Auxiliary moving device for handcart of high-voltage switch cabinet

Abstract

The utility model discloses an auxiliary moving device for a handcart of a high-voltage switch cabinet, and the device comprises a pedal which is provided with a height-adjustable supporting leg at one side, and is connected with a handcart chamber in an overturning manner through a limiting overturning member; the base is fixed on the pedal, and a pair of guide rails are oppositely arranged; the pair of retaining shoulders are respectively propped against the side walls of the pair of guide rails; the vertical parts of the baffles are fixed to the side wall of the base, and the side walls of the transverse parts of the baffles abut against the opposite side walls of the pair of guide rails respectively; each pressing plate comprises an upper transverse part, a lower transverse part and a vertical part connected with the upper transverse part and the lower transverse part, the upper transverse parts are fixed to the tops of the guide rails, the lower transverse parts are fixed to the transverse parts of the baffles, and the vertical parts of the pressing plates abut against the side walls of the outer sides of the guide rails. According to the utility model, the pedal and the handcart chamber are integrated, so that the workload of carrying the pedal by a maintainer is reduced, the installation precision and stability of the guide rail can be improved, and the handcart is suitable for load movement of more than 500kg.

Description

Technical Field

[0001] The utility model relates to the field of electric power distribution equipment, and more specifically, to a high-voltage switch cabinet trolley auxiliary moving device. Background Art

[0002] High-voltage switchgear is a crucial component of power distribution rooms. Its primary function is to distribute power to equipment and loads, as well as to control and protect the normal operation of the system. High-voltage switchgear is also the equipment most frequently operated during daily substation maintenance and inspection. High-voltage switchgear is equipped with a movable trolley, which carries electrical equipment such as the circuit breaker's moving contacts. During maintenance and switching operations on the high-voltage switchgear, the trolley must be pulled out of the cabinet to inspect the equipment. However, the trolley weighs several hundred kilograms. For example, a 35kV trolley switch weighs approximately 500 kilograms, and a 10kV trolley switch weighs approximately 200 kilograms, and its center of gravity is relatively high. While the chassis of traditional trolleys has rollers and internal mechanisms for operating and controlling the chassis's movement, the interior of the trolley compartment only features simple grooved rails to guide the rollers, which are much wider than the rollers. And when the entire trolley is completely pulled out of the trolley room, because the ground and the bottom of the trolley room are not in the same plane, the entire trolley stays on the pedal in an inclined state (before moving the trolley, it is necessary to open the trolley room door and put on the pedal. One end of the pedal is connected to the trolley room and the other end is directly connected to the ground to form an inclined surface). The pedal is sometimes also provided with a grooved rail, which is connected to the grooved rail in the trolley room, which has a certain guiding effect on the trolley. However, the existing trolley auxiliary moving device, that is, the grooved rails in the trolley room and on the pedal, are insufficient in guiding and supporting performance, and there is a risk of tipping. Therefore, it is necessary to improve the trolley auxiliary moving device to improve the stability of the mobile support and reduce the risk of tipping. Utility Model Content

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages to be described below.

[0004] In order to achieve these purposes and other advantages according to the utility model, a high-voltage switch cabinet trolley auxiliary moving device is provided, comprising:

[0005] A pedal, wherein the side away from the trolley chamber is provided with at least one pair of height-adjustable legs, and the side close to the trolley chamber is connected to the bottom surface of the trolley chamber by at least one pair of position-limiting flip members; wherein when the position-limiting flip members are tightened, the pedal is perpendicular to the bottom surface of the trolley chamber, and when the position-limiting flip members are unfolded, the pedal is parallel to the bottom surface of the trolley chamber;

[0006] An indoor guide rail assembly and an outdoor guide rail assembly are respectively arranged on the bottom surface of the trolley chamber and the inner surface of the pedal. The outdoor guide rail assembly has the same structure as the indoor guide rail assembly. When the limit flip member is unfolded, the guide rail of the outdoor guide rail assembly docks with the guide rail of the indoor guide rail assembly. The two pairs of running rollers of the trolley are limited and rolled in the guide rails of the indoor guide rail assembly or the outdoor guide rail assembly. The guide rail is located at the end of the pedal away from the trolley chamber and is provided with an end stop.

[0007] The outdoor guide rail assembly includes:

[0008] A base is fixed on the pedal, the guide rails are a pair and are relatively located on the base, the vertical cross-section of the guide rails is similar to a "]" shape, and the pair of guide rails are relatively arranged;

[0009] A pair of shoulders, the pair of shoulders are spaced apart and arranged on the base, and the side walls of the pair of shoulders, which are separated from each other, respectively abut against the side walls of the lower portions of the pair of guide rails;

[0010] A pair of baffles, the pair of baffles are oppositely arranged on both sides of the base, the baffles are L-shaped, the vertical portions of the baffles are fixed to the side walls of the base, the transverse portions of the baffles are fixed to the top surface of the base, and the side walls of the transverse portions of the pair of baffles respectively abut against the side walls of the pair of guide rails;

[0011] A pair of pressure plates, each of which is Z-shaped and includes an upper transverse portion, a lower transverse portion, and a vertical portion connecting the upper transverse portion and the lower transverse portion. The upper transverse portion is fixed to the top of the guide rail, the lower transverse portion is fixed to the transverse portion of the baffle, and the vertical portion of the pressure plate abuts against the side wall on the outside of the guide rail.

