Scissor fork lifting platform

Abstract

The utility model discloses a scissor-fork lifting platform, which belongs to the technical field of lifting platforms and is characterized in that a base is connected with an upper frame through a scissor-fork group, the middle of an eccentric winding drum is rotatably mounted on the base, one end of the eccentric winding drum is hinged with a connecting rod, and the other end of the connecting rod is hinged with the scissor-fork group; a belt clamping device used for fixing one end of a belt is arranged in the eccentric winding drum, and the other end of the belt bypasses a guide pipe at the other end of the eccentric winding drum to be connected with a belt winding drum power mechanism. The scissor fork lifting platform is scientific and reasonable in structural design and easy and convenient to operate. Lifting is achieved through the scissor fork set, the structure is compact, and the space utilization rate is high. And the limit switch performs limit protection to guarantee equipment safety. The belt clamping device ensures stable transmission of the belt, the guide roller and the guide pipe guide the belt, and the transmission stability is improved. The supporting columns and the buffering rubber parts can prevent the frame from being collided and damaged, labor intensity is integrally and effectively reduced, the goods lifting and stacking efficiency is improved, and production and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of lifting platform technology, and in particular to a scissor lift platform. Background Technology

[0002] In the traditional conveying industry, lifting and lowering goods is an essential part of conveying tasks. Traditional lifting methods involve manually operating forklifts to stack goods from the ground up, which is inefficient. If overhead conveyor systems are used for lifting operations, not only are they costly, but they also have strict site requirements, as small spaces are not suitable for installation. Utility Model Content

[0003] Purpose of the utility model: To provide a scissor lift platform to solve the above-mentioned problems existing in the prior art.

[0004] Technical solution: A scissor lift platform includes a base, which is connected to an upper frame via a scissor fork assembly. An eccentric drum is rotatably mounted on the base, with one end of the eccentric drum hinged to a connecting rod and the other end of the connecting rod hinged to the scissor fork assembly. A belt drum power mechanism is provided on the base, and a belt clamping device for fixing one end of the belt is provided inside the eccentric drum. The other end of the belt passes around a guide tube at the other end of the eccentric drum and is connected to the belt drum power mechanism.

[0005] Furthermore, the scissor fork assembly includes: an inner scissor frame, which is hinged to the outer scissor frame at the middle; one end of the inner scissor frame is hinged to the lower fixed seat of the base; the other end of the inner scissor frame is mounted on the inner slide rail within the upper frame via an inner roller; one end of the outer scissor frame is hinged to the upper fixed seat on the upper frame; the other end of the outer scissor frame is mounted on the outer slide rail of the base via an outer roller and is connected to the moving end of a linear displacement sensor disposed on the base.

[0006] Furthermore, the belt clamping device includes: a fixed crossbeam, both ends of which are installed inside the eccentric drum, at least one locking bolt is provided on the fixed crossbeam, a locking base plate is provided at the lower end of the locking bolt, a through hole is provided on the locking base plate, an auxiliary wheel is rotatably installed in the through hole, and one end of the belt passes around the auxiliary wheel and is fixed on the locking base plate by a clamping plate.

[0007] Furthermore, the belt clamping device includes: a fixed crossbeam, both ends of which are installed inside the eccentric drum, at least one locking bolt is provided on the fixed crossbeam, a locking base plate is provided at the lower end of the locking bolt, and one end of the belt is fixed on the locking base plate by a clamp.

[0008] Furthermore, the belt drum power mechanism includes: at least one drive motor, the output end of which is connected to a drum, and the other end of the belt is fixedly connected to the drum.

[0009] Furthermore, the base is equipped with a limit switch for measuring the position of the belt.

[0010] Furthermore, a guide roller for driving the belt to change direction is rotatably mounted on the base.

[0011] Furthermore, the base is provided with multiple support columns for supporting the lowest position of the upper frame.

[0012] Furthermore, a buffer rubber section is provided at the upper end of the support column.

