, the moving speed is adjusted by a first adjustment coefficient.

[0086] If the duration of continuous vibration is within the safe duration range, the moving speed is adjusted by the second adjustment coefficient;

[0087] If the duration of continuous vibration is less than the minimum value of the safe duration range, the moving speed is adjusted by a third adjustment coefficient.

[0088] The adjustment coefficient ranges from 1 to 0, and the adjusted moving speed is the product of the original moving speed and the adjustment coefficient.

[0089] Understandably, the multi-level intelligent control strategy achieves an optimal balance between safety protection and operational efficiency. By setting duration thresholds and safe duration ranges, a refined three-level vibration response mechanism is constructed: when vibration exceeds limits but does not reach the maximum value, the system considers not only vibration amplitude but also duration as a key judgment criterion, significantly reducing the probability of misjudgment. Three differentiated adjustment coefficients (first, second, and third adjustment coefficients) are used to achieve gradual speed adjustment, forming a three-dimensional control model of "vibration intensity-duration-speed adjustment." This avoids the operational interruptions caused by simple start-stop operations in traditional systems and effectively controls risks through precise speed decay. The adjustment coefficients are strictly ordered (1 > third > second > first > 0) to ensure that the greater the vibration and the longer the duration, the more significant the speed reduction, achieving optimal coordination between safety response and process continuity, and significantly improving the adaptability and reliability of the equipment under complex operating conditions.

[0090] On the other hand, the control method for the tunnel electric lifting platform includes the following steps:

[0091] S100. Acquire floating platform data and environmental data; wherein, the floating platform data includes load data and vibration data; the environmental data includes wind speed and visibility;

[0092] S200. Determine whether the working conditions of the lifting platform are met based on the wind speed and visibility. If the working conditions of the lifting platform are met, determine the moving speed of the floating platform based on the load data, and move the floating platform to the designated position at the moving speed.

[0093] S300: Determine whether to stop the electric actuator based on vibration data.

[0094] Understandably, this invention achieves a comprehensive improvement in both safety and operational efficiency. It integrates a triple safety judgment mechanism: environmental monitoring (wind speed and visibility), load sensing, and vibration analysis. First, external risk factors are screened and eliminated through environmental data to ensure the safety of basic operations. Second, the moving speed is dynamically adjusted based on load data to achieve optimized control of "low speed under heavy load and high speed under light load." Finally, vibration monitoring constructs the last line of defense for safety. This hierarchical and progressive control logic forms a complete closed-loop safety management system, avoiding the limitations of single-parameter judgment and improving response accuracy through collaborative analysis between parameters. In particular, the hierarchical design, which uses environmental factors as a prerequisite, load as the basis for speed adjustment, and vibration as the standard for emergency braking, makes the control system preventative, adaptable, and reliable, significantly reducing the risks of high-altitude tunnel operations while ensuring construction efficiency.

[0095] Preferably, each electric actuator is equipped with a manual crank. The manual lifting rod, driven by a mechanical lifting mechanism, has the following significant advantages: 1. Rapid lifting, smooth operation, and reliable performance; 2. Easy installation, simple use and maintenance; 3. High load capacity and high lifting height; 4. Strong environmental adaptability and long service life. The electric actuator of this invention is made of high-strength aluminum alloy and has advantages such as small size, light weight, high load capacity, low noise, and smooth operation.

[0096] Preferably, this utility model employs an anti-tipping brake 600. The main feature of the anti-tipping brake 600 is its inner and outer rail locking design, which secures the steel rail and the electric lifting platform together as a single unit. This locking is more robust and reliable, and it is self-locking, preventing it from loosening on its own. Through multiple tests, this device has successfully passed various obstacles such as axle counters, turnouts, and air-raid shelter doors. The anti-tipping brake 600 uses a steel frame, with two insulating plates installed on the shell to ensure the electric lifting platform is securely locked and prevents short circuits. The main body of the anti-tipping brake 600 is insulated from the steel rail. To accommodate different specifications and models of ladder truck chassis, the connecting rod of the anti-tipping brake 600 features a telescopic design for easy adjustment.

[0097] See Figure 2 , Figure 2 This is an installation diagram of the utility model anti-tipping brake 600. Specifically, the anti-tipping brake 600 includes a connecting rod 610, a fixed housing 620, an upper rail roller 630, an elastic fixing pin 640, and side clamping wheels 650. One end of the connecting rod 610 is connected to the side ladder 100 through an upper connecting clamp 670. The connecting rod 610 is hinged to the upper ear connecting seat 660 on the fixed housing 620. The fixed housing 620 has an opening at the bottom and is used to place on the rail. The upper rail roller 630 is disposed inside the fixed housing 620 and contacts the rail to slide on it. The elastic fixing pin 640 is disposed on both sides of the lower part of the fixed housing 620. The side clamping wheels 650 are disposed at one end of the elastic fixing pin 640 and abut against the side wall of the rail.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A tunnel electric lifting platform, characterized in that, include: There are two side stair sections, which are arranged symmetrically. The self-adjusting horizontal tie rod includes several of them. The self-adjusting horizontal tie rod is disposed between the two side ladders. Both ends of the self-adjusting horizontal tie rod are fixed to the side ladders, and the self-adjusting horizontal tie rod is telescopic. Several electric push rods are provided. The electric push rods are located at the top of the two side ladders and at the upper part of the self-adjusting horizontal tie rod. The electric push rods are telescopic. A floating platform is fixed to the electric push rod, which drives the floating platform to move up and down. The controller is used to control the electric push rod to move the floating platform up and down.

2. The tunnel electric lifting platform according to claim 1, characterized in that, The side ladder includes: A bottom beam assembly and a movable frame, wherein the bottom beam assembly is disposed at the bottom of the movable frame and the bottom of the bottom beam assembly abuts against the top of the rail; A side ladder is provided on the top of the movable frame. An electric push rod is fixed to the top of the side ladder, and a self-adjusting horizontal tie rod is also fixed on the side ladder. A first ladder is provided on the movable frame, and the first ladder is also located on the side of the side ladder away from the self-adjusting horizontal tie rod; The second ladder is fixed to the upper part of the side ladder plate, and the second ladder is also located on the side of the electric push rod away from the floating platform; A number of horizontal tie rods are provided between the side ladder and the first ladder, and the horizontal tie rods are also provided between the first ladder and the second ladder. The diagonal tie rods, including several, are disposed between the side ladder and the first ladder, and the horizontal tie rods are also disposed between the first ladder and the second ladder.

3. The tunnel electric lifting platform according to claim 2, characterized in that, The aforementioned electric tunnel lifting platform also includes: An extension platform is located on the side of the first ladder away from the electric push rod, and the extension platform includes a support plate, a protective frame, and diagonal support rods; The support plate is horizontally fixed on the first ladder, the protective frame is set on the upper part of the support plate, one end of the inclined support rod is hinged to the bottom of the support plate, and the other end of the inclined support rod is hinged to the first ladder.

4. The tunnel electric lifting platform according to claim 3, characterized in that, The floating platform includes: The support frame is fixed to the electric push rod; A support platform, mounted on the support frame; A guardrail is installed on top of the support platform.

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