Platform device with gradient adjusting function

Abstract

The utility model belongs to the technical field of tunnel simulation, and particularly relates to a platform device with a gradient adjusting function, one end of a platform is hinged on a fixing frame, two first supporting mechanisms are arranged in the middle of the platform, and two second supporting mechanisms are arranged at the other end of the platform. The platform is supported through the first supporting mechanism and the second supporting mechanism, when the angle between the platform and the ground needs to be adjusted to be large, the power mechanism drives the limiting mechanism in the second supporting mechanism to move, then the mounting box is driven to ascend, the end, away from the fixing frame, of the platform is driven to be lifted, and the angle between the platform and the ground becomes large; when the platform descends, the angle between the platform and the ground needs to be adjusted to be small, the limiting assembly is separated from the toothed bar, the platform descends under the action of the gravity of the platform, the buffering assembly plays a role to prevent the descending speed of the platform from being too high, and adjustment can be completed by meshing the limiting assembly with the toothed bar when the platform descends to the needed angle; the angle of the platform can be adjusted.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel fire simulation technology, and in particular relates to a platform device with slope adjustment function. Background Technology

[0002] With the increasing demand for railway transportation in complex terrain areas, railway tunnels are being built in many plateau and mountainous regions, highlighting the urgent need for in-depth research into tunnel construction technology.

[0003] In actual tunnel construction, slopes are common. These slopes not only affect the structural stability of the tunnel, but also directly relate to evacuation and rescue in emergencies such as fires. In order to make the small-scale tunnel fire simulation experiment on slope in the laboratory more realistic and improve the accuracy and reliability of the experimental results, a platform device with slope adjustment function is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a platform device with slope adjustment function to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A platform device with slope adjustment function includes: a platform, a fixed frame hinged to one end of the platform and fixed to the ground, two first support mechanisms provided in the middle of the platform, two second support mechanisms provided at the other end of the platform, the two first support mechanisms and the two second support mechanisms being located on both sides of the platform respectively, and the second support mechanisms being drivenly connected to a power mechanism.

[0007] The first support mechanism includes a vertically arranged toothed rod, with a base fixed to the bottom end of the toothed rod. The base is fixed to the ground. A mounting box is slidably connected to the toothed rod. A third spring is sleeved on the outside of the toothed rod, located between the base and the mounting box. The platform is mounted above the mounting box. A limit component and a buffer component are provided inside the mounting box. The limit component meshes with the toothed rod, and the buffer component is drive-connected to the limit component. The second support mechanism has the same structure as the first support mechanism. The limit component in the second support mechanism is drive-connected to the power mechanism.

[0008] In a platform device with slope adjustment function according to the present invention, a horizontally arranged support plate is fixedly connected to one side of the mounting box, and a second rotating shaft is provided on the top surface of the support plate. The second rotating shaft is installed on the bottom surface of the platform through a third shaft seat, and the axis of the second rotating shaft is perpendicular to the length direction of the platform.

[0009] The utility model discloses a platform device with slope regulation function, the top of fixed frame is firmly connected with two first axle seat, and the rotation is connected with first rotating shaft between two first axle seat, and the rotation is connected with two second axle seat on first rotating shaft, and two second axle seat is firmly connected on the bottom surface of platform, and the second axle seat is located one end of platform, and the axis of second axle seat is perpendicular to the length direction of platform.

[0010] The utility model discloses a platform device with slope regulation function, the limiting component includes the fourth rotating shaft that rotates and is connected in the installation box, and the outer side wall of fourth rotating shaft is coaxially firmly connected with gear, and gear is engaged with toothed rod, and the inner side wall of installation box is hinged with first pawl through first connecting rod, and first pawl is firmly connected with first connecting rod, and the one end of first pawl is away from first connecting rod and is engaged with gear, and one end of first connecting rod is projected installation box and is firmly connected with first knob, and the one end of first pawl is close to first connecting rod and is equipped with two first slope, and two first slope are along first connecting rod and set up symmetrically, and the inner side wall of installation box is equipped with first installation hole, and first installation hole is slidably connected with first top pin, and the top of first top pin is projected first installation hole and is abutted with one of first slope, and first installation hole is equipped with first spring, and the both ends of first spring are respectively abutted with first top pin and the bottom wall of first installation hole.