[0013] Furthermore, the base is provided with anti-slip rubber pads or waist-shaped mounting holes for fixing.

[0014] Beneficial effects:

[0015] This scissor lift platform features a scientifically designed and user-friendly structure. Lifting is achieved through a scissor fork assembly, resulting in a compact structure and high space utilization. Limit switches provide protection against potential hazards, ensuring equipment safety. A belt clamping device ensures stable belt transmission, while guide rollers and guide tubes guide the belt, enhancing transmission stability. Support columns and cushioning rubber sections prevent frame collision damage. Overall, this design effectively reduces labor intensity, improves cargo lifting and stacking efficiency, and lowers production and maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a perspective view of the present invention;

[0018] Figure 3 This is a utility model Figure 2 A magnified view of part A in the image;

[0019] Figure 4 This is a schematic diagram of the installation position of the inner roller of this utility model;

[0020] Figure 5 This is a schematic diagram of the installation position of the outer roller of this utility model;

[0021] Figure 6 This is a schematic diagram of the eccentric drum structure of this utility model. Detailed Implementation

[0022] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0023] Example: Figure 1 - Figure 6As shown, a scissor lift platform includes a base 1, which is connected to an upper frame 2 via a scissor fork assembly 3. An eccentric drum 4 is rotatably mounted on the base 1 at its center. One end of the eccentric drum 4 is hinged to a connecting rod 13, and the other end of the connecting rod 13 is hinged to the scissor fork assembly 3. A belt drum power mechanism 5 is provided on the base 1. A belt clamping device 7 for fixing one end of a belt 6 is provided inside the eccentric drum 4. The other end of the belt 6 passes around a guide tube 8 at the other end of the eccentric drum 4 and is connected to the belt drum power mechanism 5. The scissor fork assembly 3 includes: an inner scissor frame 31, which is hinged to the outer scissor frame 32 at the middle. One end of the inner scissor frame 31 is hinged to the lower fixed seat 33 of the base 1, and the other end of the inner scissor frame 31 is mounted on the inner slide rail 35 in the upper frame 2 via an inner roller 34. One end of the outer scissor frame 32 is hinged to the upper fixed seat 36 on the upper frame 2, and the other end of the outer scissor frame 32 is mounted on the outer slide rail 39 of the base 1 via an outer roller 38 and is connected to the moving end of the linear displacement sensor 37 disposed on the base 1. The belt clamping device 7 includes: a fixed crossbeam 71, both ends of which are installed inside the eccentric drum 4; at least one locking bolt 72 is provided on the fixed crossbeam 71; a locking base plate 73 is provided at the lower end of the locking bolt 72; a through-hole 74 is provided on the locking base plate 73; an auxiliary wheel 75 is rotatably installed in the through-hole 74; one end of the belt 6 passes around the auxiliary wheel 75 and is fixed to the locking base plate 73 by a clamping plate 76. The belt drum power mechanism 5 includes: at least one drive motor 51; the output end of the drive motor 51 is connected to the drum 52; and the other end of the belt 6 is fixedly connected to the drum 52. The base 1 is equipped with a limit switch 9 for measuring the position of the belt 6. A guide roller 10 is rotatably mounted on the base 1 to drive the belt 6 to change direction. The base 1 is equipped with multiple support columns 11 for supporting the lowest position of the upper frame 2. Each support column 11 has a cushioning rubber section 12 at its upper end. The base 1 is equipped with anti-slip rubber pads or waist-shaped mounting holes for fixing.

