Cantilever type guide rail lifting device based on elevator

Abstract

The invention discloses a cantilever type guide rail lifting device based on an elevator, relates to the technical field of lifting equipment, and solves the technical problems of low manual carrying efficiency, poor safety and insufficient equipment adaptability in the prior art, the cantilever type guide rail lifting device comprises a fixing frame, and limiting rods are fixedly connected to the right sides of the interiors of the front end and the rear end of the fixing frame; supporting frames are rotatably connected to the interiors of the front end and the rear end of the fixing frame through pin shafts, universal wheels are rotatably connected to the left sides and the right sides of the bottoms of the two supporting frames, a lifting mechanism is arranged in the center of the top of the fixing frame, and an adjusting mechanism is arranged on the right side of the fixing frame. Through cooperative work of the mechanisms, the modular design is clear, the lifting mechanism is responsible for precise lifting, the adjusting mechanism is responsible for position adjustment, and the functions of all the parts are complementary, so that the whole transfer process is efficient and orderly, the transfer of patients with mobility difficulties or without mobility ability can be rapidly and safely completed, and convenience is provided for medical care and family care.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, in particular to a cantilever guide rail lifting device for a hoist. Background Art

[0002] In medical care, home care and rehabilitation scenarios, for patients who have difficulty in moving or have completely lost the ability to move, such as those recovering from surgery and paralyzed patients, their daily transfer, such as from hospital beds to wheelchairs and from wheelchairs to nursing beds, is a high-frequency and difficult task.

[0003] Traditional transfer methods mainly rely on manual handling, which often requires the collaboration of 2-3 people. It not only consumes a lot of manpower, but also takes a long time to transfer. During manual handling, the uneven force on the patient's body can easily cause pain or secondary injuries. If the collaboration is improper, accidents such as falls may occur, posing a threat to the safety of both patients and caregivers. Although some electric transfer equipment can realize the lifting function, it lacks a convenient position adjustment mechanism, making it difficult to quickly move the equipment to the patient's side; and most equipment relies on external power supplies, which limits its applicability.

[0004] Therefore, in response to the problems of low manual handling efficiency, poor safety, and insufficient equipment adaptability in existing technologies, there is an urgent need for a patient transfer device that has flexible adjustment functions, is easy to operate, safe and stable, and can adapt to a variety of scenarios, so as to solve the transfer problems of patients with limited mobility, reduce the intensity of nursing, and improve the safety and convenience of the transfer process. Summary of the Invention

[0005] The object of the present invention is to provide a cantilever guide rail lifting device for a hoist to solve the following technical problems:

[0006] The existing technology has problems such as low manual handling efficiency, poor safety, and insufficient equipment adaptability.

[0007] The object of the present invention can be achieved by the following technical solution: a cantilever guide rail lifting device for a hoist, comprising a fixed frame, a limit rod fixed to the right side of the interior of the front end and the rear end of the fixed frame, the interior of the front end and the rear end of the fixed frame are both rotatably connected to a support frame through a pin shaft, the left and right sides of the bottoms of the two support frames are rotatably connected to universal wheels, a lifting mechanism is provided at the top center of the fixed frame, and an adjustment mechanism is provided on the right side of the fixed frame;

[0008] The lifting mechanism includes a base, a column is fixedly connected to the top center of the base, a control box is fixedly connected to the right side of the column near the middle section, a push handle is fixedly connected to the right middle section of the column, and a bottom plate is fixedly connected to the left inner bottom end of the column. The bottom of the bottom plate is threadedly connected to a servo motor through a flange, and the top of the bottom plate is rotatably connected to a screw. A cantilever lifting component is installed on the top of the outer wall of the column, and the base is threadedly connected to the top center of the fixed frame by bolts, and the output shaft at the top of the servo motor is locked with the bottom of the screw through a coupling.

[0009] As a further solution of the present invention, a battery is provided inside the control box and is connected to the servo motor via a connecting line.

