A high-speed railway contact network erection platform

Abstract

The present invention relates to the technical field of high-speed railway contact network construction equipment, and in particular to a high-speed railway contact network erection platform, which is used to solve the problem that a hydraulic arm stalls and swings down due to an accident. The platform comprises a platform mechanism and a supporting mechanism, wherein the supporting mechanism comprises a first hydraulic rod, one end of the first hydraulic rod is hinged to a rotating seat, and the other end of the first hydraulic rod is hinged to one of the groups of hydraulic arms, an oil box is connected to the rotating seat, and a first pipeline is connected between the first hydraulic rod and the oil box; the resistance of the hydraulic oil flowing in the oil box increases with the flow rate of the hydraulic oil; when the hydraulic arm stalls and swings down, the first hydraulic rod is squeezed and contracted, and the resistance increases when the flow rate of the hydraulic oil increases, thereby reducing the swing speed of the hydraulic arm; the platform can effectively reduce the swing speed of the hydraulic arm by automatically adjusting the flow rate and resistance of the hydraulic oil, thereby gaining precious time for operators to escape, and greatly reducing the safety risks that may occur during the operation.

Description

Technical Field

[0001] The invention relates to the technical field of high-speed railway contact network construction equipment, in particular to a high-speed railway contact network erection platform. Background Art

[0002] During the installation and maintenance of high-speed railway contact networks, the height, position and stability of the work platform are crucial to work efficiency and the safety of operators. In order to meet the needs of constantly adjusting the height and position of the work platform while ensuring the stability and safety of the operation process, the industry has been exploring more efficient and safer work platform technologies.

[0003] Traditional aerial work platforms, such as scaffolding or ordinary lifting platforms, can meet basic aerial work needs, but they are obviously insufficient in height adjustment, positioning, and the ability to respond to emergencies. Especially in the erection of high-speed railway contact networks, these traditional platforms are difficult to quickly and accurately adjust to the required position, and in emergency situations, such as the hydraulic arm suddenly losing control and swinging down, the safety of the operators will be seriously threatened.

[0004] In order to improve work efficiency and safety, modern high-speed railway contact network erection platforms adopt more advanced technologies and design concepts. For example, the height and position of the workbench are adjusted by the extension and swing of the hydraulic arm. This design not only improves the flexibility and accuracy of the adjustment, but also enhances the stability of the platform to a certain extent. However, even such an advanced platform still requires additional safety mechanisms to protect the operators in the face of emergencies such as the hydraulic arm stalling and swinging down. Summary of the invention

[0005] The invention provides a high-speed railway contact network erection platform to solve the problem that a hydraulic arm may stall and swing downward due to an accident.

[0006] In order to alleviate the above technical problems, the technical solution provided by the present invention is:

[0007] A high-speed railway contact network erection platform, comprising a platform mechanism, the platform mechanism comprising a rotating seat, two groups of parallel hydraulic arms are hinged on the rotating seat, and the top ends of the two groups of hydraulic arms are hinged to a workbench, and also comprising a supporting mechanism, the supporting mechanism comprising a first hydraulic rod, one end of the first hydraulic rod is hinged to the rotating seat, and the other end of the first hydraulic rod is hinged to one of the groups of hydraulic arms, the rotating seat is connected to an oil box, and a first pipeline is connected between the first hydraulic rod and the oil box;

[0008] The resistance of the hydraulic oil flowing in the oil box increases with the flow rate of the hydraulic oil;

[0009] When the hydraulic arm stalls and swings downward, the first hydraulic rod is squeezed and contracted, so that the flow rate of the hydraulic oil increases. When the flow rate of the hydraulic oil increases, the resistance increases, so that the swing speed of the hydraulic arm decreases.

[0010] Furthermore, the support mechanism further comprises a first piston cylinder, the first piston cylinder is fixedly connected to the upper part of the oil box, the first piston cylinder is provided with two ports, and a first piston rod and a pressure rod are respectively slidably connected in the two ports, the space between the first piston rod and the pressure rod is filled with a non-Newtonian fluid, and a second pipe is connected to the side wall of the first piston cylinder;

[0011] A slide plate is slidably connected in the oil box, and the bottom end of the first piston rod is connected to the slide plate. When the first hydraulic rod is quickly shortened, the hydraulic oil is quickly discharged into the oil box, so that the slide plate rises quickly to make the first piston rod move up quickly, so that the non-Newtonian fluid solidifies to prevent the slide plate from continuing to move up.