[0012] Preferably, the support leg includes a threaded barrel fixed on the pedal, a threaded rod threadedly connected to the threaded barrel, and a cylindrical support foot fixed to the bottom of the threaded rod, the diameter of the support foot is larger than the diameter of the threaded barrel, and the thread of the threaded barrel is an internal thread.

[0013] Preferably, the position-limiting flip member includes:

[0014] a first ear seat and a second ear seat, wherein the first ear seat and the second ear seat are respectively fixed to the bottom surface of the trolley chamber and the inner surface of the pedal, and a first pin shaft and a second pin shaft are provided on the first ear seat at intervals along the extension direction of the guide rail, and a third pin shaft and a fourth pin shaft are provided on the second ear seat at intervals;

[0015] A first curved rod is shaped like a "〉" and has pin holes at both ends of the first curved rod and at a bend near the first curved rod. The pin hole at one end of the first curved rod is rotatably sleeved on the first pin shaft.

[0016] A first straight rod, with pin holes at both ends, wherein the pin hole at one end of the first straight rod is rotatably sleeved on the second pin shaft;

[0017] The second curved rod is L-shaped, with pin holes provided at both ends of the second curved rod and near the bend of the second curved rod. The pin hole at one end of the second curved rod is rotatably sleeved on the third pin shaft. The pin hole at the bend of the second curved rod is coaxially arranged with the pin hole at the other end of the first straight rod and is rotatably sleeved on a seventh pin shaft. Two pin holes are provided at the other end of the second curved rod at intervals. The pin hole at the other end of the second curved rod near the bend is coaxially arranged with the pin hole at the bend of the first curved rod and is rotatably sleeved on an eighth pin shaft.

[0018] A second straight rod, having pin holes at both ends thereof, the pin hole at one end of the second straight rod being rotatably sleeved on the fourth pin shaft, and the pin hole at the other end of the second straight rod being coaxially arranged with the pin hole at the other end of the first curved rod and rotatably sleeved on a fifth pin shaft;

[0019] A pair of pull rods, wherein an annular limiting protrusion is convexly provided on the side wall of the pull rods, a limiting sleeve is provided with a tensioning spring between the limiting protrusions of the pair of pull rods, and pin holes are provided on the ends of the pair of pull rods that are away from each other, the pin hole on one of the pull rods is rotatably sleeved on the fifth pin shaft, and the pin hole on the other pull rod is coaxially arranged with the remaining pin hole of the second curved link and rotatably sleeved on a sixth pin shaft;

[0020] When the first crank arm rotates outwardly around the first pin axis to a limit, the top surface of the pedal is flush with the top surface of the trolley chamber, and the guide rail of the outdoor guide rail assembly is docked with the guide rail of the indoor guide rail assembly;

[0021] When the first crank arm rotates inwardly to a limit around the first pin axis, the pedal is perpendicular to the top surface of the trolley chamber.

[0022] Preferably, the side of the pedal close to the cart chamber is located in a gap above the bottom surface of the cart chamber, and a pair of pads are provided on the side of the bottom surface of the cart chamber close to the pedal, wherein when the pedal is parallel to the bottom surface of the cart chamber, the bottom surface of the pedal abuts against the pads.

[0023] Preferably, at least one pair of anti-slip components is provided on the base, each pair of anti-slip components is located on the inner side of a pair of shoulder blocks, and the anti-slip components include:

[0024] A mounting cavity, which is opened on the base;

[0025] A bottom plate is fixed to the bottom of the installation cavity, a third ear seat is provided on the bottom plate, and a ninth pin shaft is provided on the third ear seat;

[0026] A connecting rod, wherein the upper and lower ends thereof are provided with pin holes, and the pin hole at the lower end of the connecting rod is rotatably sleeved on the ninth pin shaft;

[0027] A support cover, the bottom of which is open, and the support cover is arranged on the bottom plate;

[0028] A large slider, whose two side walls and the two inner walls of the support cover are slidably arranged up and down, and the large slider is provided with an annular limiting slideway facing the side wall of the connecting rod, and a small slider is slidably arranged in the limiting slideway, and the small slider is provided with an axially horizontal tenth pin shaft, and the tenth pin shaft is rotatably sleeved with a pin hole at the upper end of the connecting rod;