[0011] The utility model discloses a platform device with slope regulation function, the buffer assembly includes the damping cylinder that is firmly connected in the installation box, and the damping cylinder is coaxially covered and is established on the outer side wall of fourth rotating shaft, and the both ends of damping cylinder are slidably connected with fourth rotating shaft and are sealed and set up, and the damping cylinder is filled with damping liquid, and the outer side wall of fourth rotating shaft is firmly connected with a plurality of fin groups, and a plurality of fin groups are located in the damping cylinder, and a plurality of fin groups are along the length direction of fourth rotating shaft and set up at interval, and the fin group includes a plurality of fins, and a plurality of fins are set up at interval in the circumference, and the distance is left between fin and the inner wall of damping cylinder, and the fin in adjacent two fin groups is staggered and set up.

[0012] The utility model discloses a platform device with slope regulation function, power mechanism includes transmission shaft, one end of transmission shaft is passed into the installation box with fourth pivot coaxial fixedly connected, the outside wall on transmission shaft is equipped with a plurality of ratchet tooth that interval is opened in circumference, the outside wall on transmission shaft is equipped with transmission box, the inboard wall on transmission box is hinged with second pawl through second connecting rod, second pawl is fixedly connected with second connecting rod, second pawl is engaged with ratchet tooth, one end of second connecting rod is projected transmission box and is fixedly connected with second knob, the one end of second pawl is close to second connecting rod and is equipped with two second slope face, two second slope face is along second connecting rod and is set out symmetrically, the inboard wall on transmission box is equipped with second mounting hole, second top pin is slidably connected in second mounting hole, the top of second top pin is passed through second mounting hole and is abutted with one of second slope face, second mounting hole is equipped with second spring, and the both ends of second spring are respectively abutted with second top pin and the bottom wall of second mounting hole.

[0013] The utility model discloses a platform device with slope regulation function, the outside wall on transmission box is fixedly connected with handle.

[0014] Compared with the prior art, the utility model has the following advantages and technical effects:

[0015] In the utility model, one end of the platform is hinged to the fixed frame, two first supporting mechanisms are arranged at the middle of the platform, and two second supporting mechanisms are arranged at the other end of the platform. The first supporting mechanism and the second supporting mechanism are used to support the platform. When the angle between the platform and the ground needs to be increased, the power mechanism drives the limiting mechanism in the second supporting mechanism to move, thereby driving the installation box to rise, driving the end of the platform away from the fixed frame to lift, and increasing the angle between the platform and the ground. When the angle between the platform and the ground needs to be reduced, the limiting assembly is disengaged from the tooth rod. At this time, the platform is lowered under the action of its own gravity. At this time, the buffer assembly works to avoid the excessive speed of the platform. When the platform is lowered to the required angle, the limiting assembly is engaged with the tooth rod, and the adjustment is completed.

[0016] The utility model can realize the angle adjustment of the platform. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings:

[0018] Figure 1 It is the front view of the utility model.

[0019] Figure 2 is a right view of the second supporting mechanism in the utility model;

[0020] Figure 3 is Figure 1 is an enlarged view of A in the middle;