[0012] Furthermore, the platform mechanism further comprises a motor connected to the rotating seat, the output end of the motor is connected to a worm, and the two groups of hydraulic arms are both connected to a worm wheel meshing with the worm;

[0013] The first pipeline is provided with a first solenoid valve, and the first solenoid valve is opened when the motor is started.

[0014] Furthermore, the support mechanism further comprises an adjustment box, the adjustment box is connected to the first pipeline and is located between the first solenoid valve and the first hydraulic rod, the rotating seat is fixedly connected with a bracket, the bracket is connected with a small hydraulic rod, the output end of the small hydraulic rod is connected with a piston plate, and the piston plate slides in the adjustment box;

[0015] When the first solenoid valve is closed, the small hydraulic rod extends, so that the hydraulic oil in the regulating box flows to the first hydraulic rod to extend the first hydraulic rod slightly, so that the first hydraulic rod pushes the hydraulic arm to swing upward slightly to reduce the meshing force between the worm wheel and the worm.

[0016] Furthermore, it also includes a first deceleration mechanism, which includes a vertical frame connected to the rotating seat, a vertical rod connected to the top of the pressure rod, a diameter of the vertical rod is smaller than that of the pressure rod, a spring is sleeved on the vertical rod, two ends of the spring are respectively abutted against the vertical rod and the vertical frame, and when the slide plate moves up quickly, the vertical rod is driven to compress the spring and move up to the vertical frame;

[0017] The rotating seat is connected to a mounting seat, a second hydraulic rod is connected to the middle of the mounting seat, an output end of the second hydraulic rod is connected to a first friction block, and when the vertical rod moves upward, the second hydraulic rod extends so that the first friction block abuts against the worm gear, thereby slowing down the downward swing speed of the hydraulic arm.

[0018] Furthermore, the first deceleration mechanism further comprises a third hydraulic rod, the third hydraulic rod is connected to the vertical frame, the output end of the third hydraulic rod is connected to a wedge, the top end of the pressure rod is connected to a truncated cone column, and the wedge is attached to the side of the truncated cone column;

[0019] An elastic tube is connected between the third hydraulic rod and the second hydraulic rod. When the pressure rod moves upward, the cone column pushes the wedge block to shorten the third hydraulic rod, so that the hydraulic oil is transmitted to the second hydraulic rod to make the first friction block abut against the worm gear.

[0020] Furthermore, it also includes a second deceleration mechanism, which includes a second friction block, which slides vertically on the upper part of the rotating seat. A friction rod is connected to the hinge between the hydraulic arm and the rotating seat. When the first friction block abuts against the worm gear, the second friction block moves up and abuts against the friction rod, so that the downward swing speed of the hydraulic arm is reduced.

[0021] Furthermore, the second deceleration mechanism also includes a third pipeline connected to the hydraulic arm, and a second solenoid valve is provided on the third pipeline. When the second hydraulic rod is extended, the second solenoid valve opens, so that the hydraulic oil in the hydraulic arm is discharged, so that the hydraulic arm is shortened and the workbench is lowered.

[0022] Furthermore, a fourth hydraulic rod is connected to the rotating seat, the second friction block is connected to the output end of the fourth hydraulic rod, and the third pipeline is communicated with the fourth hydraulic rod.

[0023] Furthermore, the fourth hydraulic rod is connected to an oil drain pipe, and the inner diameter of the oil drain pipe is smaller than that of the third pipeline.

[0024] The beneficial effects of the present invention are analyzed as follows:

[0025] A high-speed railway contact network erection platform comprises a platform mechanism, the platform mechanism comprises a rotating seat, two groups of parallel hydraulic arms are hinged on the rotating seat, the top ends of the two groups of hydraulic arms are hinged to a workbench, and the support mechanism comprises a first hydraulic rod, one end of the first hydraulic rod is hinged to the rotating seat, and the other end of the first hydraulic rod is hinged to one of the groups of hydraulic arms, an oil box is connected to the rotating seat, and a first pipeline is connected between the first hydraulic rod and the oil box; the resistance of the hydraulic oil flowing in the oil box increases with the flow rate of the hydraulic oil; when the hydraulic arm loses speed and swings down, the first hydraulic rod is squeezed and contracted to increase the flow rate of the hydraulic oil, and the resistance increases when the flow rate of the hydraulic oil increases, thereby reducing the swing speed of the hydraulic arm.