[0029] The limiting slide includes a first arc-shaped locking portion located at the lowest point, a first guide portion bent upward and connected to the first arc-shaped portion, a second guide portion connected to the first guide portion and obliquely downward, a second arc-shaped portion connected to the second guide portion, a third guide portion connected to the second arc-shaped locking portion and obliquely upward, and a fourth guide portion bent downward from the third guide portion, wherein the fourth guide portion is connected to the first arc-shaped locking portion;

[0030] A lifting rod is slidably mounted on the support cover, the lower end of the lifting rod is fixed to the top of the large slider, and a stop slider is fixed to the upper end of the lifting rod;

[0031] A pair of limit rods, the pair of limit rods are fixed at intervals to the bottom of the large slider and the bottom of the base plate, and the limit springs are coaxially sleeved on the pair of limit rods;

[0032] When the small slider is limited to the first arc-shaped locking portion, the limit spring is in a stretched state, and the top of the stop slider is higher than the top surface of the base and higher than the bottom surface of the chassis of the trolley;

[0033] When the small sliding block is located at the second arc-shaped locking portion, the limit spring is in a compressed state, and the top of the stop sliding block is lower than the top surface of the base.

[0034] Preferably, the anti-slip block is in the shape of a cuboid.

[0035] The utility model has at least the following beneficial effects:

[0036] First, by integrating the pedal into the trolley compartment, the workload of maintenance personnel who carry the pedal can be reduced. The limited flip-over component allows the pedal to be deployed when needed and retracted after maintenance is complete, without affecting the closing and locking of the trolley compartment door. By configuring the guide rail shape and providing the base, shoulder, baffle, and pressure plate, the guide rail is precisely positioned and stably installed, improving installation accuracy and stability. When the load exceeds 500kg, the guide rail can still maintain its accuracy, ensuring smoother rolling of the rollers. The limited flip-over component also minimizes the gap between the indoor and outdoor guide rails to improve rolling smoothness.

[0037] Second, by means of the linkage of the pull rod, the tension spring, the second curved rod and the first straight rod, the tension limit of the flipping operation of the first curved rod and the second straight rod is realized, so that the pedal can remain in a vertical state when it is in the vertical position, avoiding the pedal suddenly tilting outwards to endanger the maintenance personnel when the trolley room door is opened.

[0038] Third, when performing maintenance operations, the trolley is pulled out and stays on the guide rail on the pedal. At this time, the anti-sliding block can be pressed to compress the limit spring that was originally in a compressed state again, and the upper end of the connecting rod (small slider) moves upward relative to the second arc-shaped positioning portion, and tilts toward the fourth guide portion under the guidance of the third guide portion. Then, after releasing the pressure on the anti-sliding block, the limit spring will restore its deformation, thereby pushing the large slider to move upward, and the upper end of the connecting rod (small slider) enters the first arc-shaped positioning portion along the fourth guide portion. At this time, the limit spring is in a stretched state, and the anti-sliding block extends out of the mounting cavity to resist the chassis vehicle, thereby reducing accidental displacement of the trolley.

[0039] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A top view of the trolley auxiliary moving device according to one of the technical solutions of the present utility model;

[0041] Figure 2 This is a side structural diagram of the outdoor guide rail assembly according to one of the technical solutions of the present utility model;

[0042] Figure 3 This is a detailed diagram of the installation of the guide rail according to one of the technical solutions of the present invention;

[0043] Figure 4 This is a side view of the position-limiting flip member when it is tightened according to one of the technical solutions of the present invention;

[0044] Figure 5It is the side surface state schematic view when the limiting turnover piece of one of the technical schemes of the utility model is unfolded.

[0045] Figure 6 It is the detail view of the pull rod of one of the technical schemes of the utility model.

[0046] Figure 7 It is the side surface structure schematic view when the anti-skid assembly of one of the technical schemes of the utility model is in the blocking state.

[0047] Figure 8 It is the side surface structure schematic view when the anti-skid assembly of one of the technical schemes of the utility model is in the retracted state.

[0048] Figure 9 It is the detail view of the limiting slide of one of the technical schemes of the utility model.

[0049] The description of the drawings of the utility model: pedal 100, supporting leg 101, limiting turnover piece 200, handcart room bottom surface 300, indoor guide rail assembly 400, outdoor guide rail assembly 500, base 51, guide rail 52, stop shoulder 53, baffle 54, pressing plate 55, first ear seat 1, second ear seat 2, first pin shaft 3, second pin shaft 4, third pin shaft 5, fourth pin shaft 6, first curved rod 7, first straight rod 8, second curved rod 9, seventh pin shaft 10, eighth pin shaft 11, second straight rod 12, fifth pin shaft 13, pull rod 14, limiting protrusion 15, tension spring 16, sixth pin shaft 17, cushion block 102, anti-skid assembly 600, bottom plate 61, ninth pin shaft 62, connecting rod 63, support cover 64, large sliding block 65, limiting slide 66, tenth pin shaft 67, first arc-shaped clamping portion 18, first guide portion 19, second guide portion 20, second arc-shaped clamping portion 21, third guide portion 22, fourth guide portion 23, seat plate 103, lifting rod 68, limiting rod 69, limiting spring 70, anti-skid block 71, chassis trolley 700, handcart 800, roller 701. DETAILED DESCRIPTION

[0050] The utility model will be further explained in detail in combination with the drawings, so that the person skilled in the art can implement according to the description of the specification.

