A universal safety stool

Abstract

This application provides a universal safety seat, comprising: a movable support frame; a lifting frame, vertically slidably connected to the movable support frame for raising and lowering relative to the movable support frame, wherein the side of the lifting frame away from the support frame is used to contact the vehicle to lift the vehicle; an electro-hydraulic lifter, located on the support frame, with its lifting end located below the lifting frame to lift the lifting frame; a locking mechanism, detachably connected to the movable support frame and the lifting frame to lock the vertical sliding connection between the lifting frame and the movable support frame; and a fall-prevention mechanism, rotatably connected to the movable support frame to apply a fall-prevention function to the lifting frame when rotated to connect with the lifting frame. The universal safety seat provided by this application can achieve adaptive height adjustment to accommodate vehicles with different chassis heights, improving practicality.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to a universal safety stool. Background Technology

[0002] Existing safety seats have a fixed height and can only be used for one type of vehicle. Most vehicle frames are lower in the front and higher in the rear. Because of their fixed height, existing safety seats prevent the rear wheels from leaving the ground when supporting the frame, making vehicle maintenance and repair inconvenient and impractical. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose a universal safety stool to solve the problem of poor practicality of safety stools.

[0004] To achieve the above objectives, this utility model provides a universal safety stool, comprising:

[0005] Movable support frame;

[0006] A lifting frame is vertically slidably connected to the movable support frame to lift and lower relative to the movable support frame. The side of the lifting frame away from the support frame is used to contact the vehicle to lift the vehicle.

[0007] An electric hydraulic lift is located on the support frame, with its lifting end positioned below the lifting frame to lift the lifting frame;

[0008] A locking mechanism is detachably connected to the movable support frame and the lifting frame to lock the vertical sliding connection between the lifting frame and the movable support frame.

[0009] A fall arrestor is rotatably connected to the movable support frame to provide fall arrest protection for the lifting frame when rotated to connect with it.

[0010] Furthermore, the lifting frame includes a lifting ratchet and a lifting plate connected together. The lifting plate is used to contact the vehicle. The lifting ratchet is vertically slidably connected to the movable support frame. The anti-fall mechanism and the locking mechanism are both connected to the lifting ratchet.

[0011] Furthermore, the fall arrestor includes a pawl and a wrench connected together. The wrench is rotatably connected to the movable support frame. Under the rotation of the wrench, the pawl engages with or disengages from the lifting ratchet rack.

[0012] Furthermore, the movable support frame is provided with a horizontal connecting through hole, the lifting ratchet passes through the horizontal connecting through hole and is vertically slidably connected to the movable support frame, and the wrench is rotatably connected to the horizontal connecting through hole.

[0013] Furthermore, the horizontal connecting through hole is provided with a connecting lug, and the wrench is rotatably connected to the connecting lug; the locking mechanism is detachably connected to the connecting lug.

[0014] Furthermore, the locking mechanism includes a safety pin, and the connecting ears include a first ear and a second ear disposed opposite to each other. The first ear and the second ear are provided with connecting holes that pass through each other. The safety pin passes through the connecting holes and is detachably connected to the movable support frame.

[0015] The safety pin is located between two adjacent ratchet teeth on the lifting ratchet rack, and locks the lifting ratchet rack.

[0016] Furthermore, the movable support frame includes a support frame body connected to it and adjustable casters, the adjustable casters being used to move or stop the support frame body.

[0017] Furthermore, the adjustable caster wheel is a foldable caster wheel, which includes a folding component and a caster wheel body connected together, and the folding component is connected to the support frame body;

[0018] When the folding component is folded, the caster body is located at the bottom of the support frame body to drive the support frame body to move; when the folding component is unfolded, the caster body is located on the side of the support frame body, the folding component is in contact with the ground, and the support frame body stops moving.

[0019] Furthermore, the folding component includes a first connecting plate and a second connecting plate that are rotatably connected, the first connecting plate being connected to the support frame body, and the second connecting plate being connected to the caster wheel body;

[0020] When the second connecting plate is rotated to be positioned opposite the first connecting plate, the omnidirectional wheel body is located at the bottom of the support frame body, and the folding member is folded; when the second connecting plate is rotated to be positioned side by side with the first connecting plate, the omnidirectional wheel body is located on the side of the support frame body, both the first connecting plate and the second connecting plate are in contact with the ground, and the folding member is unfolded.