[0024] The base 1 is the fundamental support component of the entire scissor lift platform, typically made of metal, possessing a certain strength and stability. In practical applications, it may be made of cast steel or high-strength aluminum alloy to meet different load-bearing requirements. Its shape and size are customized according to the lift platform's design load capacity, operating environment, and compatibility requirements with other equipment; common shapes include rectangular and square. In some large-scale logistics conveying scenarios, the base may be designed to be wider to increase stability and load-bearing area; while in spaces with limited capacity, the base will be designed to be relatively compact. Its main function is to provide a stable support foundation for the entire lift platform, ensuring that the entire device does not shake or tip over during the lifting of goods. The base 1 is equipped with several key installation structures, such as the rotating support structure for mounting the eccentric drum 4, the fixed position of the belt drum power mechanism 5, the rotating mounting position of the guide roller 10, and the fixing point of the support column 12. The precise layout and design of these structures enable the various components to work together, ensuring the normal operation of the lift platform. The anti-slip rubber pads or waist-shaped mounting holes on base 1 further enhance its stability and installation flexibility. The anti-slip rubber pads increase friction between the base and the ground, preventing the lifting platform from sliding during lifting, especially suitable for work environments with slippery surfaces. The waist-shaped mounting holes allow users to flexibly adjust the installation position of the lifting platform according to the actual site conditions, securing it to the ground with bolts and other connectors to ensure the stability of the lifting platform during use and avoid safety accidents caused by insecure installation. The upper frame 2, also made of metal, corresponds to base 1 and is a crucial component for carrying goods. Its structural design needs to consider the placement method and size of the goods, as well as the docking requirements with other conveying equipment. Generally, the shape of the upper frame 2 matches that of base 1 to ensure the structural symmetry and stability of the entire lifting platform. On some logistics conveyor lines, the upper frame 2 may be designed with specific cargo positioning structures, such as slots or blocks, to facilitate accurate placement and transport of goods. Its material selection is similar to that of base 1, requiring sufficient strength and rigidity to withstand the weight of the goods and the impact forces during lifting. The main function of the upper frame 2 is to support goods and provide a support platform for lifting and lowering them. It is connected to the base 1 via a scissor fork assembly 3. During lifting, the upper frame 2 can rise and fall smoothly as the scissor fork assembly 3 expands and contracts. An inner slide rail 35 within the upper frame 2 provides a sliding track for one end of the inner scissor frame 31, ensuring the inner scissor frame 31 maintains a stable trajectory during movement, thus guaranteeing smooth and reliable lifting of the entire lifting platform. Furthermore, the design of the upper frame 2 must consider compatibility with surrounding equipment. For example, when connecting with other conveyor lines, the height, dimensions, and interface type of the upper frame 2 must seamlessly integrate with other equipment to ensure smooth flow of goods between different devices and improve the efficiency of logistics transportation.The scissor fork assembly 3 is the core component for achieving the lifting function, consisting of an inner scissor frame 31 and an outer scissor frame 32. The inner scissor frame 31 and the outer scissor frame 32 are typically made of high-strength steel, possessing excellent rigidity and toughness. They are generally slender rod-like structures, connected to each other via hinge points, forming a scissor fork-like shape. The number and size of the inner scissor frame 31 and the outer scissor frame 32 are designed according to the lifting platform's load-bearing capacity and lifting height requirements. In some small lifting platforms, only one scissor fork assembly may be needed; while in large logistics conveying lifting platforms, multiple scissor fork assemblies may be required to work together to improve load-bearing capacity and lifting stability. The main function of the scissor fork assembly 3 is to achieve the lifting movement of the upper frame 2 through its own expansion and contraction. When the belt drum power mechanism 5 drives the belt 6, the eccentric drum 4 rotates accordingly, thereby causing the scissor fork assembly 3 to expand or contract. The hinged structure between the inner scissor frame 31 and the outer scissor frame 32, and their connection to the base 1 and the upper frame 2, allows the scissor fork assembly 3 to evenly distribute the weight of the goods during lifting, ensuring the stability of the lifting platform. Simultaneously, the design of the scissor fork assembly 3 effectively saves space; it can be retracted when not in use, reducing space occupation and improving space utilization, which is particularly important in space-constrained logistics warehouses or production workshops. The eccentric drum 4 is a component with a special structure. Its middle part is rotatably mounted on the base 1, using a shaft and bearing combination to ensure flexible rotation. One end of the eccentric drum 4 is hinged to the scissor fork assembly 3, and the other end is equipped with a guide tube 8 to guide the movement direction of the belt 6. An internal