[0051] It should be noted that the experimental methods in the following implementation are conventional methods, and the reagents and materials can be obtained from commercial channels unless otherwise specified; in the description of the utility model, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, configuration and operation, so it cannot be understood as a limitation on the utility model.

[0052] like Figures 1 to 9 As shown, the utility model provides a high-voltage switch cabinet trolley auxiliary moving device, comprising:

[0053] The pedal 100 is provided with at least one pair of height-adjustable legs 101 on the side away from the cart chamber, and is flipped and connected to the bottom surface 300 of the cart chamber through at least one pair of limiting flip parts 200 on the side close to the cart chamber; wherein, when the limiting flip parts 200 are tightened, the pedal 100 is perpendicular to the bottom surface 300 of the cart chamber, and when the limiting flip parts 200 are unfolded, the pedal 100 is parallel to the bottom surface 300 of the cart chamber; when maintenance is required, the cart chamber door is opened, the pedal 100 is flipped outward, and the height of the legs 101 is adjusted to make the pedal 100 flush with the bottom surface 300 of the cart chamber, so that the cart 800 is also in an upright state when supported on the pedal 100, avoiding tilting and reducing the chance of tipping.

[0054] The indoor guide rail assembly 400 and the outdoor guide rail assembly 500 are respectively arranged on the bottom surface 300 of the trolley chamber and the inner surface of the pedal 100. The outdoor guide rail assembly 500 has the same structure as the indoor guide rail assembly 400. When the limiting flip member 200 is unfolded, the guide rail 52 of the outdoor guide rail assembly 500 is docked with the guide rail of the indoor guide rail assembly 400, and the two pairs of walking rollers 701 of the trolley 800 are limited and rolled in the guide rails on the indoor guide rail assembly 400 or the outdoor guide rail assembly 500. When the pedal 100 is flush with the bottom surface 300 of the trolley chamber, the guide rails on the indoor guide rail assembly 400 and the outdoor guide rail assembly 500 are also precisely docked, so that the maintenance personnel can smoothly transition from indoor to outdoor when pulling out the trolley 800 and stay on the outdoor guide rail assembly 500. The guide rail is provided with an end stopper at one end of the pedal 100 away from the trolley chamber, and the end stopper can prevent the trolley 800 from sliding off the pedal 100 from the guide rail.

[0055] The outdoor guide rail assembly 500 includes:

[0056] The base 51 is fixed on the pedal 100, and the guide rails 52 are a pair and are relatively located on the base 51. The vertical cross-section of the guide rails 52 is in a "]" shape, and the pair of guide rails 52 are relatively arranged; the inner concave shape of the guide rails 52 is used to limit the roller 701 on the chassis 700 of the trolley 800, so that it can roll, and the upper and lower limit settings can prevent the roller 701 from jumping out of the guide rail 52, thereby improving stability.

[0057] A pair of shoulders 53 are arranged at intervals on the base 51, and the opposite side walls of the pair of shoulders 53 respectively abut against the lower side walls of the pair of guide rails 52. The setting of the shoulders 53 is used to locate the installation position of the guide rails 52, improve the installation accuracy of the guide rails 52, and then improve the docking accuracy of the indoor and outdoor guide rails 52, so that the process of pulling the trolley 800 from indoors to outdoors is smoother and there is no jamming.

[0058] A pair of baffles 54 are arranged on both sides of the base 51, and the baffles 54 are L-shaped. The vertical part of the baffle 54 is fixed on the side wall of the base 51, and the horizontal part of the baffle 54 is fixed on the top surface of the base 51. The side walls of the horizontal parts of the pair of baffles 54 are respectively abutted against the opposite side walls of a pair of guide rails 52; the baffles 54 are set to limit and fix the guide rails 52 to prevent the guide rails 52 from being displaced during the movement of the trolley 800, thereby preventing jamming.

[0059] A pair of pressure plates 55 are provided in a Z-like shape, comprising an upper transverse portion, a lower transverse portion, and a vertical portion connecting the upper and lower transverse portions. The upper transverse portion is fixed to the top of the guide rail 52, and the lower transverse portion is fixed to the transverse portion of the baffle 54. The vertical portion of the pressure plates 55 abuts against the outer sidewalls of the guide rail 52. The provision of the pressure plates 55 vertically reinforces the positional fixation of the guide rail 52, reduces vertical displacement of the guide rail 52, and keeps the guide rails 52 on the same horizontal plane.