[0010] As a further solution of the present invention, the cantilever lifting component includes a square tube, a threaded tube is fixedly connected to the left side of the interior of the square tube, a gusset plate is fixedly connected to the left side of the square tube, a groove tube is fixedly connected to the left side of the outer wall of the gusset plate, the interior of the gusset plate is slidingly connected to a beam rod, the top left side of the beam rod is rotatably connected to a hook rack, the top left side of the interior of the groove tube is fixedly connected to a fixed plate, the bottom of the fixed plate is fixedly connected to an extrusion spring, the bottom of the extrusion spring is fixedly connected to a slide plate, the bottom of the slide plate is fixedly connected to a plug rod, the bottom of the plug rod is fixedly connected to a top rod, the right bottom of the plug rod is fixedly connected to a block, the square tube is slidably connected to the outer wall of the column, and the threaded tube is threadedly connected to the outer wall of the screw.

[0011] As a further solution of the present invention, a limiting slide is provided on the top of the inner wall of the groove tube, and the slide plate is slidably connected to the inside of the limiting slide.

[0012] As a further solution of the present invention, a cavity is preset at the bottom right end of the inner wall of the groove tube, and an extrusion flange is processed at the top end of the cavity. The top right end of the plug rod is fitted together with the bottom left end of the extrusion flange.

[0013] As a further solution of the present invention, a plurality of slots are equidistantly formed on the left side of the outer wall of the beam, and the clamping blocks are clamped in the inside of the slots.

[0014] As a further solution of the present invention, the adjusting mechanism includes a support block, a transmission box is fixedly connected to the right side of the support block, a damping ring is fixedly connected to the right inside of the transmission box, the damping ring is rotatably connected to the first bevel gear, the outer wall of the first bevel gear is fixedly connected to the right side of the pedal, the inner top of the transmission box is rotatably connected to the second bevel gear, the bottom of the second bevel gear is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly connected to the first gear, the inner bottom end of the transmission box is rotatably connected to the third bevel gear, the bottom of the third bevel gear is fixedly connected to a sleeve, the bottom of the sleeve is fixedly connected to the second gear, the outer wall of the second gear is meshed with the first transmission rod on the right side, and the outer wall of the first gear is meshed with the second transmission rod on the right side, the support block is fixed to the right bottom of the column, and the front surface of the first transmission rod and the back of the second transmission rod are fixedly connected to the right sides of the two support frames.

[0015] As a further solution of the present invention, the connecting rod passes through the inner center of the third bevel gear, the sleeve and the second gear, and the top and bottom of the first bevel gear are respectively engaged and connected with the bottom right side of the second bevel gear and the top right side of the third bevel gear.

[0016] Beneficial effects of the present invention:

[0017] (1) The coordination of the servo motor and the lead screw in the lifting mechanism enables electric lifting and transfer of patients, eliminating the need for manual handling and significantly reducing the workload of nursing staff. At the same time, the height adjustment of the beam in the cantilever lifting component can be completed through the mechanical structure of the push rod, plug rod and block. The operation is simple and intuitive, and it can quickly adapt to patients of different sizes, thereby improving transfer efficiency.

[0018] (2) The adjustment mechanism can drive the gear transmission by stepping on the pedal, so that the two support frames expand outward. Combined with the universal wheels at the bottom, it is convenient to set up the device near the patient. Whether it is next to the bed or next to the wheelchair, it can be flexibly close to the patient, solving the problem that traditional transfer devices are difficult to approach the patient and expanding the scope of application of the device.

[0019] (3) The battery in the control box provides stable power for the servo motor, ensuring a smooth and reliable lifting process; the extrusion spring in the slot tube can stably clamp the block in the slot of the beam to prevent the beam from accidentally sliding during the transfer process; the limit rod on the fixed frame can limit the outward expansion stroke of the support frame to avoid excessive expansion of the support frame causing instability of the device, thus fully ensuring the safety of the patient during transfer.