[0021] Furthermore, the main body of the support frame includes a load-bearing part and a connecting part connected to each other. The connecting part is connected to the foldable caster wheels and the lifting frame, and the load-bearing part is connected to the electric hydraulic lift.

[0022] As can be seen from the above description, the universal safety stool provided by this utility model achieves adaptive height adjustment by setting a movable support frame, a lifting frame, and an electric hydraulic lifting mechanism. Furthermore, by incorporating a locking mechanism and an anti-fall mechanism, it can prevent the lifting frame from suddenly falling during use, thus improving the stability of the universal safety stool and consequently enhancing its practicality. The universal safety stool provided by this application can achieve adaptive height adjustment to accommodate vehicles with different chassis heights, improving practicality. The movable support frame eliminates the need for users to carry the universal safety stool, greatly enhancing its convenience and practicality. The locking mechanism and anti-fall mechanism improve the connection stability between the lifting frame and the movable support frame, further enhancing the practicality of the universal safety stool. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the universal safety stool in a moving state according to an embodiment of the present utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of the universal safety stool in the embodiment of this utility model when it is in a stopped state.

[0026] In the diagram: 10. Movable support frame; 11. Horizontal connecting through hole; 12. Connecting ear; 13. Support frame body; 131. Bearing part; 132. Connecting part; 14. Adjustable caster wheel; 20. Lifting frame; 21. Lifting ratchet rack; 22. Lifting plate; 30. Electric hydraulic lift; 40. Locking mechanism; 41. Safety pin; 50. Anti-fall mechanism; 51. Pawl; 52. Wrench; 60. Foldable caster wheel; 61. Folding part; 611. First connecting plate; 612. Second connecting plate; 62. Caster wheel body; Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0028] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] As described in the background section, vehicle safety seats are typically used to support the vehicle chassis, allowing users to perform vehicle repairs and maintenance in the field or other locations lacking suitable facilities. Existing safety seats are fixed in structure and height, adaptable only to one type of vehicle model. Furthermore, most vehicle frames are front-lower-rear-higher, requiring at least two safety seats for each model, one for the front chassis and one for the rear chassis. Therefore, there is a need for a safety seat adaptable to multiple vehicle models to facilitate vehicle repair and maintenance.

[0030] The present application will be described in detail below through one or more specific embodiments.

[0031] In some embodiments, a universal safety stool, such as Figure 1 and Figure 2 As shown, it includes:

[0032] Movable support frame 10;

[0033] The lifting frame 20 is vertically slidably connected to the movable support frame 10 to lift and lower relative to the movable support frame 10. The side of the lifting frame 20 away from the support frame is used to contact the vehicle to lift the vehicle.

[0034] An electric hydraulic lift 30 is located on the support frame, with its lifting end positioned below the lifting frame 20 to lift the lifting frame 20;

[0035] The locking mechanism 40 is detachably connected to the movable support frame 10 and the lifting frame 20 to lock the vertical sliding connection between the lifting frame 20 and the movable support frame 10.

[0036] The fall arrest mechanism 50 is rotatably connected to the movable support frame 10 so as to apply a fall arrest function to the lifting frame 20 when it is rotated to be connected to the lifting frame 20.

[0037] Specifically, the movable support frame 10 serves as the "base" of the universal safety seat, providing both support and enabling movement of the seat to improve its portability. The lifting frame 20 contacts the vehicle chassis to lift it, and can be raised and lowered relative to the movable support frame 10 to adjust the height of the safety seat. The electro-hydraulic lift 30 is located on the movable support frame 10, with its lifting end being a telescopic end. The height of the electro-hydraulic lift 30 can be adjusted by... The lifting height allows the lifting end of the electric hydraulic lift 30 to lift the lifting frame 20, thus achieving height adjustment of the lifting frame 20. When the locking mechanism 40 is connected to the movable support frame 10 and the lifting frame 20, it can lock the lifting frame 20, fixing the position of the lifting frame 20 relative to the movable support frame 10. That is, the lifting frame 20 and the movable support frame 10 are fixedly connected, which is beneficial for the lifting frame 20 to apply a stable lifting effect to the vehicle, thereby improving the stability of the universal safety seat.