[0026] The swivel seat is connected to the load-bearing cable erection vehicle, and the first hydraulic rod can be extended and retracted as the angle of the hydraulic arm changes, so that the hydraulic oil can flow between the first hydraulic rod and the oil box. During the normal adjustment of the angle of the hydraulic arm, the angle of the hydraulic arm changes slowly, thereby causing the flow rate of the hydraulic oil flowing into or out of the first hydraulic rod to be slow. When a failure occurs in the device and the hydraulic arm stalls and swings down, the first hydraulic rod is subjected to increased pressure from the hydraulic arm. At this time, the shortening speed of the first hydraulic rod increases, thereby accelerating the outflow speed of the hydraulic oil in the first hydraulic rod. When the flow rate of the hydraulic oil accelerates, the device controls the increase in the flow resistance of the hydraulic oil, thereby reducing the swing speed of the hydraulic arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the platform mechanism of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the oil box of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the support mechanism of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the first speed reduction mechanism of the present invention;

[0033] Figure 6 It is a schematic structural diagram of the second speed reduction mechanism of the present invention.

[0034] icon:

[0035] 100, platform mechanism; 110, rotating seat; 120, motor; 130, worm; 140, hydraulic arm; 150, worm gear; 160, workbench; 200, supporting mechanism; 210, first hydraulic rod; 220, oil box; 221, mounting plate; 222, slide plate; 230, first pipeline; 231, first solenoid valve; 240, regulating box; 241, bracket; 242, small hydraulic rod; 243, piston plate; 250, first piston cylinder; 251, first piston rod; 252, pressure rod; 253, vertical rod; 254 , spring; 260, second piston cylinder; 261, second pipeline; 262, second piston rod; 300, first reduction mechanism; 301, vertical frame; 310, mounting seat; 320, second hydraulic rod; 330, cylinder rod; 340, first friction block; 350, third hydraulic rod; 360, wedge block; 370, truncated cone column; 380, elastic tube; 400, second reduction mechanism; 410, friction rod; 420, third pipeline; 430, second solenoid valve; 440, fourth hydraulic rod; 450, oil drain pipe; 460, second friction block. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0039] like Figure 1-Figure 6 As shown, a high-speed railway contact network erection platform includes a platform mechanism 100, the platform mechanism 100 includes a rotating seat 110, two groups of parallel hydraulic arms 140 are hinged on the rotating seat 110, and the top ends of the two groups of hydraulic arms 140 are hinged to a workbench 160. The support mechanism 200 also includes a first hydraulic rod 210, one end of the first hydraulic rod 210 is hinged to the rotating seat 110, and the other end of the first hydraulic rod 210 is hinged to one of the groups of hydraulic arms 140. An oil box 220 is connected to the rotating seat 110, and a first pipe 230 is connected between the first hydraulic rod 210 and the oil box 220; the resistance of the hydraulic oil flowing in the oil box 220 increases with the flow rate of the hydraulic oil; when the hydraulic arm 140 stalls and swings down, the first hydraulic rod 210 is squeezed and contracted to increase the flow rate of the hydraulic oil. When the flow rate of the hydraulic oil increases, the resistance increases, so that the swing speed of the hydraulic arm 140 decreases.

[0040] The working mechanism of the high-speed railway contact network erection platform provided in this embodiment is as follows:

[0041] The rotating seat 110 is connected to the load-bearing cable erecting vehicle, and the driving device drives the rotating seat 110 to rotate on the load-bearing cable erecting vehicle, so as to adjust the direction of the workbench 160. The extension and retraction of the hydraulic arm 140 and the change of its swing angle change the height of the workbench 160. The hinged parts of the two groups of hydraulic arms 140 and the rotating seat 110 are located on the same horizontal plane. The hinged parts of the two groups of hydraulic arms 140 and the workbench 160 are also located on the same horizontal plane, and the extension lengths and swing angles of the two groups of hydraulic arms 140 are always equal, thereby ensuring that the height of the workbench 160 can always be in a horizontal state when adjusting. One end of the first hydraulic rod 210 is hinged to one of the groups of hydraulic arms 140, and the other end is hinged to the rotating seat 110. , forming a triangle, providing stable support for the hydraulic arm 140. During the angle adjustment process of the hydraulic arm 140, the first hydraulic rod 210 can be extended and retracted as the angle of the hydraulic arm 140 changes, so that the hydraulic oil can flow between the first hydraulic rod 210 and the oil box 220. During the normal adjustment of the angle of the hydraulic arm 140, the angle of the hydraulic arm 140 changes slowly, thereby causing the flow rate of the hydraulic oil flowing into or out of the first hydraulic rod 210 to be slow. When a failure occurs in the device and the hydraulic arm 140 stalls and swings downward, the first hydraulic rod 210 is subjected to the increased pressure of the hydraulic arm 140. At this time, the shortening speed of the first hydraulic rod 210 increases, thereby accelerating the outflow speed of the hydraulic oil in the first hydraulic rod 210.