[0021] 1, fixed frame; 2, first shaft seat; 3, second shaft seat; 4, first rotating shaft; 5, platform; 6, base; 7, supporting plate; 8, second rotating shaft; 9, third shaft seat; 10, rack; 11, mounting box; 12, handle; 13, gear; 14, damping cylinder; 15, fourth rotating shaft; 16, fin; 17, damping liquid; 18, first pawl; 19, first top pin; 20, first spring; 21, first connecting rod; 22, first knob; 23, transmission box; 24, transmission shaft; 25, second pawl; 26, second knob; 27, second connecting rod; 28, second spring; 29, second top pin. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0024] In the related art, a multi-angle adjusting electric lifting platform includes a lower base module and an upper module installed at the upper end of the lower base module. The lower base module includes a lower base, a first drive motor fixedly installed at one end surface of the lower base, a first bidirectional screw rod penetrating through the side end of the lower base and fixedly connected to the output shaft of the first drive motor, a second bidirectional screw rod rotatably connected to the other end of the first bidirectional screw rod and the inner wall of the lower base away from the first drive motor, and a horizontal adjusting mechanism installed at the lower end of the upper module. The first bidirectional screw rod and the second bidirectional screw rod are parallelly arranged and mechanically linked, and each is symmetrically screwed with two first nut blocks. The upper end of each first nut block is hingedly installed with a cross top plate, and the two cross top plates are connected at the middle portion. The upper end of each cross top plate is slidably hingedly connected to the lower end of the upper module. The other end of each first bidirectional screw rod is fixedly sleeved with a transmission wheel, and the two transmission wheels are connected by a transmission belt. The upper module includes a horizontal adjusting mechanism, an angle adjusting mechanism installed at the upper end of the horizontal adjusting mechanism, and a platform installed at the upper end of the angle adjusting mechanism. The horizontal adjusting mechanism includes a horizontal adjusting drive plate slidably hingedly connected to the upper end of the cross top plate at the lower end, a first handle installed at one side of the horizontal adjusting drive plate, a first screw rod horizontally arranged and penetrating through the horizontal adjusting drive plate at one end of the first handle, and a horizontal adjusting plate screwed on the first screw rod and rotatably connected to the inner wall of the horizontal adjusting drive plate at the other end of the first screw rod. The upper end of the horizontal adjusting drive plate is open, and the upper end surface of the horizontal adjusting plate is fixedly connected to the lower end surface of the angle adjusting mechanism. A limiting block is symmetrically slidably sleeved on the first screw rod, fixedly connected to the inner wall of the horizontal adjusting drive plate, and symmetrically arranged at both sides of the horizontal adjusting plate. The horizontal adjusting plate and the horizontal adjusting drive plate are slidably attached to the inner bottom surface of the horizontal adjusting drive plate along the horizontal direction, and the lower end surface of the first nut block is slidably attached to the inner bottom surface of the lower base along the horizontal direction. The angle adjusting mechanism includes an angle adjusting drive plate fixedly installed at the upper end surface of the horizontal adjusting plate, a second handle arranged at one side of the angle adjusting drive plate, a worm gear fixedly sleeved on the angle adjusting drive plate at one end of the second handle, a worm rotatably engaged with the worm gear at one end, two vertically arranged second screw rods mechanically linked to the bottom of the worm and symmetrically arranged at both sides of the worm, a second nut block screwed on the second screw rod and slidably connected to the inner wall of the angle adjusting drive plate along the vertical direction, a slide rail fixedly connected to the inner wall of the angle adjusting drive plate by bolts, an angle adjusting jack fixedly installed at the side end of the second nut block, an angle adjusting top rod slidably penetrating through the top end of the angle adjusting drive plate along the vertical direction and symmetrically slidably hingedly connected to the lower end of the platform along the horizontal direction, a support plate block hingedly installed at the lower end of the end portion of the platform away from the angle adjusting jack, and the support plate block fixedly installed at the upper end surface of the angle adjusting drive plate. The bottom of the worm is fixedly sleeved with a first sprocket, the bottom of each second screw rod is fixedly sleeved with a second sprocket, and the first sprocket and the two second sprockets are sequentially connected by a chain.The lower end of the inner bottom of the lower base is fixedly provided with four second limiting jacks in a rectangular array, a first limiting jack is slidably installed in the second limiting jack in a vertical direction, the upper end of the first limiting jack penetrates the upper end of the second limiting jack, and the upper ends of the four first limiting jacks are fixedly installed on the lower end face of the horizontal adjustment driving plate in a rectangular array. The beneficial effects of the technology are: 1. The multi-angle adjustment electric lifting platform can drive the first bidirectional screw rod to rotate by starting the first driving motor, the rotating first bidirectional screw rod drives the second bidirectional screw rod to rotate through the transmission wheel and the transmission belt, the rotating one-way screw rod and the second bidirectional screw rod drive the two first nut blocks on the upper end thereof to move towards or away from each other, thereby automatically adjusting the height of the upper mold set. 2. The multi-angle adjustment electric lifting platform can drive the horizontal adjustment plate to move horizontally by twisting the first handle, thereby adjusting the upper mold set in the horizontal direction, and the limiting block can limit the adjustment range of the upper mold set in the horizontal direction, thereby protecting the adjustment within the safe area. 3. The multi-angle adjustment electric lifting platform can drive the worm to rotate by twisting the second handle, thereby driving the second screw rod to rotate through the first sprocket, the second sprocket and the chain, thereby driving the second nut block to move up and down and driving the angle adjustment jack to move up and down. The angle adjustment jack moving up can lift one end of the platform to achieve angle adjustment of the platform. The present application can be compatible with different specifications of products to realize multi-angle adjustment, accurate positioning, large bearing capacity, convenient operation, space saving, compatibility with multiple sizes and varieties, replacement of manual operation and great improvement of work efficiency.