[0038] The anti-fall mechanism 50 is used to prevent the lifting frame 20 from losing its lifting function relative to the movable support frame 10 due to force majeure during the vehicle lifting process, thereby causing the lifting frame 20 to move downward and damage the vehicle. The anti-fall mechanism 50 can apply a downward limiting effect to the lifting frame 20, i.e., the anti-fall effect, to prevent the lifting frame 20 from moving downward relative to the movable support frame 10, thereby preventing the vehicle from moving downward and causing damage.

[0039] It should be noted that when the anti-fall mechanism 50 is connected to the lifting frame 20, the lifting frame 20 can move upward under the lifting action of the electro-hydraulic lift 30 to lift the vehicle; when the electro-hydraulic lift 30 stops lifting and moves downward to shorten its lifting end height, the height of the lifting frame 20 relative to the movable support frame 10 is fixed under the anti-fall action of the anti-fall mechanism 50, which can provide stable support for the vehicle. That is, the anti-fall mechanism 50 restricts the downward movement of the lifting frame 20, but does not restrict the upward movement of the lifting frame 20.

[0040] In this embodiment, by setting up a movable support frame 10, a lifting frame 20, and an electro-hydraulic lifter 30, the height can be adaptively adjusted. Furthermore, by setting up a locking mechanism 40 and a fall protection mechanism 50, the lifting frame 20 can be prevented from suddenly falling during use, which improves the stability of the universal safety stool and thus enhances its practicality. The universal safety stool provided by this application can achieve adaptive height adjustment to adapt to vehicles with different chassis heights, improving practicality. The movable support frame 10 also prevents users from having to carry the universal safety stool, greatly improving its convenience and practicality. The locking mechanism 40 and the fall protection mechanism 50 improve the connection stability between the lifting frame 20 and the movable support frame 10, thereby enhancing the practicality of the universal safety stool.

[0041] In some embodiments, such as Figure 1 and Figure 2 As shown, the lifting frame 20 includes a lifting ratchet 21 and a lifting plate 22 connected to each other. The lifting plate 22 is used to contact the vehicle. The lifting ratchet 21 is vertically slidably connected to the movable support frame 10. The anti-fall mechanism 50 and the locking mechanism 40 are both connected to the lifting ratchet 21.

[0042] Specifically, the lifting plate 22 is positioned opposite to the lifting end of the electric hydraulic lift 30. The electric hydraulic lift 30 lifts the lifting plate 22, and the lifting plate 22 drives the lifting ratchet 21 to move upward. Correspondingly, the lifting ratchet 21 slides vertically upward relative to the movable support frame 10.

[0043] Both the anti-fall mechanism 50 and the locking mechanism 40 are connected to the lifting ratchet 21. By applying anti-fall and locking effects to the lifting ratchet 21, the anti-fall and locking effects are achieved on the lifting frame 20.

[0044] It should be noted that the lifting frame 20 includes two lifting ratchet racks 21, which are respectively connected to both ends of the lifting plate 22. The lifting plate 22 is horizontally arranged, and the lifting ratchet racks 21 are vertically arranged. The electric hydraulic lift 30 is located below the lifting plate 22, and its lifting end is arranged opposite to the lifting plate 22 to lift the lifting plate 22.

[0045] In this embodiment, the lifting frame 20 lifts the vehicle via the lifting plate 22, thereby achieving the lifting and lowering of the lifting frame 20. The lifting ratchet 21 slides vertically relative to the movable support frame 10, and the lifting ratchet 21, the anti-fall mechanism 50, and the locking mechanism 40 achieve the locking and anti-falling functions of the lifting frame 20 relative to the movable support frame 10. The lifting plate 22 and the lifting ratchet 21 are designed to improve the lifting stability of the lifting frame 20.