[0060] In the above technical solution, by integrating the pedal 100 into the trolley room, the workload of maintenance personnel carrying the pedal 100 can be reduced. By setting the limiting flip member 200, the pedal 100 can be unfolded when needed and folded after maintenance is completed, without affecting the closing and locking of the trolley room door. By setting the shape of the guide rail 52 and setting the base 51, shoulder 53, baffle 54, and pressure plate 55, the guide rail 52 is accurately positioned and stably installed, thereby improving the installation accuracy and stability of the guide rail 52. When the load weight reaches more than 500kg, the guide rail 52 can still maintain its accuracy, allowing the roller 701 to roll more smoothly. The limiting flip member 200 can also minimize the joint gap between the indoor and outdoor guide rails 52 to improve rolling smoothness.

[0061] In another technical solution, the support leg 101 comprises a threaded barrel fixed to the pedal 100, a threaded rod threadedly connected to the barrel, and a cylindrical foot fixed to the bottom of the threaded rod. The diameter of the foot is larger than that of the barrel, and the threads of the barrel are internal. By rotating the threaded rod, the overall length of the threaded rod and barrel assembly can be adjusted, thereby achieving the purpose of adjusting the height of the support leg 101. This adjustment method is quick and convenient.

[0062] In another technical solution, the limiting turnover part 200 comprises:

[0063] The first and second ear seats 1 and 2 are respectively fixed on the bottom surface 300 of the handcart chamber and the inner side surface of the pedal 100, the first pin shaft 3 and the second pin shaft 4 are arranged on the first ear seat 1 in the extension direction of the guide rail, and the third pin shaft 5 and the fourth pin shaft 6 are arranged on the second ear seat 2. Specifically, the first ear seat 1 can also be fixed by being lifted to a certain height through the seat plate 103, and the seat plate 103 is fixed on the bottom surface 300 of the handcart chamber.

[0064] The first curved rod 7 is in the shape of a “>”, both ends and the bending part close to the first curved rod 7 are provided with pin holes, and the pin hole at one end of the first curved rod 7 is rotatably sleeved on the first pin shaft 3.

[0065] The first straight rod 8 is provided with pin holes at both ends, and the pin hole at one end of the first straight rod 8 is rotatably sleeved on the second pin shaft 4.

[0066] When the first curved rod 7 rotates outward to the limit around the first pin shaft 3, the top surface of the pedal 100 is flush with the top surface of the handcart chamber, and the guide rail of the outdoor guide rail assembly 500 is connected with the guide rail of the indoor guide rail assembly 400.

[0067] When the first curved rod 7 rotates inward to the limit around the first pin shaft 3, the pedal 100 is perpendicular to the top surface of the handcart chamber.

[0068] The first curved rod 7 can rotate in the vertical plane around the first pin shaft 3, the first curved rod 7 can push the second straight rod 12 to rotate, and the second straight rod 12 can rotate around the fourth pin shaft 6, the combination of the first pin shaft 3, the first curved rod 7, the fifth pin shaft 13, the second straight rod 12 and the fourth pin shaft 6 can push the pedal 100 to overturn, according to the actual thickness of the pedal 100, the relative position of the first ear seat 1 and the second ear seat 2, and the designed gap when the pedal 100 is aligned with the seat plate 103, the length of the second straight rod 12 and the length and bending angle of the first curved rod 7 are set.

[0069] In order to ensure that the pedal 100 remains in a vertical position and does not fall when it is perpendicular to the surface of the trolley chamber, the position-limiting flip member 200 further includes a second curved rod 9, which is L-shaped. Pin holes are provided at both ends of the second curved rod 9 and near the bend of the second curved rod 9. The pin hole at one end of the second curved rod 9 is rotatably sleeved on the third pin shaft 5. The pin hole at the bend of the second curved rod 9 is coaxially arranged with the pin hole at the other end of the first straight rod 8 and is rotatably sleeved on a seventh pin shaft 10. Two pin holes are provided at the other end of the second curved rod 9 at intervals. The pin hole at the other end of the second curved rod 9 and near the bend is coaxially arranged with the pin hole at the bend of the first curved rod 7 and is rotatably sleeved on an eighth pin shaft 11.

[0070] A second straight rod 12 is provided with pin holes at both ends. The pin hole at one end of the second straight rod 12 is rotatably sleeved on the fourth pin shaft 6, and the pin hole at the other end is coaxially arranged with the pin hole at the other end of the first curved rod 7 and rotatably sleeved on a fifth pin shaft 13.