[0025] A platform for machining with adjustable angle, comprising a base, a horizontal angle adjusting device is installed on the top of the base, a lifting mechanism is installed on the top of the horizontal angle adjusting device, a vertical angle adjusting device is installed on the top of the lifting mechanism, a workbench is installed on the top of the vertical angle adjusting device, machining piece fixing devices are arranged at the four corners of the workbench, an open source single-chip microcomputer is installed on the bottom side of the workbench, and a wireless transceiver is installed on the side of the open source single-chip microcomputer, the open source single-chip microcomputer and the wireless transceiver are bidirectionally electrically connected, and the input end of the open source single-chip microcomputer is connected with the output end of an external power supply.

[0026] The horizontal angle adjusting device comprises a first servo motor, the first servo motor is installed on the top of the base, a mounting seat is fixed on the output shaft of the first servo motor, the lifting mechanism is installed on the top of the mounting seat, and the output end of the open source single-chip microcomputer is connected with the input end of the first servo motor.

[0027] The lifting mechanism comprises an electric telescopic rod, the electric telescopic rod is installed at the four corners of the top of the mounting seat, a mounting frame is fixed on the telescopic end of the electric telescopic rod, the vertical angle adjusting device is installed on the top of the mounting frame, and the output end of the open source single-chip microcomputer is connected with the input end of the electric telescopic rod.

[0028] The vertical angle adjusting device comprises a second servo motor, which is installed on the top of the mounting frame, a connecting rod is fixed on the output shaft of the second servo motor, a connecting seat is connected to the end of the connecting rod, and the workbench is distributed on the top of the connecting seat, and the output end of the open source single-chip microcomputer is connected with the input end of the second servo motor.

[0029] The workpiece fixing device comprises a connecting frame, the end of the connecting frame is welded with the workbench, the top of the connecting frame is installed with an electric mechanical arm, the end of the electric mechanical arm is fixed with a clamp, and the output end of the open source single-chip microcomputer is connected with the input end of the electric mechanical arm.

[0030] The technical beneficial effects are that: the angle-adjustable machining platform can be remotely controlled, is convenient to operate, has good safety, the workbench work angle is adjusted through the horizontal angle adjusting device and the vertical angle adjusting device, has good flexibility, strong maneuverability, strong adjustment capacity, high automation level, greatly improves the machining efficiency, the height of the workbench is adjusted through the lifting mechanism, has strong adaptability, can meet the use requirement, the workpiece is fixed through the workpiece fixing device, has high degree of freedom, can fix workpieces with different characteristics, and greatly improves the use range of the machining platform.