[0042] In order to reduce the shortening speed of the first hydraulic rod 210 to ensure that the injuries to the operators are reduced, one implementation method is to set a flow meter on the first pipeline 230 connecting the oil box 220 and the first hydraulic rod 210 to detect the flow of hydraulic oil. In addition, a solenoid valve is set on the first pipeline 230. The solenoid valve remains in a normally open state under normal circumstances. When the flow meter detects a sudden increase in the flow rate and flow velocity of the hydraulic oil, the signal is fed back to the control system. After receiving the signal, the control system controls the opening of the solenoid valve to decrease. The opening reduction of the solenoid valve is divided into a semi-closed state and a fully closed state. In the semi-closed state, the hydraulic oil is allowed to flow, but the reduced opening slows down the flow speed of the hydraulic oil, thereby reducing the shortening speed of the first hydraulic rod 210. When fully closed, the hydraulic oil cannot flow in the first pipeline. The hydraulic fluid flows in the channel 230, so that the first hydraulic rod 210 is no longer shortened. The control mechanism of the fully closed and semi-closed states is that the control system first receives the flow increase signal fed back by the flow meter, and then detects the height of the workbench 160. When the height of the workbench 160 exceeds the set value, the control system controls the electromagnetic valve to be in a semi-closed state, so that the first hydraulic rod 210 is slowly shortened to lower the height of the workbench 160, so that the operator can subsequently escape, avoiding the operator being trapped at high altitude and causing subsequent accidents. When the height of the workbench 160 is lower than the set value, the operator can climb out of the workbench 160 at this time, and the electromagnetic valve is in a fully closed state. At this time, it is avoided that the workbench 160 continues to lower its height during the escape process, causing it to fall on the operator or other accidents.

[0043] Regarding the structure of the support mechanism 200, specifically:

[0044] The support mechanism 200 also includes a first piston cylinder 250, which is fixedly connected to the upper part of the oil box 220. The first piston cylinder 250 is provided with two ports, and the first piston rod 251 and the pressure rod 252 are respectively slidably connected in the two ports. The space between the first piston rod 251 and the pressure rod 252 is filled with a non-Newtonian fluid, and a second pipe 261 is connected to the side wall of the first piston cylinder 250; a slide plate 222 is slidably connected in the oil box 220, and the bottom end of the first piston rod 251 is connected to the slide plate 222. When the first hydraulic rod 210 is rapidly shortened, the hydraulic oil is rapidly discharged into the oil box 220, so that the slide plate 222 rapidly rises to enable the first piston rod 251 to rapidly move upward, so that the non-Newtonian fluid solidifies to prevent the slide plate 222 from continuing to move upward.

[0045] In order to reduce the shortening speed of the first hydraulic rod 210 to ensure that the injuries to the operators are reduced, another implementation method is to use a non-Newtonian fluid to reduce the flow speed of the hydraulic oil or prevent the hydraulic oil from continuing to flow. Specifically, when the hydraulic arm 140 stalls and swings down, the shortening speed of the first hydraulic rod 210 increases, thereby increasing the flow rate of the hydraulic oil. At this time, the hydraulic oil quickly flows into the oil box 220, so that the slide plate 222 in the oil box 220 is quickly lifted up, thereby increasing the upward movement speed of the first piston rod 251. The first piston rod 251 slides in the first piston cylinder 250. Thanks to the characteristics of the non-Newtonian fluid, when the first piston rod 251 slides up quickly to squeeze the non-Newtonian fluid, the non-Newtonian fluid solidifies. At this time, the fluidity of the non-Newtonian fluid becomes poor, thereby preventing the first piston rod 251 from moving upward, and then the sliding of the slide plate 222 is blocked, which causes the oil box 220 to slide upward. 0 is blocked from increasing and cannot accommodate more hydraulic oil, which makes it difficult for the hydraulic oil to flow into the oil box 220. At this time, the shortening speed of the first hydraulic rod 210 is reduced, thereby continuing to provide support for the stalled hydraulic arm 140. The stalling of the hydraulic arm 140 makes the first hydraulic rod 210 basically bear the gravity of the hydraulic arm 140 and the workbench 160, and then these gravity will act on the non-Newtonian fluid in the first piston cylinder 250 after transmission. The non-Newtonian fluid solidifies after being subjected to a large force at the moment of stall, and the force it bears in the subsequent process is uniform, but the non-Newtonian fluid is still subjected to a large pressure, and the fluidity of the non-Newtonian fluid itself is not high, which makes the slide plate 222 in a state of slowly moving upward at this time, thereby ensuring that the hydraulic arm 140 slowly swings down to lower the height of the workbench 160, so that the operator can get out of trouble.