[0046] In some embodiments, the fall arrestor 50 includes a pawl 51 and a wrench 52 connected together. The wrench 52 is rotatably connected to the movable support frame 10. Under the rotation of the wrench 52, the pawl 51 engages with or disengages from the lifting ratchet rack 21.

[0047] Specifically, the pawl 51 and the wrench 52 are fixedly connected, and the wrench 52 is rotatably connected to the movable support frame 10. When the wrench 52 is rotated, the pawl 51 rotates with the wrench 52, and thus the pawl 51 is rotated by rotating the wrench 52. During the rotation, the pawl 51 engages with or disengages from the lifting ratchet 21. When the pawl 51 is engaged with the lifting ratchet 21, the fall protection mechanism 50 is simultaneously connected to the movable support frame 10 and the lifting frame 20. The lifting ratchet 21 cannot move downward under the action of the pawl 51, but can move upward, thereby achieving the fall protection function for the lifting frame 20.

[0048] It should be noted that the lifting ratchet 21 includes multiple ratches, which are inclined downwards. The pawl 51 is adapted to the ratches and is inclined upwards. When the pawl 51 engages with the ratches, it restricts the ratches from moving downwards, thus preventing the lifting ratchet 21 from moving downwards. When the ratches move upwards, the pawl 51 moves downwards with the ratches to engage with the next ratchet, thus enabling the lifting ratchet 21 to move upwards. Therefore, the anti-fall mechanism 50 can prevent the lifting frame 20 from moving downwards without affecting its upward movement.

[0049] In this embodiment, the anti-fall mechanism 50 achieves the anti-fall function of the lifting frame 20 through the meshing action of the pawl 51 and the lifting ratchet 21, thereby achieving a one-way limiting function of the lifting frame 20. This prevents the lifting frame 20 from being subjected to the lifting action of the electric hydraulic lift 30 only during the process of raising the vehicle, which would affect the uniformity of the force on the lifting frame 20 and thus affect the service life of the lifting frame 20. The setting of the anti-fall mechanism 50 is beneficial to improving the lifting stability of the universal safety seat for the vehicle.

[0050] In some embodiments, the movable support frame 10 is provided with a horizontal connecting through hole 11, the lifting ratchet 21 passes through the horizontal connecting through hole 11 and is vertically slidably connected to the movable support frame 10, and the wrench 52 is rotatably connected to the horizontal connecting through hole 11.

[0051] Specifically, the lifting ratchet 21 is vertically slidably connected to the movable support frame 10 through the horizontal connecting through hole 11. The pawl 51 of the anti-fall mechanism 50 is engaged with the ratchet on the lifting ratchet 21 to apply an anti-fall effect to the lifting ratchet 21. The wrench 52 of the anti-fall mechanism 50 is rotatably connected to the horizontal connecting through hole 11, which facilitates the engagement of the pawl 51 with the lifting ratchet 21 passing through the horizontal connecting through hole 11, thereby facilitating the anti-fall effect of the anti-fall mechanism 50 on the lifting ratchet 21.

[0052] It should be noted that the horizontal connecting through holes 11 provided on the movable support frame 10 are adapted to the size of the lifting ratchet 21 and correspond one-to-one. For example, if there are two lifting ratchet 21s, then the movable support frame 10 is provided with two horizontal connecting through holes 11 opposite to the two lifting ratchet 21s. When the movable support frame 10 has a multi-layer structure, each layer of the structure opposite to the lifting ratchet 21 is provided with one horizontal connecting through hole 11 so that the lifting ratchet 21 can pass through the multi-layer structure of the movable support frame 10 simultaneously.

[0053] In addition, the number of the anti-fall mechanism 50 and the locking mechanism 40 is the same as the number of the lifting ratchet 21. That is, each lifting ratchet 21 is provided with one anti-fall mechanism 50 and one locking mechanism 40, so that each lifting ratchet 21 is subjected to anti-fall and locking effects, which helps to improve the stability of the lifting ratchet 21 in use, and thus helps to improve the practicality of the universal safety stool.

[0054] In some embodiments, the horizontal connecting through hole 11 is provided with a connecting lug 12, and the wrench 52 is rotatably connected to the connecting lug 12; the locking mechanism 40 is detachably connected to the connecting lug 12.