[0071] A pair of pull rods 14, each having an annular limiting protrusion 15 convexly provided on its side wall, a tensioning spring 16 being provided between the limiting protrusions 15 of the pair of pull rods 14, and pin holes being provided on opposite ends of the pair of pull rods 14, wherein the pin hole on one of the pull rods 14 is rotatably sleeved on the fifth pin shaft 13, and the pin hole on the other pull rod 14 is coaxially arranged with the remaining pin hole of the second curved link 9 and rotatably sleeved on a sixth pin shaft 17;

[0072] In the above technical solution, as the fifth pin 13 moves with the second straight rod 12, it drives the pull rod 14 to move, thereby driving the second curved rod 9 to move. To further stabilize the movement of the second curved rod 9, the second curved rod 9 is also rotationally connected to the first curved rod 7, which in turn tightens the second curved rod 9. The second curved rod 9, in conjunction with the first straight rod 8, drives the first straight rod 8 to rotate about the second pin 4. The linkage of the pull rod 14, the tensioning spring 16, the second curved rod 9, and the first straight rod 8 achieves a tension limit for the flipping operation of the first curved rod 7 and the second straight rod 12, thereby maintaining the vertical position of the pedal 100 when in the vertical position, preventing the pedal 100 from suddenly tipping outward and endangering maintenance personnel when the handcart door is opened. The lengths and angles of the pull rod 14, the tensioning spring 16, the second curved rod 9, and the first straight rod 8 are designed according to specific circumstances.

[0073] In another technical solution, the side of the pedal 100 close to the cart chamber is located in a gap above the cart chamber bottom 300. A pair of pads 102 are provided on the side of the cart chamber bottom 300 close to the pedal 100. When the pedal 100 is parallel to the cart chamber bottom 300, the bottom surface of the pedal 100 abuts against the pads 102. The pads 102 support the pedal 100 and improve its ability to maintain flushness with the cart chamber bottom 300.

[0074] In another technical solution, at least one pair of anti-slip components 600 is provided on the base 51, and each pair of anti-slip components 600 is located on the inner side of a pair of shoulder blocks 53. The anti-slip components 600 include:

[0075] A mounting cavity, which is opened on the base 51;

[0076] A bottom plate 61 is fixed to the bottom of the installation cavity, a third ear seat is provided on the bottom plate 61, and an axially horizontal ninth pin 62 is provided on the third ear seat;

[0077] The connecting rod 63 has pin holes at its upper and lower ends, and the pin hole at the lower end of the connecting rod 63 is rotatably sleeved on the ninth pin shaft 62;

[0078] The support cover 64 has an open bottom and is disposed on the base plate 61 . The support cover 64 provides a movable space for the connecting rod 63 , and the side walls of the support cover 64 limit the side walls of the connecting rod 63 , thereby allowing the connecting rod 63 to remain movable on a vertical plane.

[0079] The large slider 65 has two side walls that slide up and down with the two inner walls of the support cover 64. The large slider 65 is provided with an annular limiting slide 66 on the side wall facing the connecting rod 63. A small slider is provided in the limiting slide 66 for sliding. The small slider is provided with an axially horizontal tenth pin shaft 67, and the tenth pin shaft 67 is rotatably sleeved on the pin hole at the upper end of the connecting rod 63; the large slider 65 can slide up and down along the side wall of the support cover 64, and the small slider can slide in the limiting slide 66.

[0080] The limiting slide 66 includes a first arc-shaped locking portion 18 located at the lowest position, a first guide portion 19 bent upward and connected to the first arc-shaped portion, a second guide portion 20 connected to the first guide portion 19 and obliquely downward, a second arc-shaped locking portion 21 connected to the second guide portion 20, a third guide portion 22 connected to the second arc-shaped locking portion 21 and obliquely upward, and a fourth guide portion 23 bent downward from the third guide portion 22, wherein the fourth guide portion 23 is connected to the first arc-shaped locking portion 18;

[0081] The lifting rod 68 is slidably mounted on the support cover 64 , and the lower end of the lifting rod 68 is fixed to the top of the large slider 65 . A stop slider 71 is fixed to the upper end of the lifting rod 68 . The stop slider 71 slides up and down synchronously with the lifting rod 68 and the large slider 65 .

[0082] A pair of limit rods 69 are fixed at relative intervals on the bottom of the large slider 65 and the bottom of the base plate 61, and a limit spring 70 is coaxially sleeved on the pair of limit rods 69; the limit spring 70 is used to tighten or press the connecting rod 63 so that the connecting rod 63 remains in a specific position (the first arc-shaped locking portion 18 and the second arc-shaped locking portion 21).

[0083] When the small slider is limited to the first arc-shaped locking portion 18, the limit spring 70 is in a stretched state, and the top of the stop slider 71 is higher than the top surface of the base 51 and higher than the bottom surface of the chassis 700 of the trolley 800;

[0084] When the small sliding block is located at the second arc-shaped locking portion 21 , the limit spring 70 is in a compressed state, and the top of the stop sliding block 71 is lower than the top surface of the base 51 .