[0046] Regarding the structure of the platform mechanism 100, specifically:

[0047] The platform mechanism 100 also includes a motor 120 connected to the rotating seat 110, the output end of the motor 120 is connected to a worm 130, and the two sets of hydraulic arms 140 are both connected to a worm gear 150 meshing with the worm 130; a first solenoid valve 231 is provided on the first pipeline 230, and the first solenoid valve 231 opens when the motor 120 is started.

[0048] When the motor 120 is started, the worm 130 at its output end rotates, and the rotation of the worm 130 drives the worm wheel 150 meshing therewith to rotate, thereby causing the two groups of hydraulic arms 140 to swing synchronously. The worm wheel 150 cooperates with the worm 130 to increase the torque output from the motor 120 to the hydraulic arm 140. At the same time, the self-locking function of the worm wheel 150 and the worm 130 enables the hydraulic arm 140 to maintain its angle unchanged when the motor 120 stops running. When the control system detects that the motor 120 is started, it controls the first solenoid valve 231 to open, so that the hydraulic oil can flow in the first pipeline 230, thereby ensuring that the extension and retraction of the first hydraulic rod 210 is not blocked. When the hydraulic arm 140 stalls, the control system also controls the first solenoid valve 231 to maintain an open state. At this time, even if the motor 120 stops running, the first solenoid valve 231 is still open, thereby preventing the workbench 160 from staying in the air and posing a safety hazard.

[0049] A mounting plate 221 is also connected to the port of the oil box 220, the first piston cylinder 250 is fixedly connected to the mounting plate 221, and the mounting plate 221 is also connected to the second piston cylinder 260, a second piston rod 262 is slidably connected inside the second piston cylinder 260, and the second piston cylinder 260 is connected to the first piston cylinder 250 through a second pipe 261, so that the non-Newtonian fluid can flow between the first piston cylinder 250 and the second piston cylinder 260.

[0050] Regarding how to alleviate the wear between the worm wheel 150 and the worm 130, specifically:

[0051] The support mechanism 200 also includes an adjusting box 240, which is connected to the first pipeline 230 and is located between the first solenoid valve 231 and the first hydraulic rod 210. A bracket 241 is fixedly connected to the rotating seat 110, and a small hydraulic rod 242 is connected to the bracket 241. The output end of the small hydraulic rod 242 is connected to a piston plate 243, and the piston plate 243 slides in the adjusting box 240; when the first solenoid valve 231 is closed, the small hydraulic rod 242 extends, so that the hydraulic oil in the adjusting box 240 flows to the first hydraulic rod 210 to make the first hydraulic rod 210 extend slightly, so that the first hydraulic rod 210 pushes the hydraulic arm 140 to swing upward slightly to reduce the meshing force between the worm gear 150 and the worm 130.

[0052] During the process of re-adjusting the angle of the hydraulic arm 140, the first solenoid valve 231 is opened. After the adjustment is completed, the first solenoid valve 231 is closed, and the adjustment box 240 is connected to the first pipeline 230, so that the hydraulic oil can flow and be temporarily stored in the adjustment box 240. When the control system detects that the first solenoid valve 231 is closed, it controls the small hydraulic rod 242 to extend a small distance, so that the piston plate 243 slides into the adjustment box 240. At this time, the hydraulic oil in the adjustment box 240 flows into the first hydraulic rod 210, so that the first hydraulic rod 210 extends a slight distance. When the first hydraulic rod 210 extends a slight distance, it can push the hydraulic arm 140 to swing up a slight angle, thereby causing the worm gear 150 to rotate a slight angle, so that the pressure between the worm gear 150 and the worm 130 is greatly reduced, so that the angle of the hydraulic arm 140 is not entirely maintained by the self-locking force of the worm gear 150 and the worm 130, thereby slowing down the wear rate of the worm gear 150 and the worm 130.