belt clamping device 7 is provided to fix one end of the belt 6. The eccentric structure design of the eccentric drum 4 is its key feature. This structure allows different lever arms to be generated when the drum rotates, thereby achieving effective drive of the scissor fork assembly 3. The eccentric drum 4 is typically made of high-strength alloy steel and undergoes special processing to ensure sufficient strength and wear resistance to withstand frequent rotation and heavy loads. The eccentric drum 4 plays a crucial transmission role in the entire lifting system. When the belt drum power mechanism 5 drives the belt 6, the tension of the belt 6 acts on the eccentric drum 4, causing it to rotate. Due to the eccentric structure, the eccentric drum 4, during rotation, drives the hinged scissor fork assembly 3 to unfold or retract, thereby achieving the lifting and lowering of the upper frame 2. The belt clamping device 7 inside the eccentric drum 4 firmly secures one end of the belt 6, ensuring that the belt 6 will not loosen or fall off during transmission, thus guaranteeing the reliability of the transmission. Simultaneously, the guide tube 8 on the eccentric drum 4 guides the direction of movement of the belt 6, keeping it stable during movement and preventing belt deviation, thereby improving the stability and reliability of the entire transmission system. The belt drum power mechanism 5 mainly consists of at least one drive motor 51 and a drum 52.The drive motor 51 is typically selected from motors with high torque and speed stability, such as AC servo motors or DC motors, to meet the different working requirements of the lifting platform. The motor power is selected based on factors such as the lifting platform's load capacity, lifting speed, and working environment. The drum 52 is connected to the output end of the drive motor 51, generally using a key connection or coupling connection to ensure reliable power transmission between the two. The surface of the drum 52 is specially treated to increase the friction between it and the belt 6, preventing the belt 6 from slipping on the drum. The main function of the belt drum power mechanism 5 is to provide power to the entire lifting system. After the drive motor 51 is powered on, it drives the drum 52 to rotate through the output shaft. The rotation of the drum 52 causes the belt 6 wound on it to move. When the drum 52 rotates forward, the belt 6 is tightened, thereby pulling the eccentric drum 4 to rotate, realizing the rise of the upper frame 2; when the drum 52 rotates in reverse, the belt 6 is loosened, and the upper frame 2 descends under the weight of the goods and the action of the scissor fork assembly 3. By controlling the speed and direction of the drive motor 51, the lifting speed and position of the upper frame 2 can be precisely controlled to meet the lifting needs of different goods. Furthermore, the drive motor 51 can be connected to the control system to achieve automated control, improving the ease of operation and work efficiency of the lifting platform. The belt 6 is a crucial transmission component connecting the belt reel power mechanism 5 and the eccentric drum 4. It is typically made of high-strength rubber or polyurethane material, containing reinforcing fibers such as steel wire rope or polyester fiber to enhance its strength and wear resistance. The width and length of the belt 6 are selected according to the design requirements of the lifting platform. The width needs to be sufficient to transmit power while matching the dimensions of the drum 52 and the eccentric drum 4; the length needs to be precisely calculated based on the maximum lifting height of the lifting platform and the layout of each component. The surface of the belt 6 is generally designed with special patterns or teeth to increase friction with the drum and eccentric drum, preventing slippage. The belt 6 plays a key role in transmitting power throughout the entire lifting system. It transmits the power generated by the belt drum power mechanism 5 to the eccentric drum 4. Through the tensioning and loosening of the belt, the eccentric drum 4 rotates, thereby enabling the scissor fork assembly 3 to unfold and retract, ultimately raising and lowering the upper frame 2. The high strength and wear resistance of the belt 6 ensure stable power transmission during long-term use, reducing equipment malfunctions caused by belt damage. Simultaneously, its special surface design effectively increases friction between the belt and the drum and eccentric drum, ensuring that the belt 6 does not slip during transmission, improving transmission efficiency and reliability. The belt clamping device 7 is installed inside the eccentric drum 4 and mainly consists of a fixed crossbeam 71, locking bolts 72, locking base plate 73, through-hole 74, auxiliary wheel 75, and clamping plate 76. The fixed crossbeam 71 is installed at both ends inside the eccentric drum 4, serving to support and fix other components. The locking bolts 72 are installed on the fixed crossbeam 71; by rotating the locking bolts 72, the position of the locking base plate 73 can be adjusted.A through-hole 74 is provided on the locking base plate 73. An auxiliary wheel 75 is rotatably installed in the through-hole 74. One end of the belt 6 passes over the auxiliary wheel 75 and is fixed to the locking base plate 73 by the clamp 76. This structural design ensures that the belt 6 is evenly stressed when fixed and facilitates adjustment of the belt tension. The main function of the belt clamping device 7 is to firmly fix one end of the belt 6, preventing it from loosening or falling off on the eccentric drum 4. By rotating the locking bolt 72, the position of the locking base plate 73 can be adjusted, thereby changing the belt tension and ensuring that