[0020] (4) The various components of the device have clear division of labor. The fixed frame provides stable support for the whole, the support frame is responsible for movement and position adjustment, the lifting mechanism undertakes the core lifting and transfer functions, and the adjustment mechanism realizes the adjustment of the spacing between the support frames. Each part is precisely connected and coordinated through transmission, such as the transmission of the lead screw and the threaded tube, the meshing between the gears, etc., so that the entire device runs smoothly, improving the overall work efficiency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the connection structure of the cantilever guide rail lifting device for the hoist of the present invention;

[0022] Figure 2 This invention Figure 1 Another isometric diagram of the connection structure;

[0023] Figure 3 This invention Figure 1 Schematic diagram of the left-view connection structure;

[0024] Figure 4 This invention Figure 1 Schematic diagram of a locally enlarged connection structure;

[0025] Figure 5 This invention Figure 1 Schematic diagram of the connection structure of the middle cantilever lifting component;

[0026] Figure 6 This invention Figure 5 A schematic diagram of a front cross-sectional connection structure;

[0027] Figure 7 This invention Figure 6 Schematic diagram of the partially enlarged connection structure;

[0028] Figure 8 This invention Figure 1 A schematic diagram of the connection structure of the middle adjustment mechanism when viewed from above;

[0029] Figure 9 This invention Figure 8 Schematic diagram of the front cross-section connection structure.

[0030] Figure: 1, fixed frame; 2, limit rod; 3, support frame; 4, universal wheel; 5, lifting mechanism; 501, base; 502, column; 503, control box; 504, push handle; 505, bottom plate; 506, servo motor; 507, lead screw; 508, cantilever lifting member; 5081, square tube; 5082, threaded tube; 5083, gusset plate; 5084, grooved tube; 5085, beam; 5086, hook frame; 5087, fixed plate; 5088, extrusion Compression spring; 5089, slide plate; 50810, plug rod; 50811, push rod; 50812, clamping block; 6, adjustment mechanism; 601, support block; 602, transmission box; 603, damping ring; 604, first bevel gear; 605, pedal; 606, second bevel gear; 607, connecting rod; 608, first gear; 609, third bevel gear; 610, sleeve; 611, second gear; 612, first transmission rod; 613, second transmission rod. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] For example 1, please refer to Figure 1-Figure 7 The lifting device of the present invention is a cantilever guide rail lifting device based on a hoist, comprising a fixing frame 1, the fixing frame 1 is used to fix the lifting mechanism 5 and support the support frame 3 so that the support frame 3 can rotate inside the front and rear ends of the fixing frame 1, and a limit rod 2 is fixed to the internal right side of the front and rear ends of the fixing frame 1, and the limit rod 2 is used to limit the movement stroke of the two support frames 3 expanding outward. The front and rear ends of the fixing frame 1 are both rotatably connected to the support frame 3 by a pin shaft. The support frame 3 is used to support the fixing frame 1. The left and right sides of the bottom of the two support frames 3 are rotatably connected to universal wheels 4, and the universal wheels 4 are used to drive the support frame 3 to move. A lifting mechanism 5 is provided at the top center of the fixing frame 1. The lifting mechanism 5 is used to transfer patients with limited mobility or no mobility ability. An adjusting mechanism 6 is provided on the right side of the fixing frame 1. The adjusting mechanism 6 is used to adjust the distance between the two support frames 3 so that the two support frames 3 can expand outward, which is convenient for setting up the support frame 3 near the patient, thereby transferring the patient.