[0053] Regarding the structure of the first reduction mechanism 300, specifically:

[0054] The first reduction mechanism 300 includes a vertical frame 301 connected to the rotating seat 110, the top end of the pressure rod 252 is connected to the vertical rod 253, the diameter of the vertical rod 253 is smaller than the pressure rod 252, and a spring 254 is sleeved on the vertical rod 253, and the two ends of the spring 254 are respectively abutted against the vertical rod 253 and the vertical frame 301. When the slide plate 222 moves up quickly, the vertical rod 253 is driven to compress the spring 254 and move up to the vertical frame 301; the rotating seat 110 is connected to the mounting seat 310, and the middle part of the mounting seat 310 is connected to the second hydraulic rod 320, and the output end of the second hydraulic rod 320 is connected to the first friction block 340. When the vertical rod 253 moves up, the second hydraulic rod 320 extends so that the first friction block 340 abuts against the worm gear 150, thereby slowing down the downward swing speed of the hydraulic arm 140.

[0055] The setting of the spring 254 causes the pressure rod 252 to be pushed downward, so that when the first piston rod 251 moves up slowly, the non-Newtonian fluid in the first piston cylinder 250 can flow into the second piston cylinder 260 instead of causing the pressure rod 252 to move up. When the first piston rod 251 moves up quickly, the non-Newtonian fluid solidifies at this time, and the solidified non-Newtonian fluid transmits the force of the first piston rod 251 to the pressure rod 252. In other words, at this time, the first piston rod 251 and the solidified non-Newtonian fluid located between the first piston rod 251 and the pressure rod 252 The fluid and the pressure rod 252 move up synchronously. At this time, the elastic force of the spring 254 is not enough to stop the pressure rod 252, so that the vertical rod 253 connected to the pressure rod 252 moves up synchronously. When the vertical rod 253 moves up, the second hydraulic rod 320 is started. The second hydraulic rod 320 has two symmetrically arranged cylinder rods 330. At this time, the two cylinder rods 330 extend synchronously, and the first friction blocks 340 connected to the ends of the two cylinder rods 330 respectively abut against the two worm gears 150, so that the rotation resistance of the worm gear 150 is increased, thereby slowing down the downward swing speed of the hydraulic arm 140.

[0056] Among the optional methods of this embodiment, the more preferred ones are:

[0057] The first reduction mechanism 300 also includes a third hydraulic rod 350, which is connected to the vertical frame 301. The output end of the third hydraulic rod 350 is connected to a wedge block 360, and the top of the pressure rod 252 is connected to a truncated cone column 370, and the wedge block 360 is attached to the side of the truncated cone column 370; an elastic tube 380 is connected between the third hydraulic rod 350 and the second hydraulic rod 320. When the pressure rod 252 moves upward, the truncated cone column 370 pushes the wedge block 360 to shorten the third hydraulic rod 350, so that the hydraulic oil is transmitted to the second hydraulic rod 320 to make the first friction block 340 abut against the worm gear 150.

[0058] When the pressure rod 252 moves upward, the truncated cone 370 moves upward synchronously. At this time, the inclined surface of the truncated cone 370 pushes the wedge block 360 to slide axially to shorten the third hydraulic rod 350. At this time, the hydraulic oil in the third hydraulic rod 350 is transmitted to the second hydraulic rod 320, so that the two cylinder rods 330 of the second hydraulic rod 320 are both extended, and the elastic tube 380 is elastic. The amount of hydraulic oil transmitted from the third hydraulic rod 350 to the second hydraulic rod 320 is large, so that when the truncated cone 370 drives the third hydraulic rod 350 to shorten, the elastic tube 380 is in an expanded state. After the truncated cone 370 runs to the upper part of the wedge block 360, the contraction force of the elastic tube 380 causes part of the hydraulic oil to flow back to the third hydraulic rod 350. 0, and then at this time the wedge block 360 abuts against the side wall of the pressure rod 252, and the cone column 370 is on the upper part of the wedge block 360, blocking the downward movement of the pressure rod 252. In addition, most of the hydraulic oil enters the second hydraulic rod 320 with the contraction of the elastic tube 380 to maintain the elongated state of the cylinder rod 330. In addition, thanks to the elastic properties of the elastic tube 380, the friction between the first friction block 340 and the worm gear 150 will not be too large, so that the teeth of the worm gear 150 will not be seriously worn. It should be noted that the contact surface between the first friction block 340 and the worm gear 150 is flat and will not be stuck on the teeth of the worm gear 150, ensuring that the hydraulic arm 140 can be slowly swung down later to help the operator escape.

[0059] Regarding the structure of the second speed reduction mechanism 400, specifically:

[0060] The second reduction mechanism 400 includes a second friction block 460, which slides vertically on the upper part of the rotating seat 110. A friction rod 410 is connected to the hinge between the hydraulic arm 140 and the rotating seat 110. When the first friction block 340 abuts against the worm gear 150, the second friction block 460 moves up and abuts against the friction rod 410, so that the downward swing speed of the hydraulic arm 140 is reduced.