the belt 6 is always in a suitable tension state during transmission. The auxiliary wheel 75 reduces friction of the belt 6 at the fixing point, extends the service life of the belt 6, and also helps the belt 6 maintain smoothness during movement. The clamp 76 firmly fixes the belt 6 to the locking base plate 73, ensuring that the belt 6 will not shift or slip when transmitting power, thus improving the reliability of the transmission. The guide tube 8 is installed at the other end of the eccentric drum 4 and is usually made of metal materials, such as steel pipe or aluminum alloy pipe. Its shape is tubular with a smooth interior to reduce frictional resistance when the belt 6 passes through. The diameter of the guide tube 8 needs to match the size of the belt 6 to ensure that the belt 6 can slide smoothly within the guide tube 8. The installation position and angle of the guide tube 8 need to be precisely designed according to the layout of the entire lifting system to ensure that the belt 6 can move along a predetermined trajectory during operation. The main function of the guide tube 8 is to guide the movement direction of the belt 6, keeping the belt 6 stable during its movement from the eccentric drum 4 to the belt drum power mechanism 5, and preventing problems such as belt 6 running off course or twisting. By precisely guiding the movement direction of the belt 6, the stability and reliability of the entire transmission system are ensured, reducing equipment failures caused by abnormal belt 6 movement. At the same time, the smooth inner wall of the guide tube 8 can reduce friction between the belt 6 and the guide tube 8, reducing energy loss and extending the service life of the belt 6. The limit switch 9 is mounted on the base 1 and is used to measure the position of the belt 6. It usually adopts the type of proximity sensor or micro switch, which has the characteristics of high sensitivity and fast response speed. The housing of the limit switch 9 is generally made of plastic or metal materials to adapt to different working environments. Its internal sensing element can generate corresponding electrical signals based on the position change of the belt 6. These electrical signals can be transmitted to the control system to control the operation of the drive motor 51. The main function of the limit switch 9 is to limit the movement of the lifting platform and prevent the upper frame 2 from rising or falling excessively, which could lead to equipment damage or safety accidents. When the belt 6 moves to the set limit position, the limit switch 9 will detect the position change of the belt 6 and transmit the signal to the control system. The control system will immediately control the drive motor 51 to stop running, thereby stopping the upper frame 2 from rising or falling.For example, when the upper frame 2 rises to its highest position, the limit switch 9 will be triggered in time to prevent it from continuing to rise and colliding with other objects; when the upper frame 2 descends to its lowest position, the limit switch 9 will also function to prevent the upper frame 2 from descending excessively and damaging the scissor fork assembly 3 or other components. This limit protection mechanism effectively improves the safety and reliability of the lifting platform. The guide rollers 10 are rotatably mounted on the base 1 and are typically composed of rollers and bearings. The rollers are generally made of metal with a smooth surface to reduce frictional resistance when the belt 6 contacts the ground. Bearings are installed at both ends of the rollers, allowing them to rotate flexibly. The number and installation position of the guide rollers 10 are designed according to the movement trajectory of the belt 6 and the layout of the entire lifting system, and are generally placed where the belt 6 needs to change direction. The main function of the guide rollers 10 is to change the movement direction of the belt 6, enabling it to move along a predetermined path throughout the transmission system. Guided by the guide rollers 10, the belt 6 can transmit power more smoothly between various components, preventing excessive bending or uneven friction of the belt 6. Meanwhile, the rotation of the guide roller 10 reduces friction between the belt 6 and other components, lowers energy loss, and extends the service life of the belt 6. In some complex lifting systems, a reasonable layout of the guide roller 10 can also improve the compactness and space utilization of the entire system. Support columns 11 are installed on the base 1, typically in multiples, evenly distributed around the base 1 or at specific locations. The support columns 11 are usually made of metal materials, such as steel pipes or cylindrical steel, possessing sufficient strength and rigidity. The height of the support columns 11 is designed according to the minimum position requirements of the upper frame 2, and a buffer rubber part 12 is provided at its upper end. The buffer rubber part 12 is generally made of rubber material, possessing good elasticity and cushioning performance. The main function of the support columns 11 is to support the upper frame 2 when it descends to its lowest position, preventing the upper frame 2 from directly colliding with the base 1 and protecting both the upper frame 2 and the base 1 from damage. The even distribution of multiple support columns 11 ensures that the upper frame 2 is subjected to uniform force at its lowest position, improving the stability of the entire lifting platform. The buffer rubber part 12 can further buffer the impact force when the upper frame 2 descends, reduce the noise and vibration caused by the collision, and at the same time protect the bottom of the upper frame 2 from wear and extend the service life of the equipment.