[0033] The lifting mechanism 5 includes a base 501, a column 502 is fixedly connected to the top center of the base 501, and the column 502 is used to support the cantilever lifting member 508 so that it can be lifted and lowered on the outer wall of the column 502. A control box 503 is fixedly connected to the right side of the column 502 near the middle section, and the control box 503 is used to control the servo motor 506 to work. A push handle 504 is fixedly connected to the middle section of the right side of the column 502, and the push handle 504 is used to push the column 502 to move as a whole. A bottom plate 505 is fixedly connected to the bottom end of the left inner part of the column 502, and the bottom plate 505 is used to support the servo motor 506 and the lead screw 507. The bottom of the base plate 505 is threadedly connected to a servo motor 506 through a flange, and the servo motor 506 is used to provide power to the screw 507, so that the screw 507 rotates, and the top of the base plate 505 is rotatably connected to the screw 507, and the screw 507 is used to drive the cantilever lifting component 508 to move as a whole. The top of the outer wall of the column 502 is installed with a cantilever lifting component 508, and the cantilever lifting component 508 is used to carry the patient. The base 501 is threadedly connected to the top center of the fixed frame 1 by bolts, and the output shaft at the top of the servo motor 506 is locked together with the bottom of the screw 507 through a coupling.

[0034] In this embodiment, preferably, a battery is provided inside the control box 503 and is connected to the servo motor 506 via a connecting line to drive the servo motor 506 to work.

[0035] In this embodiment, preferably, the cantilever lifting member 508 includes a square tube 5081, which is used to fix the threaded tube 5082 and limit the movement trajectory of the threaded tube 5082 so that the threaded tube 5082 can maintain vertical movement. The left side of the inner side of the square tube 5081 is fixed with a threaded tube 5082, which is used to drive the square tube 5081 to move. The left side of the square tube 5081 is fixed with a gusset plate 5083, which is used to fix the beam 5 085 is buckled, so that the beam rod 5085 can slide up and down inside the right side of the gusset plate 5083. The outer wall of the gusset plate 5083 is fixed with a groove tube 5084 on the left side. The gusset plate 5083 is internally slidably connected to the beam rod 5085. The beam rod 5085 is used to support the hook rack 5086. The top left side of the beam rod 5085 is rotatably connected to the hook rack 5086. The hook rack 5086 is used to hang a net bag or a strap, so that the patient can be transferred through the cantilever lifting device. A fixing plate 5087 is fixed to the top left side of the inner portion of the groove tube 5084. The fixing plate 5087 is used to fix the extrusion spring 5088. The bottom of the fixing plate 5087 is fixed to the extrusion spring 5088. The extrusion spring 5088 is used to squeeze the slide plate 5089. The bottom of the extrusion spring 5088 is fixed to the slide plate 5089. The slide plate 5089 is used to support the plug rod 50810. The bottom of the slide plate 5089 is fixed to the plug rod 50810. The plug rod 50810 is fixed to the bottom of the slide plate It is used to support the blocking block 50812 and can drive the blocking block 50812 to move. The bottom of the plug rod 50810 is fixed with a push rod 50811, and the push rod 50811 is used to drive the plug rod 50810 to move. The right bottom of the plug rod 50810 is fixed with a blocking block 50812, and the blocking block 50812 is used to clamp the beam rod 5085. The square tube 5081 is slidably connected to the outer wall of the column 502, and the threaded tube 5082 is threadedly connected to the outer wall of the screw 507.

[0036] In this embodiment, preferably, a limiting slide is opened at the top of the inner wall of the groove tube 5084, and the slide plate 5089 is slidably connected to the inside of the limiting slide. The limiting slide opened at the top of the inner wall can limit the movement trajectory and movement stroke of the slide plate 5089.

[0037] In this embodiment, preferably, a cavity is preset at the bottom right end of the inner wall of the groove tube 5084, and an extrusion flange is processed at the top end of the cavity. The top right end of the plug rod 50810 is fitted together with the left bottom end of the extrusion flange. The cavity can reserve movement space on the right side of the plug rod 50810. When the plug rod 50810 slides upward, the extrusion flange will squeeze the right side of the plug rod 50810, thereby causing the right side of the plug rod 50810 to shrink into the interior of the groove tube 5084, thereby causing the clamping block 50812 to cancel the clamping connection with the clamping slot.