[0061] While the first friction block 340 abuts against the worm gear 150, the second friction block 460 moves up and abuts against the friction rod 410. The friction rod 410 is fixedly connected to the hydraulic arm 140. At this time, the rotational resistance of the friction rod 410 increases, thereby further reducing the downward swing speed of the hydraulic arm 140.

[0062] Among the optional methods of this embodiment, the more preferred ones are:

[0063] The second deceleration mechanism 400 also includes a third pipe 420 connected to the hydraulic arm 140. The third pipe 420 is provided with a second solenoid valve 430. When the second hydraulic rod 320 is extended, the second solenoid valve 430 opens, so that the hydraulic oil in the hydraulic arm 140 is discharged, so that the hydraulic arm 140 is shortened and the workbench 160 is lowered.

[0064] When the control system detects that the second hydraulic rod 320 is extended, it controls the second solenoid valve 430 to open. At this time, the hydraulic oil in the hydraulic arm 140 can leak out, so that the workbench 160 can be lowered, and the staff can quickly escape and avoid accidents.

[0065] Among the optional methods of this embodiment, the more preferred ones are:

[0066] The fourth hydraulic rod 440 is connected to the rotating seat 110 , the second friction block 460 is connected to the output end of the fourth hydraulic rod 440 , and the third pipeline 420 is in communication with the fourth hydraulic rod 440 .

[0067] The hydraulic oil leaked from the hydraulic arm 140 flows into the fourth hydraulic rod 440 through the third pipe 420 , so that the fourth hydraulic rod 440 is extended, and the extended fourth hydraulic rod 440 drives the second friction block 460 to move upward and abut against the friction rod 410 .

[0068] Among the optional methods of this embodiment, the more preferred ones are:

[0069] The fourth hydraulic rod 440 is connected to an oil drain pipe 450 , and the inner diameter of the oil drain pipe 450 is smaller than that of the third pipeline 420 .

[0070] The hydraulic oil entering the fourth hydraulic rod 440 is discharged through the oil drain pipe 450, thereby ensuring that the hydraulic oil in the hydraulic arm 140 can be continuously discharged to shorten the hydraulic arm 140. In addition, since the inner diameter of the oil drain pipe 450 is smaller than that of the third pipe 420, it can ensure that the fourth hydraulic rod 440 has sufficient elongation force to support the contact between the second friction block 460 and the friction rod 410, and the discharge speed of the hydraulic oil through the oil drain pipe 450 is reduced, so that the shortening speed of the hydraulic arm 140 will not be too fast, ensuring that there will be no safety hazards in the escape process of the staff on the workbench 160.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-speed railway contact network erection platform, comprising a platform mechanism (100), the platform mechanism (100) comprising a rotating seat (110), two groups of parallel hydraulic arms (140) are hingedly connected to the rotating seat (110), and the top ends of the two groups of hydraulic arms (140) are hingedly connected to a workbench (160), characterized in that: The supporting mechanism (200) further comprises a first hydraulic rod (210), wherein one end of the first hydraulic rod (210) is hinged to the rotating seat (110), and the other end of the first hydraulic rod (210) is hinged to one group of the hydraulic arms (140). An oil box (220) is connected to the rotating seat (110), and a first pipe (230) is connected between the first hydraulic rod (210) and the oil box (220); The resistance of the hydraulic oil flowing in the oil box (220) increases with the flow rate of the hydraulic oil; When the hydraulic arm (140) stalls and swings downward, the first hydraulic rod (210) is squeezed and contracted, so that the flow rate of the hydraulic oil increases. When the flow rate of the hydraulic oil increases, the resistance increases, so that the swing speed of the hydraulic arm (140) decreases; The support mechanism (200) further comprises a first piston cylinder (250), the first piston cylinder (250) being fixedly connected to the upper portion of the oil box (220), the first piston cylinder (250) being provided with two ports, and a first piston rod (251) and a pressure rod (252) being slidably connected in the two ports respectively, the space between the first piston rod (251) and the pressure rod (252) being filled with a non-Newtonian fluid, and a second pipe (261) being connected to the side wall of the first piston cylinder (250); A slide plate (222) is slidably connected in the oil box (220), and the bottom end of the first piston rod (251) is connected to the slide plate (222). When the first hydraulic rod (210) is quickly shortened, the hydraulic oil is quickly discharged into the oil box (220), so that the slide plate (222) rises quickly to enable the first piston rod (251) to move upward quickly, so that the non-Newtonian fluid solidifies to prevent the slide plate (222) from continuing to move upward. The platform mechanism (100) further comprises a motor (120) connected to the rotating seat (110), the output end of the motor (120) being connected to a worm (130), and both sets of the hydraulic arms (140) being connected to a worm wheel (150) meshing with the worm (130); The first pipeline (230) is provided with a first solenoid valve (231), and the first solenoid valve (231) is opened when the motor (120) is started; The support mechanism (200) further comprises an adjustment box (240), the adjustment box (240) being connected to the first pipeline (230) and being located between the first solenoid valve (231) and the first hydraulic rod (210); a bracket (241) being fixedly connected to the rotating seat (110); a small hydraulic rod (242) being connected to the bracket (241); an output end of the small hydraulic rod (242) being connected to a piston plate (243); and the piston plate (243) slidingly sliding in the adjustment box (240); When the first solenoid valve (231) is closed, the small hydraulic rod (242) is extended, so that the hydraulic oil in the adjustment box (240) flows to the first hydraulic rod (210) to cause the first hydraulic rod (210) to extend slightly, so that the first hydraulic rod (210) pushes the hydraulic arm (140) to swing upward slightly to reduce the meshing force between the worm wheel (150) and the worm (130).