[0031] Reference Figures 1 to 3 The utility model discloses a platform device with slope regulation function, include: platform 5, one end of platform 5 is hinged with fixed frame 1, and fixed frame 1 is fixed on the ground, and the middle part of platform 5 is provided with two first support mechanisms, and the other end of platform 5 is provided with two second support mechanisms, and two first support mechanisms and two second support mechanisms are located at the both sides of platform 5 respectively, and second support mechanism is driven connection with power mechanism,

[0032] The first support mechanism comprises a vertically arranged toothed rod 10, the bottom end of the toothed rod 10 is fixedly connected with a base 6, the base 6 is fixed on the ground, a mounting box 11 is slidably connected to the toothed rod 10, a third spring is sleeved on the outer side of the toothed rod 10, the third spring is located between the base 6 and the mounting box 11, the platform 5 is overlapped above the mounting box 11, a limiting assembly and a buffer assembly are arranged in the mounting box 11, the limiting assembly is engaged with the toothed rod 10, the buffer assembly is drivingly connected with the limiting assembly, the second support mechanism has the same structure as the first support mechanism, and the limiting assembly in the second support mechanism is drivingly connected with the power mechanism.

[0033] The utility model discloses, one end of platform 5 is hinged in fixed frame 1, the middle place of platform 5 is provided with two first support mechanism, the other end of platform 5 is provided with two second support mechanism, and the support of platform 5 is realized through first support mechanism and second support mechanism, when needing the angle between platform 5 and ground is adjusted, through power mechanism drive the motion of limiting mechanism in second support mechanism, and then drive installation box 11 to go up, drive the one end of platform 5 to lift away from fixed frame 1, the angle between platform 5 and ground becomes big, when needing the angle between platform 5 and ground is adjusted, disengage limiting assembly and rack 10, platform 5 drops under the action of gravity at this moment, at this moment, buffering assembly functions, avoid the descending speed of platform 5 too big, platform 5 reduces to the angle needed, and limiting assembly and rack 10 are engaged, can complete adjustment.

[0034] The utility model discloses can realize the angle adjustment of platform 5.

[0035] In an alternative scheme, the side of installation box 11 is fixedly connected with a horizontally arranged supporting plate 7, the top surface of the supporting plate 7 is provided with a second rotating shaft 8, the second rotating shaft 8 is installed on the bottom surface of the platform 5 through a third shaft seat 9, and the axis of the second rotating shaft 8 is perpendicular to the length direction of the platform 5.

[0036] The second rotating shaft 8 is lapped on the supporting plate 7, and the length of the supporting plate 7 is greater than the horizontal displacement of the second rotating shaft 8, so that the second rotating shaft 8 and the supporting plate 7 are prevented from being disengaged.

[0037] In an alternative scheme, the top surface of the fixed frame 1 is fixedly connected with two first shaft seats 2, the first rotating shaft 4 is rotatably connected between the two first shaft seats 2, two second shaft seats 3 are rotatably connected to the first rotating shaft 4, the two second shaft seats 3 are fixedly connected to the bottom surface of the platform 5, the second shaft seat 3 is located at one end of the platform 5, and the axis of the second shaft seat 3 is perpendicular to the length direction of the platform 5.

[0038] The fixed frame 1 is hinged to the platform 5 through the first rotating shaft 4, and the fixed frame 1 is fixed to the ground, so that the firmness and stability of the platform 5 are ensured.