[0055] Specifically, the connecting lug 12 is located around the horizontal connecting through hole 11 and surrounds the lifting ratchet 21. The wrench 52 is rotatably connected to the movable support frame 10 through the connecting lug 12. The setting of the connecting lug 12 facilitates the setting of the wrench 52, and does not affect the lifting ratchet 21 passing through the horizontal connecting through hole 11. The setting of the connecting lug 12 facilitates the setting of the locking mechanism 40 and the anti-fall mechanism 50. The locking mechanism 40 and the anti-fall mechanism 50 can be installed without affecting the main structure of the movable support frame 10, so that they can play a locking and anti-fall role on the lifting ratchet 21.

[0056] In some embodiments, the locking mechanism 40 includes a safety pin 41, and the connecting ear 12 includes a first ear and a second ear disposed opposite to each other. The first ear and the second ear are provided with connecting holes that pass through each other. The safety pin 41 passes through the connecting holes and is detachably connected to the movable support frame 10.

[0057] The safety pin 41 is located between two adjacent ratchet teeth on the lifting ratchet 21, and locks the lifting ratchet 21.

[0058] Specifically, the first ear and the second ear are respectively connected to the two side walls opposite to the horizontal connecting through hole 11, and are arranged opposite to each other. The connecting hole is arranged opposite to the ratchet teeth of the lifting ratchet 21, so that when the safety pin 41 passes through the connecting hole, the safety pin 41 is located between two adjacent ratchet teeth, limiting the ratchet teeth, thereby locking the lifting ratchet 21.

[0059] It should be noted that when the safety pin 41 is connected to the movable support frame 10, the safety pin 41 is located between two adjacent ratchet teeth, limiting the ratchet teeth; when the safety pin 41 is disconnected from the movable support frame 10, the locking effect on the lifting ratchet rack 21 is released.

[0060] In some embodiments, the movable support frame 10 includes a support frame body 13 connected to it and adjustable casters 14, the adjustable casters 14 being used to move or stop the support frame body 13.

[0061] Specifically, the support frame body 13 is used to connect with the lifting frame 20 and the electric hydraulic lift 30, and the adjustable casters 14 are used to drive the support frame body 13 to move, thereby driving the lifting frame 20 and the electric hydraulic lift 30 to move, improving the mobility of the universal safety stool.

[0062] It should be noted that the adjustable caster 14 is an adjustable structure. When the adjustable caster 14 is needed to move the support frame body 13, the adjustable caster 14 is adjusted to a state that can move the support frame body 13. When the adjustable caster 14 is not needed to move the support frame body 13, the adjustable caster 14 is adjusted to a state that cannot move the support frame body 13, that is, the support frame body 13 stops moving.

[0063] In some embodiments, the adjustable caster 14 is a foldable caster 60, which includes a folding member 61 and a caster body 62 connected together, and the folding member 61 is connected to the support frame body.

[0064] When the folding member 61 is folded, the universal wheel body 62 is located at the bottom of the support frame body to drive the support frame body to move; when the folding member 61 is unfolded, the universal wheel body 62 is located on the side of the support frame body, the folding member 61 is in contact with the ground, and the support frame body stops moving.

[0065] Specifically, the adjustable caster 14 is a foldable caster 60. By adjusting the folding state of the foldable caster 60, the foldable caster 60 can drive the support frame body 13 to move or stop driving the support frame body 13 to move.

[0066] When the folding member 61 is in a folded state, such as Figure 1 As shown, the caster wheel body 62 folds with the folding member 61, is located at the bottom of the support frame body, and is in contact with the ground, so as to drive the support frame body to move, thereby driving the universal safety stool to move; when the folding member 61 is in the unfolded state, as... Figure 2 As shown, the omnidirectional wheel body 62 unfolds with the folding member 61 and is located on the side of the support frame body, not in contact with the ground. The folding member 61 is in contact with the ground and cannot move the support frame body. As a result, the support frame body stops moving, that is, its position is fixed, which is beneficial to the stability of the universal safety stool when lifting the vehicle.