[0025] Work process

[0026] When it is necessary to lift goods, the operator first places the goods steadily on the upper frame 2 to ensure that they meet the load-bearing requirements. Then, the drive motor 51 in the belt drum power mechanism 5 is started. The drive motor 51 is powered on and runs, driving the drum 52 connected to the output shaft to rotate in the forward direction.

[0027] As the drum 52 rotates, the belt 6 wound around it gradually tightens. The other end of the belt 6 is fixed to the eccentric drum 4 via the belt clamping device 7. Under the tension of the belt 6, the eccentric drum 4 rotates around the rotation center on the base 1. When the eccentric drum 4 rotates, its crank mechanism drives the outer scissor frame 32 to move. One end of the outer scissor frame 32 is connected to the eccentric drum 4, and the other end is hinged to the upper fixed seat 36 of the upper frame 2, and simultaneously connected to the moving end of the linear displacement sensor 37 on the base 1. The movement of the outer scissor frame 32 drives the inner scissor frame 31 to move. The inner scissor frame 31 is hinged to the middle of the outer scissor frame 32. One end of the inner scissor frame 31 is hinged to the lower fixed seat 33 of the base 1, and the other end slides along the inner slide rail 35 inside the upper frame 2 via the inner roller 34. The scissor fork assembly 3 gradually unfolds, pushing the upper frame 2 to rise smoothly.

[0028] During the ascent, displacement sensor 37 monitors the displacement changes of outer scissor frame 32 in real time and feeds the data back to the control system to precisely control the rising height of upper frame 2. At the same time, limit switch 9 monitors the position of belt 6 at all times. If upper frame 2 rises close to the limit position, limit switch 9 will send a signal in time. After receiving the signal, the control system controls drive motor 51 to stop running to prevent upper frame 2 from rising excessively.