[0039] In an alternative scheme, the limiting assembly comprises a fourth rotating shaft 15 rotatably connected in the mounting box 11, a gear 13 coaxially fixed on the outer side wall of the fourth rotating shaft 15, the gear 13 being engaged with the toothed rod 10, a first pawl 18 hingedly connected to the inner side wall of the mounting box 11 through a first connecting rod 21, the first pawl 18 being fixed to the first connecting rod 21, the end of the first pawl 18 away from the first connecting rod 21 being engaged with the gear 13, one end of the first connecting rod 21 extending out of the mounting box 11 and being fixed with a first knob 22, the end of the first pawl 18 close to the first connecting rod 21 being provided with two first inclined surfaces, the two first inclined surfaces being symmetrically arranged along the first connecting rod 21, a first mounting hole being formed in the inner side wall of the mounting box 11, a first jack 19 being slidably connected in the first mounting hole, the top end of the first jack 19 extending out of the first mounting hole and abutting against one of the first inclined surfaces, a first spring 20 being arranged in the first mounting hole, the two ends of the first spring 20 abutting against the first jack 19 and the bottom wall of the first mounting hole respectively.

[0040] The gear 13 is engaged with the toothed rod 10, when the mounting box 11 is lowered, at this time the gear 13 rotates clockwise, the first pawl 18 is located on the side of the gear 13 away from the toothed rod 10 and is engaged with the gear 13, preventing the gear 13 from rotating, thereby playing a limiting role;

[0041] When the mounting box 11 is raised, at this time the gear 13 rotates counterclockwise, the first spring 20 always abuts the first inclined surface close to the gear 13 with the first jack 19, providing the first pawl 18 with elastic force, ensuring that the first pawl 18 is always engaged with the gear 13, ensuring that the limiting role can be played;

[0042] When limiting is not needed, the first connecting rod 21 is rotated by the first knob 22, the first pawl 18 is rotated by the first connecting rod 21, another first inclined surface abuts the first jack 19, at this time the first pawl 18 is always disengaged from the gear 13, the mounting box 11 can be raised and lowered at will.

[0043] In an alternative scheme, the damping assembly comprises a damping cylinder 14 fixed in the mounting box 11, the damping cylinder 14 being coaxially sleeved on the outer side wall of the fourth rotating shaft 15, the two ends of the damping cylinder 14 being slidably connected to the fourth rotating shaft 15 and being sealingly arranged, the damping cylinder 14 being filled with damping liquid 17, a plurality of fin groups being fixed on the outer side wall of the fourth rotating shaft 15, the plurality of fin groups being located in the damping cylinder 14, the plurality of fin groups being equally spaced along the length direction of the fourth rotating shaft 15, the fin group comprising a plurality of fins 16, the plurality of fins 16 being equally spaced in the circumferential direction, a distance being left between the fins 16 and the inner wall of the damping cylinder 14, the fins 16 in adjacent two fin groups being staggered.

[0044] The rotation of the fourth rotating shaft 15 is buffered by the viscosity of the damping liquid 17, the resistance of the damping liquid 17 to the rotation of the fourth rotating shaft 15 is further enhanced by the arrangement of the fins 16.

[0045] The inner side wall of the damping cylinder 14 can also be provided with a plurality of baffles arranged along the length direction of the damping cylinder 14, and the plurality of baffles are arranged at equal intervals in the circumferential direction and do not interfere with the fins 16, thereby further increasing the resistance of the damping liquid 17 to the rotation of the fourth rotating shaft 15.

[0046] In an alternative scheme, the power mechanism includes a transmission shaft 24, one end of the transmission shaft 24 penetrates into the mounting box 11 and is coaxially fixedly connected with the fourth rotating shaft 15, a plurality of ratchets are arranged at equal intervals in the circumferential direction on the outer side wall of the transmission shaft 24, the transmission box 23 is sleeved on the outer side wall of the transmission shaft 24, the second pawl 25 is hingedly connected to the second connecting rod 27 on the inner side wall of the transmission box 23, the second pawl 25 is fixedly connected with the second connecting rod 27, the second pawl 25 is engaged with the ratchet, one end of the second connecting rod 27 protrudes out of the transmission box 23 and is fixedly connected with the second knob 26, two second inclined surfaces are arranged on the end of the second pawl 25 close to the second connecting rod 27, the two second inclined surfaces are symmetrically arranged along the second connecting rod 27, a second mounting hole is arranged on the inner side wall of the transmission box 23, a second jack 29 is slidably connected in the second mounting hole, the top end of the second jack 29 penetrates out of the second mounting hole and abuts against one of the second inclined surfaces, a second spring 28 is arranged in the second mounting hole, and the two ends of the second spring 28 abut against the second jack 29 and the bottom wall of the second mounting hole, respectively.