[0067] In some embodiments, the folding member 61 includes a first connecting plate 611 and a second connecting plate 612 that are rotatably connected. The first connecting plate 611 is connected to the support frame body, and the second connecting plate 612 is connected to the universal wheel body 62.

[0068] When the second connecting plate 612 is rotated to be positioned opposite the first connecting plate 611, the universal wheel body 62 is located at the bottom of the support frame body, and the folding member 61 is folded; when the second connecting plate 612 is rotated to be positioned side by side with the first connecting plate 611, the universal wheel body 62 is located on the side of the support frame body, both the first connecting plate 611 and the second connecting plate 612 are in contact with the ground, and the folding member 61 is unfolded.

[0069] Specifically, the second connecting plate 612 can rotate relative to the first connecting plate 611, thereby changing the state of the folding member 61. The side of the first connecting plate 611 away from the second connecting plate 612 is connected to the bottom of the support frame body, and the side of the second connecting plate 612 away from the first connecting plate 611 is connected to the universal wheel body 62. Therefore, when the second connecting plate 612 rotates to be opposite to the first connecting plate 611, that is, when the folding member 61 is in the folded state, the universal wheel body 62 is located at the bottom of the support frame body and is flush with the ground. When the second connecting plate 612 rotates to be arranged side by side with the first connecting plate 611, that is, when the first connecting plate 611 and the second connecting plate 612 are adjacent, and the folding member 61 is in the unfolded state, the universal wheel body 62 moves with the second connecting plate 612 to be adjacent to the first connecting plate 611 and located on the side of the support frame body. The second connecting plate 612 and the first connecting plate 611 are in contact with the ground, but the universal wheel body 62 is not in contact with the ground and cannot drive the support frame body to move.

[0070] It should be noted that the first connecting plate 611 is provided with a connecting buckle, and the second connecting plate 612 is provided with a connecting slot. The connecting buckle is adapted to the connecting slot, and the first connecting plate 611 and the second connecting plate 612 are detachably connected through the snap-fit ​​of the connecting buckle and the connecting slot. When the first connecting plate 611 and the second connecting plate 612 are arranged opposite each other, the connecting buckle and the connecting slot engage to fix the second connecting plate 612 and the first connecting plate 611, which helps to improve the movement stability of the foldable universal wheel 60; when the second connecting plate 612 needs to be rotated to be arranged side by side with the first connecting plate 611, the user releases the snap-fit ​​of the connecting buckle and the connecting slot.

[0071] In addition, the adjustable caster wheel 14 can also be a lockable caster wheel. When the lockable caster wheel moves the universal safety stool to the target position, the user can lock the lockable caster wheel. The lockable caster wheel cannot rotate, and thus cannot move the universal safety stool, which helps to improve the stability of the universal safety stool.

[0072] In some embodiments, the support frame body 13 includes a load-bearing part 131 and a connecting part 132 connected to each other. The connecting part 132 is connected to the foldable caster wheel 60 and the lifting frame 20, and the load-bearing part 131 is connected to the electric hydraulic lift 30.

[0073] Specifically, the connecting part 132 is provided with the horizontal connecting through hole 11 for the lifting ratchet 21 of the lifting frame 20 to pass through and connect with the lifting frame 20. The bearing part 131 is provided with the electric hydraulic lift 30 so that when the electric hydraulic lift 30 lifts the lifting frame 20 and the vehicle is lifted by the lifting frame 20, the bearing part 131 bears the reaction force of the vehicle applied to the electric hydraulic lift 30 by the lifting frame 20.

[0074] It should be noted that there are two connecting parts 132, which are located at both ends of the bearing part 131 respectively. The bottom of the connecting part 132 is connected to the foldable caster 60 to drive the support frame body 13 to move.

[0075] The following is a detailed description of the use of the universal safety stool:

[0076] First, switch the foldable caster wheel 60 to the folded state so that the foldable caster wheel 60 can move the universal safety seat to the target position (under the target vehicle);

[0077] Then, the foldable caster 60 is switched to the unfolded state so that the foldable caster 60 cannot move the universal safety stool, which helps to improve the stability of the universal safety stool.