[0085] In the above technical solution, when performing maintenance operations, the trolley 800 is pulled out and stays on the guide rail on the pedal 100. At this time, the stop slider 71 can be pressed to compress the limit spring 70 which was originally in a compressed state again, and the upper end of the connecting rod 63 (small slider) moves upward relative to the second arc-shaped locking portion 21, and tilts toward the fourth guide portion 23 under the guidance of the third guide portion 22. Then, after the pressure on the stop slider 71 is released, the limit spring 70 will restore its deformation, thereby pushing the large slider 65 to move upward, and the upper end of the connecting rod 63 (small slider) enters the first arc-shaped locking portion 18 along the fourth guide portion 23. At this time, the limit spring 70 is in a stretched state, and the stop slider 71 extends out of the mounting cavity to resist the chassis 700, thereby reducing the accidental displacement of the trolley 800.

[0086] After the inspection is completed, the stop block 71 is pressed again, and the upper end of the connecting rod 63 (small slider) is disengaged from the first arc-shaped locking portion 18. Then, the pressure on the stop block 71 is released, and the upper end of the connecting rod 63 (small slider) passes through the first guide portion 19 and the second guide portion 20 and is engaged with the second arc-shaped locking portion 21, completing the retraction of the stop block 71, thereby releasing the stop block 71 from resisting the chassis 700, and the handcart 800 can be smoothly pushed into the room. Specifically, the stop block 71 is in the shape of a rectangular parallelepiped. Since the side wall of the chassis 700 is flat, the rectangular parallelepiped shape can increase the contact area with the chassis 700, thereby improving the resistance performance.

[0087] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. Auxiliary moving device for high-voltage switch cabinet trolley, characterized in that: include: A pedal, wherein the side away from the trolley chamber is provided with at least one pair of height-adjustable legs, and the side close to the trolley chamber is connected to the bottom surface of the trolley chamber by at least one pair of position-limiting flip members; wherein when the position-limiting flip members are tightened, the pedal is perpendicular to the bottom surface of the trolley chamber, and when the position-limiting flip members are unfolded, the pedal is parallel to the bottom surface of the trolley chamber; An indoor guide rail assembly and an outdoor guide rail assembly are respectively arranged on the bottom surface of the trolley chamber and the inner surface of the pedal. The outdoor guide rail assembly has the same structure as the indoor guide rail assembly. When the limit flip member is unfolded, the guide rail of the outdoor guide rail assembly docks with the guide rail of the indoor guide rail assembly. The two pairs of running rollers of the trolley are limited and rolled in the guide rails of the indoor guide rail assembly or the outdoor guide rail assembly. The guide rail is located at the end of the pedal away from the trolley chamber and is provided with an end stop. The outdoor guide rail assembly includes: A base fixed on the pedal, wherein the guide rails are a pair and are relatively located on the base, wherein the vertical cross-section of the guide rails is similar to a "]" shape, and the pair of guide rails are relatively arranged; A pair of shoulders, the pair of shoulders are spaced apart and arranged on the base, and the side walls of the pair of shoulders, which are separated from each other, respectively abut against the side walls of the lower portions of the pair of guide rails; A pair of baffles, the pair of baffles are oppositely arranged on both sides of the base, the baffles are L-shaped, the vertical portions of the baffles are fixed to the side walls of the base, the transverse portions of the baffles are fixed to the top surface of the base, and the side walls of the transverse portions of the pair of baffles respectively abut against the side walls of the pair of guide rails; A pair of pressure plates, each of which is Z-shaped and includes an upper transverse portion, a lower transverse portion, and a vertical portion connecting the upper transverse portion and the lower transverse portion. The upper transverse portion is fixed to the top of the guide rail, the lower transverse portion is fixed to the transverse portion of the baffle, and the vertical portion of the pressure plate abuts against the side wall on the outside of the guide rail.

2. The high-voltage switchgear trolley auxiliary moving device according to claim 1, characterized in that: The support leg includes a threaded barrel fixed on the pedal, a threaded rod threadedly connected to the threaded barrel, and a cylindrical support foot fixed to the bottom of the threaded rod. The diameter of the support foot is larger than the diameter of the threaded barrel, and the thread of the threaded barrel is an internal thread.