[0038] In this embodiment, preferably, a plurality of slots are equidistantly provided on the left side of the outer wall of the beam rod 5085 , and the clamping block 50812 is clamped inside the slot, thereby clamping the beam rod 5085 .

[0039] In summary, when the lifting mechanism 5 is transporting a patient, the top of the strap or net bag is first hung on the front and rear sections of the hook frame 5086 in the cantilever lifting component 508. After the strap or net bag is fixed, the servo motor 506 is controlled by the control box 503 to start working. The servo motor 506 provides power to the lead screw 507, so that the lead screw 507 can rotate inside the column 502. When the lead screw 507 rotates, it can drive the threaded tube 5082 threadedly connected to its outer wall to move, thereby driving the cantilever lifting component 508 to rise as a whole through the threaded tube 5082, so as to transport the patient. When it is necessary to adjust the support height of the beam 5085, the push rod 50811 is pushed upward, and the push rod 50811 can drive the plug rod 50810 to slide upward. This enables the plug rod 50810 to slide to the top end of the groove tube 5084, and the right side of the plug rod 50810 to retract into the interior of the groove tube 5084, thereby canceling the clamping of the block 50812 on the beam rod 5085, allowing the beam rod 5085 to slide up and down inside the buckle plate 5083, thereby adjusting the support height of the beam rod 5085. After adjustment, the top rod 50811 is released, and the extrusion spring 5088 can be used to reset the plug rod 50810, so that the clamping block 50812 is re-clamped to the inside of the clamping groove opened on the left side of the beam rod 5085, thereby re-clamping the beam rod 5085 and completing the support height adjustment of the beam rod 5085, which can adapt to patients of different body shapes, facilitate the transfer of patients, and improve its flexibility of use.

[0040] For example 2, please refer to Figure 1 、 Figure 8 and Figure 9As shown, on the basis of embodiment 1, the adjustment mechanism 6 includes a support block 601, the support block 601 is used to fix the transmission box 602, the right side of the support block 601 is fixed with the transmission box 602, the transmission box 602 is used to support the damping ring 603, the first bevel gear 604, the second bevel gear 606 and the third bevel gear 609, the right side of the transmission box 602 is fixed with a damping ring 603, the damping ring 603 is used to install the first bevel gear 604, so that the first bevel gear 604 can be fixed on the damping ring The internal rotation of the damping ring 603 is connected to the first bevel gear 604, and the first bevel gear 604 is used to drive the second bevel gear 606 and the third bevel gear 609 to rotate. The right side of the outer wall of the first bevel gear 604 is fixed with a pedal 605, and the pedal 605 is used to drive the first bevel gear 604 to rotate. The top of the internal rotation of the transmission box 602 is connected to the second bevel gear 606, and the second bevel gear 606 is used to drive the connecting rod 607 to rotate. The bottom of the second bevel gear 606 The bottom of the transmission box 602 is fixed with a connecting rod 607, which is used to drive the first gear 608 to rotate. The bottom of the connecting rod 607 is fixed with a first gear 608, which is used to drive the second transmission rod 613 to move. The bottom end of the transmission box 602 is rotatably connected to a third bevel gear 609, which is used to drive the sleeve 610 to rotate. The bottom of the third bevel gear 609 is fixed with a sleeve 610, which is used to drive the second gear 611 to rotate. The bottom of the sleeve 610 is fixed with The second gear 611, the second gear 611 is used to drive the first transmission rod 612 to move, the right side of the outer wall of the second gear 611 is meshed with the first transmission rod 612, the right side of the outer wall of the first gear 608 is meshed with the second transmission rod 613, the first transmission rod 612 and the second transmission rod 613 are used to drive the right side of the support frame 3 to move, the support block 601 is fixed to the right bottom of the column 502, the front surface of the first transmission rod 612 and the back of the second transmission rod 613 are fixedly connected to the right sides of the two support frames 3.