[0078] Then, rotate the anti-fall mechanism 50 so that the anti-fall mechanism 50 engages with the lifting ratchet 21. At this time, the lifting frame 20 can only rise and cannot descend.

[0079] Finally, the electric hydraulic lift 30 is controlled to rise, thereby lifting the lifting plate 22 of the lifting frame 20 until the lifting plate 22 lifts the target vehicle to the corresponding height. The safety pin 41 is inserted into the connecting hole to lock the lifting ratchet 21, and the universal safety stool lifts the target vehicle.

[0080] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the scope of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this utility model as described above, which are not provided in the details for the sake of brevity.

[0081] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A universal safety stool, characterized by, include: Movable support frame; A lifting frame is vertically slidably connected to the movable support frame to lift and lower relative to the movable support frame. The side of the lifting frame away from the support frame is used to contact the vehicle to lift the vehicle. An electric hydraulic lift is located on the support frame, with its lifting end positioned below the lifting frame to lift the lifting frame; A locking mechanism is detachably connected to the movable support frame and the lifting frame to lock the vertical sliding connection between the lifting frame and the movable support frame. A fall arrestor is rotatably connected to the movable support frame to provide fall arrest protection for the lifting frame when rotated to connect with it.

2. The universal safety stool of claim 1, wherein, The lifting frame includes a lifting ratchet and a lifting plate connected together. The lifting plate is used to contact the vehicle. The lifting ratchet is vertically slidably connected to the movable support frame. The anti-fall mechanism and the locking mechanism are both connected to the lifting ratchet.

3. The universal safety stool of claim 2, wherein, The fall arrestor includes a pawl and a wrench connected together. The wrench is rotatably connected to the movable support frame. Under the rotation of the wrench, the pawl engages with or disengages from the lifting ratchet rack.

4. The universal safety bench of claim 3, wherein, The movable support frame is provided with a horizontal connecting through hole. The lifting ratchet passes through the horizontal connecting through hole and is vertically slidably connected to the movable support frame. The wrench is rotatably connected to the horizontal connecting through hole.

5. The universal safety bench of claim 4, wherein, The horizontal connecting through hole is provided with a connecting lug, and the wrench is rotatably connected to the connecting lug; the locking mechanism is detachably connected to the connecting lug.

6. The universal safety bench of claim 5, wherein, The locking mechanism includes a safety pin, and the connecting ears include a first ear and a second ear that are disposed opposite to each other. The first ear and the second ear are provided with connecting holes that are connected through each other. The safety pin passes through the connecting holes and is detachably connected to the movable support frame. The safety pin is located between two adjacent ratchet teeth on the lifting ratchet rack, and locks the lifting ratchet rack.

7. The universal safety stool according to claim 1, characterized in that, The movable support frame includes a support frame body connected to each other and adjustable casters, which are used to move or stop the support frame body.

8. The universal safety stool according to claim 7, characterized in that, The adjustable caster wheel is a foldable caster wheel, which includes a folding component and a caster wheel body connected together, and the folding component is connected to the support frame body; When the folding component is folded, the caster body is located at the bottom of the support frame body to drive the support frame body to move; when the folding component is unfolded, the caster body is located on the side of the support frame body, the folding component is in contact with the ground, and the support frame body stops moving.

9. The universal safety bench of claim 8, wherein, The folding component includes a first connecting plate and a second connecting plate that are rotatably connected. The first connecting plate is connected to the support frame body, and the second connecting plate is connected to the caster body. When the second connecting plate is rotated to be positioned opposite the first connecting plate, the omnidirectional wheel body is located at the bottom of the support frame body, and the folding member is folded; when the second connecting plate is rotated to be positioned side by side with the first connecting plate, the omnidirectional wheel body is located on the side of the support frame body, both the first connecting plate and the second connecting plate are in contact with the ground, and the folding member is unfolded.

10. The universal safety bench of claim 7, wherein, The main body of the support frame includes a load-bearing part and a connecting part connected to each other. The connecting part is connected to the foldable caster wheels and the lifting frame, and the load-bearing part is connected to the electric hydraulic lift.

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