3. The high-voltage switch cabinet trolley auxiliary moving device according to claim 1, characterized in that: The limiting flip member includes: a first ear seat and a second ear seat, wherein the first ear seat and the second ear seat are respectively fixed to the bottom surface of the trolley chamber and the inner surface of the pedal, and a first pin shaft and a second pin shaft are provided on the first ear seat at intervals along the extension direction of the guide rail, and a third pin shaft and a fourth pin shaft are provided on the second ear seat at intervals; A first curved rod is shaped like a "〉" and has pin holes at both ends of the first curved rod and at a bend near the first curved rod. The pin hole at one end of the first curved rod is rotatably sleeved on the first pin shaft. A first straight rod, with pin holes at both ends, wherein the pin hole at one end of the first straight rod is rotatably sleeved on the second pin shaft; The second curved rod is L-shaped, with pin holes provided at both ends of the second curved rod and near the bend of the second curved rod. The pin hole at one end of the second curved rod is rotatably sleeved on the third pin shaft. The pin hole at the bend of the second curved rod is coaxially arranged with the pin hole at the other end of the first straight rod and is rotatably sleeved on a seventh pin shaft. Two pin holes are provided at the other end of the second curved rod at intervals. The pin hole at the other end of the second curved rod near the bend is coaxially arranged with the pin hole at the bend of the first curved rod and is rotatably sleeved on an eighth pin shaft. A second straight rod, having pin holes at both ends thereof, the pin hole at one end of the second straight rod being rotatably sleeved on the fourth pin shaft, and the pin hole at the other end of the second straight rod being coaxially arranged with the pin hole at the other end of the first curved rod and rotatably sleeved on a fifth pin shaft; A pair of pull rods, wherein an annular limiting protrusion is convexly provided on the side wall of the pull rods, a limiting sleeve is provided with a tensioning spring between the limiting protrusions of the pair of pull rods, and pin holes are provided on the ends of the pair of pull rods that are away from each other, the pin hole on one of the pull rods is rotatably sleeved on the fifth pin shaft, and the pin hole on the other pull rod is coaxially arranged with the remaining pin hole of the second curved link and rotatably sleeved on a sixth pin shaft; When the first crank arm rotates outwardly around the first pin axis to a limit, the top surface of the pedal is flush with the top surface of the trolley chamber, and the guide rail of the outdoor guide rail assembly is docked with the guide rail of the indoor guide rail assembly; When the first crank arm rotates inwardly to a limit around the first pin axis, the pedal is perpendicular to the top surface of the trolley chamber.

4. The high-voltage switchgear trolley auxiliary moving device according to claim 3, characterized in that: The side of the pedal close to the trolley chamber is located in a gap above the bottom surface of the trolley chamber, and a pair of pads are provided on the side of the bottom surface of the trolley chamber close to the pedal, wherein when the pedal is parallel to the bottom surface of the trolley chamber, the bottom surface of the pedal abuts against the pads.

5. The high-voltage switch cabinet trolley auxiliary moving device according to claim 1, characterized in that: At least one pair of anti-slip components is provided on the base, each pair of anti-slip components is located on the inner side of a pair of shoulder blocks, and the anti-slip components include: A mounting cavity, which is opened on the base; A bottom plate fixed to the bottom of the mounting cavity, wherein a third ear seat is provided on the bottom plate, and an axially horizontal ninth pin is provided on the third ear seat; A connecting rod, wherein the upper and lower ends thereof are provided with pin holes, and the pin hole at the lower end of the connecting rod is rotatably sleeved on the ninth pin shaft; A support cover, the bottom of which is open, and the support cover is arranged on the bottom plate; A large slider, whose two side walls and the two inner walls of the support cover are slidably arranged up and down, and the large slider is provided with an annular limiting slideway facing the side wall of the connecting rod, and a small slider is slidably arranged in the limiting slideway, and the small slider is provided with an axially horizontal tenth pin shaft, and the tenth pin shaft is rotatably sleeved with a pin hole at the upper end of the connecting rod; The limiting slide includes a first arc-shaped clamping portion located at the lowest point, a first guide portion bent upward and connected to the first arc-shaped clamping portion, a second guide portion connected to the first guide portion and obliquely downward, a second arc-shaped clamping portion connected to the second guide portion, a third guide portion connected to the second arc-shaped clamping portion and obliquely upward, and a fourth guide portion bent downward from the third guide portion, wherein the fourth guide portion is connected to the first arc-shaped clamping portion; A lifting rod is slidably mounted on the support cover, the lower end of the lifting rod is fixed to the top of the large slider, and a stop slider is fixed to the upper end of the lifting rod; A pair of limit rods, the pair of limit rods are fixed at intervals to the bottom of the large slider and the bottom of the base plate, and the limit springs are coaxially sleeved on the pair of limit rods; When the small slider is limited to the first arc-shaped locking portion, the limit spring is in a stretched state, and the top of the stop slider is higher than the top surface of the base and higher than the bottom surface of the chassis of the trolley; When the small sliding block is located at the second arc-shaped locking portion, the limit spring is in a compressed state, and the top of the stop sliding block is lower than the top surface of the base.

6. The high-voltage switchgear trolley auxiliary moving device according to claim 5, characterized in that: The anti-sliding block is in a rectangular parallelepiped shape.

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