[0041] In this embodiment, preferably, the connecting rod 607 passes through the inner center of the third bevel gear 609, the sleeve 610 and the second gear 611, and the top and bottom of the first bevel gear 604 are respectively engaged with the bottom right side of the second bevel gear 606 and the top right side of the third bevel gear 609.

[0042] In summary, when the patient needs to be transferred, in order to more conveniently move the support frame 3 to the vicinity of the patient, after the support frame 3 is moved to the vicinity of the patient, the pedal 605 in the adjustment mechanism 6 is stepped on downward. In the process of stepping on the pedal 605, the first bevel gear 604 will be driven to rotate. In the process of rotating the first bevel gear 604, the second bevel gear 606 and the third bevel gear 609 will be synchronously driven to rotate in opposite directions. While the second bevel gear 606 and the third bevel gear 609 are rotating, the first gear 608 and the second gear 611 will be driven to rotate through the connecting rod 607 and the sleeve 610 respectively, thereby driving the first transmission rod 612 and the second transmission rod 613 to rotate in opposite directions through the first gear 608 and the second gear 611, so that the two support frames 3 are opened outward, making it easier to set up the support frame 3 near the patient. After fixing the patient, the other end of the pedal 605 that is tilted after stepping on is stepped on downward, so that the support frame 3 can be reset.

[0043] For example three, please refer to Figures 1-9 As shown, the present embodiment combines the first and second embodiments to achieve the safe and convenient transfer of patients with limited or no mobility through the coordinated operation of various components. The position of the support frame 3 is adjusted to be closer to the patient by means of the adjustment mechanism 6. When the pedal 605 of the adjustment mechanism 6 is stepped on, it drives the first bevel gear 604 in the transmission box 602 to rotate, which simultaneously drives the second bevel gear 606 and the third bevel gear 609 meshing with it to rotate in the opposite direction. The second bevel gear 606 drives the first gear 608 to rotate via the connecting rod 607, and the third bevel gear 609 drives the second gear 611 to rotate via the sleeve 610. The first gear 608 and the second gear 611 then drive the first transmission rod 612 and the second transmission rod 613 in opposite directions, respectively, causing the two support frames 3 to expand outward. At this point, the device can be easily moved to the vicinity of the patient using the universal wheels 4 at the bottom of the support frame 3. Afterwards, the support frame 3 can be reset and fixed by stepping on the pedal 605 in the opposite direction.

[0044] The patient is transferred through the lifting mechanism 5. First, the net bag or strap is hung on the hook frame 5086 of the cantilever lifting component 508, and then the control box 503 is operated to start the servo motor 506. The servo motor 506 drives the screw 507 to rotate through the coupling. The threaded tube 5082 threadedly connected to the screw 507 will drive the square tube 5081 to rise and fall along the outer wall of the column 502, thereby realizing the overall lifting of the cantilever lifting component 508 and lifting the patient steadily. If the height needs to be adjusted according to the patient's body shape, the push rod 50811 is pushed upward. The push rod 50811 drives the plug rod 50810 to move upward. The right side of the plug rod 50810 is squeezed and contracted by the extrusion flange in the groove tube 5084, so that the block 50812 is disengaged from the groove of the beam rod 5085. At this time, the beam rod 5085 can be slid to a suitable height. After releasing the top rod 50811, the extrusion spring 5088 pushes the slide plate 5089 downward, the plug rod 50810 is reset, and the block 50812 is re-engaged in the slot to fix the beam rod 5085, completing the height adjustment and ensuring stable adaptation during the patient transfer process.