[0029] When goods need to be lowered, the drive motor 51 reverses, the drum 52 rotates in the opposite direction, and the belt 6 gradually loosens. Under the weight of the goods, the upper frame 2 drives the scissor fork assembly 3 to retract. The outer scissor frame 32 and the inner scissor frame 31 move in the opposite direction to when it is rising, and the upper frame 2 descends smoothly. When it approaches the lowest position, the buffer rubber part 12 at the upper end of the support column 11 will buffer the upper frame 2 to prevent it from colliding directly with the base 1 and protect the equipment.

[0030] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A scissor lift table characterized by, The application relates to a novel type of mechanical arm, which comprises a base (1), a top frame (2) connected with the base (1) through a scissor fork group (3), a middle eccentric winding drum (4) rotatably installed on the base (1), one end of the eccentric winding drum (4) being hingedly connected with a connecting rod (13), the other end of the connecting rod (13) being hingedly connected with the scissor fork group (3), a belt winding drum power mechanism (5) arranged on the base (1), a belt clamping device (7) arranged in the eccentric winding drum (4) and used for fixing one end of a belt (6), and the other end of the belt (6) being connected with the belt winding drum power mechanism (5) through a guide pipe (8) arranged at the other end of the eccentric winding drum (4).

2. A scissor lift table as in claim 1, wherein, The scissor fork group (3) comprises an inner scissor frame (31), the inner scissor frame (31) being hingedly connected with a middle part of an outer scissor frame (32), one end of the inner scissor frame (31) being hingedly connected with a lower fixing base (33) of the base (1), the other end of the inner scissor frame (31) being installed on an inner slide (35) in the top frame (2) through an inner roller (34), one end of the outer scissor frame (32) being hingedly connected with an upper fixing base (36) on the top frame (2), the other end of the outer scissor frame (32) being installed on an outer slide (39) of the base (1) through an outer roller (38) and being connected with a moving end of a linear displacement sensor (37) arranged on the base (1).

3. A scissor lift table as in claim 1, wherein, The belt clamping device (7) comprises a fixed crossbeam (71), the fixed crossbeam (71) being installed at both ends of the eccentric winding drum (4), at least one locking bolt (72) being arranged on the fixed crossbeam (71), a locking base plate (73) being arranged at the lower end of the locking bolt (72), a through hole (74) being arranged on the locking base plate (73), an auxiliary roller (75) being rotatably installed in the through hole (74), and one end of the belt (6) being fixed on the locking base plate (73) through a clamping plate (76) and passing through the auxiliary roller (75).

4. A scissor lift table as in claim 1, wherein, The belt clamping device (7) comprises a fixed crossbeam (71), the fixed crossbeam (71) being installed at both ends of the eccentric winding drum (4), at least one locking bolt (72) being arranged on the fixed crossbeam (71), a locking base plate (73) being arranged at the lower end of the locking bolt (72), and one end of the belt (6) being fixed on the locking base plate (73) through a clamping plate (76).

5. A scissor lift platform according to claim 3 or 4, wherein, The belt winding drum power mechanism (5) comprises at least one driving motor (51), a winding drum (52) being connected with the output end of the driving motor (51), and the other end of the belt (6) being fixedly connected with the winding drum (52).

6. A scissor lift table as claimed in claim 5, wherein, A limit switch (9) for measuring the position of the belt (6) is arranged on the base (1).

7. A scissor lift table as in claim 5, wherein, A guide roller (10) for driving the belt (6) to change direction is rotatably arranged on the base (1).

8. A scissor lift table as in claim 1, wherein, A plurality of supporting columns (11) for supporting the lowest position of the top frame (2) are arranged on the base (1).

9. A scissor lift table as claimed in claim 8, wherein, A buffer rubber part (12) is arranged at the upper end of the supporting column (11).

10. A scissor lift table as in claim 1, wherein, An anti-skid rubber pad or a waist-shaped mounting hole for fixation is arranged on the base (1).

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