2. The high-speed railway contact network erection platform according to claim 1, characterized in that: The first deceleration mechanism (300) further comprises a vertical frame (301) connected to the rotating seat (110); the top end of the pressure rod (252) is connected to a vertical rod (253); the diameter of the vertical rod (253) is smaller than that of the pressure rod (252); a spring (254) is sleeved on the vertical rod (253); two ends of the spring (254) are respectively in contact with the vertical rod (253) and the vertical frame (301); when the slide plate (222) moves up quickly, the vertical rod (253) is driven to compress the spring (254) and move up to the vertical frame (301); The rotating seat (110) is connected to a mounting seat (310), a second hydraulic rod (320) is connected to the middle of the mounting seat (310), an output end of the second hydraulic rod (320) is connected to a first friction block (340), and when the vertical rod (253) moves upward, the second hydraulic rod (320) extends so that the first friction block (340) abuts against the worm gear (150), thereby slowing down the downward swing speed of the hydraulic arm (140).

3. The high-speed railway contact network erection platform according to claim 2, characterized in that: The first speed reduction mechanism (300) further comprises a third hydraulic rod (350), the third hydraulic rod (350) being connected to the vertical frame (301), the output end of the third hydraulic rod (350) being connected to a wedge block (360), the top end of the pressure rod (252) being connected to a truncated cone column (370), and the wedge block (360) being attached to the side surface of the truncated cone column (370); An elastic tube (380) is connected between the third hydraulic rod (350) and the second hydraulic rod (320); when the pressure rod (252) moves upward, the truncated cone column (370) pushes the wedge block (360) to shorten the third hydraulic rod (350), so that the hydraulic oil is transmitted to the second hydraulic rod (320) to make the first friction block (340) abut against the worm gear (150).

4. The high-speed railway contact network erection platform according to claim 3, characterized in that: The invention also includes a second reduction mechanism (400), wherein the second reduction mechanism (400) includes a second friction block (460), wherein the second friction block (460) vertically slides on the upper part of the rotating seat (110), and a friction rod (410) is connected to the hinge between the hydraulic arm (140) and the rotating seat (110). When the first friction block (340) abuts against the worm gear (150), the second friction block (460) moves upward and abuts against the friction rod (410), so that the downward swing speed of the hydraulic arm (140) is reduced.

5. The high-speed railway contact network erection platform according to claim 4, characterized in that: The second speed reduction mechanism (400) further comprises a third pipe (420) connected to the hydraulic arm (140), and a second solenoid valve (430) is arranged on the third pipe (420). When the second hydraulic rod (320) is extended, the second solenoid valve (430) is opened, so that the hydraulic oil in the hydraulic arm (140) is discharged, so that the hydraulic arm (140) is shortened and the workbench (160) is lowered.

6. The high-speed railway contact network erection platform according to claim 5, characterized in that: A fourth hydraulic rod (440) is connected to the rotating seat (110), the second friction block (460) is connected to the output end of the fourth hydraulic rod (440), and the third pipeline (420) is in communication with the fourth hydraulic rod (440).

7. The high-speed railway contact network erection platform according to claim 6, characterized in that: The fourth hydraulic rod (440) is connected to an oil drain pipe (450), and the inner diameter of the oil drain pipe (450) is smaller than that of the third pipeline (420).

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