[0045] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A cantilever guide rail lifting device for a hoist, comprising a fixed frame, wherein the right side of the front and rear ends of the fixed frame are fixedly connected to a limit rod, the front and rear ends of the fixed frame are both rotatably connected to a support frame via a pin, and the bottom left and right sides of the two support frames are rotatably connected to universal wheels, characterized in that: A lifting mechanism is provided at the top center of the fixing frame, and an adjusting mechanism is provided on the right side of the fixing frame; The lifting mechanism includes a base, a column is fixedly connected to the top center of the base, a control box is fixedly connected to the right side of the column near the middle section, a push handle is fixedly connected to the right middle section of the column, and a bottom plate is fixedly connected to the left inner bottom end of the column. The bottom of the bottom plate is threadedly connected to a servo motor through a flange, and the top of the bottom plate is rotatably connected to a screw. A cantilever lifting component is installed on the top of the outer wall of the column, and the base is threadedly connected to the top center of the fixed frame by bolts, and the output shaft at the top of the servo motor is locked with the bottom of the screw through a coupling.

2. The cantilever guide rail lifting device for a hoist according to claim 1, characterized in that: A battery is arranged inside the control box and is connected to the servo motor through a connecting line.

3. The cantilever guide rail lifting device for a hoist according to claim 1, characterized in that: The cantilever lifting component includes a square tube, a threaded tube is fixedly connected to the left side of the interior of the square tube, a gusset plate is fixedly connected to the left side of the square tube, a groove tube is fixedly connected to the left side of the outer wall of the gusset plate, the interior of the gusset plate is slidably connected to a beam rod, the top left side of the beam rod is rotatably connected to a hook rack, the top left side of the interior of the groove tube is fixedly connected to a fixed plate, the bottom of the fixed plate is fixedly connected to an extrusion spring, the bottom of the extrusion spring is fixedly connected to a slide plate, the bottom of the slide plate is fixedly connected to a plug rod, the bottom of the plug rod is fixedly connected to a top rod, the right bottom of the plug rod is fixedly connected to a block, the square tube is slidably connected to the outer wall of the column, and the threaded tube is threadedly connected to the outer wall of the lead screw.

4. The cantilever guide rail lifting device for a hoist according to claim 3, characterized in that: A limiting slideway is provided on the top of the inner wall of the groove tube, and the slide plate is slidably connected to the inside of the limiting slideway.

5. The cantilever guide rail lifting device for a hoist according to claim 3, characterized in that: A cavity is preset at the bottom right end of the inner wall of the groove tube, and an extrusion flange is processed at the top end of the cavity. The top right end of the plug rod is fitted together with the bottom left side of the extrusion flange.

6. The cantilever guide rail lifting device for a hoist according to claim 3, characterized in that: A plurality of slots are equidistantly provided on the left side of the outer wall of the beam, and the clamping blocks are clamped in the inner parts of the slots.

7. The cantilever guide rail lifting device for a hoist according to claim 1, characterized in that: The adjusting mechanism includes a support block, the right side of the support block is fixedly connected to a transmission box, the right inside of the transmission box is fixedly connected to a damping ring, the inside of the damping ring is rotatably connected to the first bevel gear, the right side of the outer wall of the first bevel gear is fixedly connected to a pedal, the inner top end of the transmission box is rotatably connected to the second bevel gear, the bottom of the second bevel gear is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly connected to the first gear, the inner bottom end of the transmission box is rotatably connected to the third bevel gear, the bottom of the third bevel gear is fixedly connected to a sleeve, the bottom of the sleeve is fixedly connected to the second gear, the right side of the outer wall of the second gear is meshed with the first transmission rod, the right side of the outer wall of the first gear is meshed with the second transmission rod, the support block is fixed to the right bottom of the column, the front surface of the first transmission rod and the back of the second transmission rod are fixedly connected to the right sides of the two support frames.

8. The cantilever guide rail lifting device for a hoist according to claim 7, characterized in that: The connecting rod passes through the inner center of the third bevel gear, the sleeve and the second gear. The top and bottom of the first bevel gear are respectively engaged with the bottom right side of the second bevel gear and the top right side of the third bevel gear.

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