[0047] In an alternative scheme, the outer side wall of the transmission box 23 is fixedly connected with the handle 12.

[0048] When it is necessary to increase the angle between the platform 5 and the ground, at this time the second pawl 25 is engaged with the ratchet on the outer side wall of the transmission shaft 24, the transmission shaft 24 is rotated counterclockwise by rotating the handle 12 counterclockwise, the gear 13 is rotated counterclockwise by the counterclockwise rotation of the transmission shaft 24, the first jack 19 is always abutted against the first inclined surface close to the gear 13 by the first spring 20, thereby providing elastic force for the first pawl 18, ensuring that the first pawl 18 is always engaged with the gear 13, ensuring that the limiting effect can be achieved, avoiding the lowering of the mounting box 11, then the handle 12 is rotated clockwise, the transmission box 23 and the transmission shaft 24 are idled by the clockwise rotation of the handle 12, and then the above process is repeated to lift the end of the platform 5 by the mounting box 11.

[0049] When it is necessary to decrease the angle between the platform 5 and the ground, the second connecting rod 27 is driven by the second knob 26, the second pawl 25 is separated from the ratchet by the second connecting rod 27, then the first connecting rod 21 is rotated by the first knob 22, the first pawl 18 is rotated by the first connecting rod 21, so that the other first inclined surface abuts against the first jack 19, at this time the first pawl 18 is always disengaged from the gear 13, and the mounting box 11 can be lowered at will.

[0050] In the description of the utility model, need understanding is, the term "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as limiting the utility model.

[0051] The above-described embodiments are only descriptions of the preferred modes of the utility model, and do not limit the scope of the utility model, and various modifications and improvements to the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model should fall within the protection scope defined by the claims of the utility model.

Claims

1. A platform device having a slope adjustment function, characterized by comprising: Include: Platform (5), one end of the platform (5) is hinged with a fixed frame (1), the fixed frame (1) is fixed on the ground, the middle of the platform (5) is provided with two first support mechanisms, the other end of the platform (5) is provided with two second support mechanisms, two first support mechanisms and two second support mechanisms are located on both sides of the platform (5) respectively, the second support mechanism is drivingly connected with a power mechanism; The first support mechanism comprises a vertically arranged tooth rod (10), the bottom end of the tooth rod (10) is fixedly connected with a base (6), the base (6) is fixed on the ground, a mounting box (11) is slidably connected on the tooth rod (10), a third spring is sleeved on the outer side of the tooth rod (10), the third spring is located between the base (6) and the mounting box (11), the platform (5) is overlapped above the mounting box (11), the mounting box (11) is provided with a limiting assembly and a buffer assembly, the limiting assembly is engaged with the tooth rod (10), the buffer assembly is drivingly connected with the limiting assembly, the second support mechanism is the same as the first support mechanism, the limiting assembly in the second support mechanism is drivingly connected with the power mechanism.

2. The platform device with slope adjustment function according to claim 1, characterized in that: One side of the mounting box (11) is fixedly connected with a horizontally arranged supporting plate (7), a second rotating shaft (8) is arranged on the top surface of the supporting plate (7), the second rotating shaft (8) is installed on the bottom surface of the platform (5) through a third shaft seat (9), the axis of the second rotating shaft (8) is perpendicular to the length direction of the platform (5).

3. The platform device with slope adjustment function according to claim 1, characterized in that: The top surface of the fixed frame (1) is fixedly connected with two first shaft seats (2), a first rotating shaft (4) is rotatably connected between the two first shaft seats (2), two second shaft seats (3) are rotatably connected on the first rotating shaft (4), the two second shaft seats (3) are fixedly connected on the bottom surface of the platform (5), the second shaft seat (3) is located at one end of the platform (5), the axis of the second shaft seat (3) is perpendicular to the length direction of the platform (5).

4. The platform device having a slope adjustment function according to claim 1, characterized in that: The limiting assembly comprises a fourth rotating shaft 15 rotatably connected in the mounting box 11, a gear 13 coaxially fixed on the outer side wall of the fourth rotating shaft 15, the gear 13 being engaged with the toothed rod 10, a first pawl 18 hingedly connected to the inner side wall of the mounting box 11 through a first connecting rod 21, the first pawl 18 being fixed to the first connecting rod 21, one end of the first pawl 18 away from the first connecting rod 21 being engaged with the gear 13, one end of the first connecting rod 21 extending out of the mounting box 11 and being fixed with a first knob 22, two first inclined surfaces being formed on one end of the first pawl 18 close to the first connecting rod 21, the two first inclined surfaces being symmetrically arranged along the first connecting rod 21, a first mounting hole being formed in the inner side wall of the mounting box 11, a first top pin 19 being slidably connected in the first mounting hole, the top end of the first top pin 19 extending out of the first mounting hole and abutting against one of the first inclined surfaces, a first spring 20 being arranged in the first mounting hole, two ends of the first spring 20 abutting against the first top pin 19 and the bottom wall of the first mounting hole respectively.

5. The platform device with slope adjustment function according to claim 4, characterized in that: The buffering assembly comprises a damping cylinder 14 fixed in the mounting box 11, the damping cylinder 14 being coaxially sleeved on the outer side wall of the fourth rotating shaft 15, two ends of the damping cylinder 14 being slidably connected and sealingly arranged with the fourth rotating shaft 15, the damping cylinder 14 being filled with damping liquid 17, a plurality of fin groups being fixed on the outer side wall of the fourth rotating shaft 15, the plurality of fin groups being located in the damping cylinder 14, the plurality of fin groups being equidistantly arranged along the length direction of the fourth rotating shaft 15, each fin group comprising a plurality of fins 16, the plurality of fins 16 being equidistantly arranged in the circumferential direction, a distance being left between the fins 16 and the inner wall of the damping cylinder 14, the fins 16 in adjacent two fin groups being staggered arranged.

6. The platform device having a slope adjustment function according to claim 4, characterized in that: The power mechanism comprises a transmission shaft (24), one end of the transmission shaft (24) penetrates into the mounting box (11) and is coaxially fixedly connected with the fourth rotating shaft (15), a plurality of ratchet teeth are equidistantly and circumferentially arranged on the outer side wall of the transmission shaft (24), a transmission box (23) is sleeved on the outer side wall of the transmission shaft (24), a second pawl (25) is hingedly connected to the inner side wall of the transmission box (23) through a second connecting rod (27), the second pawl (25) is fixedly connected with the second connecting rod (27), the second pawl (25) is engaged with the ratchet teeth, one end of the second connecting rod (27) protrudes out of the transmission box (23) and is fixedly connected with a second knob (26), two second slope surfaces are arranged on the end of the second pawl (25) close to the second connecting rod (27), the two second slope surfaces are symmetrically arranged along the second connecting rod (27), a second mounting hole is arranged on the inner side wall of the transmission box (23), a second jack pin (29) is slidably connected in the second mounting hole, the top end of the second jack pin (29) penetrates out of the second mounting hole and abuts against one of the second slope surfaces, a second spring (28) is arranged in the second mounting hole, the two ends of the second spring (28) respectively abut against the second jack pin (29) and the bottom wall of the second mounting hole.

7. The platform device with slope adjustment function according to claim 6, characterized in that: A handle (12) is fixedly connected to the outer side wall of the transmission box (23).

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