A treadway belt conveyor

Abstract

The utility model belongs to the transport machine technical field, concretely is a kind of treading type lifting transport machine, including footrest lifting assembly, pedestal and lifting platform, the footrest lifting assembly fixed mounting is in the upper surface of pedestal, the lower surface of lifting platform is fixedly installed with footrest lifting assembly, the through slot is opened in lifting platform, transport mechanism is provided in the through slot, mounting bracket provides stable support for entirety, cylinder drive fixed block moves, drive second sliding block to slide along second slide rail, second rack moves along with and drive gear rotation, further make first rack drive first sliding block to slide along first slide rail, realize the synchronous reverse movement of two placing frame, can flexible adaptation different size article, the auxiliary roller shaft in placing frame can assist article to move, reduce the friction damage between article and placing frame, by the cooperation of rack, gear and sliding block, effectively form protection to article, ensure the stability and safety of article in the process of transportation, improve transport reliability.

Description

Technical Field

[0001] This utility model belongs to the field of transport machinery technology, specifically a pedal-operated lifting transport machine. Background Technology

[0002] Currently, there are three main ways for people to transport goods to higher places: manual handling is laborious and inefficient, electric lifts can improve efficiency but are expensive, and hand-operated lifts are laborious to use and have a slow lifting speed, which cannot meet the needs of some scenarios where transportation speed is required. Based on this, a new transportation equipment is needed to solve these problems, and the pedal-operated lifting conveyor has emerged.

[0003] In existing transportation equipment, the protective structures for objects are mostly of fixed size, which makes it difficult to adapt to objects of different sizes. This mismatch in size can easily cause objects to shake or fall during transportation.

[0004] Therefore, this utility model provides a pedal-operated lifting and transporting machine. Utility Model Content

[0005] In order to overcome the shortcomings of existing technologies and solve the technical problems raised in the background art.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The foot-operated lifting conveyor of this utility model includes a foot-operated lifting component, a base, and a lifting platform. The foot-operated lifting component is fixedly installed on the upper surface of the base, and the lower surface of the lifting platform is fixedly installed with the foot-operated lifting component. A through groove is opened in the lifting platform, and a transportation mechanism is arranged in the through groove for transporting objects. A protective auxiliary mechanism is fixedly installed on the lower surface of the lifting platform for protecting objects. A sleeve is symmetrically fixedly installed on one side of the base, and a height adjustment mechanism is arranged on one side of the sleeve. The height adjustment mechanism is slidably installed in the sleeve, and a pusher is fixedly installed at the top of the height adjustment mechanism.

[0007] Preferably, the transport mechanism includes two drive shafts rotatably mounted inside the lifting platform, with a conveyor belt sleeved on the surface of the two drive shafts, and a drive motor for driving the two drive shafts to rotate is fixedly mounted on one side of the lifting platform.

[0008] Preferably, the protective auxiliary mechanism includes a mounting frame fixedly installed on the lower surface of the lifting platform. A first slide rail and a second slide rail are symmetrically fixedly installed on the inner wall of the mounting frame. A first slider and a second slider are symmetrically slidably installed on the surfaces of the first slide rail and the second slide rail. A first rack is fixedly installed inside the first slider, and a second rack is fixedly installed inside the second slider. A first rotating shaft is rotatably installed on the inner wall of the mounting frame. A gear is fixedly installed on the surface of the first rotating shaft. The gear meshes with the first rack and the second rack respectively. A placement frame is fixedly installed on the upper surface of both the first slider and the second slider. Several sets of auxiliary rollers are rotatably installed in each placement frame. A cylinder is fixedly installed on the lower surface of the mounting frame. A fixing block is fixedly installed at the output end of the cylinder. The fixing block is fixedly connected to the second slider. A first sliding groove is provided on the mounting frame, and the fixing block is slidably installed in the first sliding groove.

[0009] Preferably, the height adjustment mechanism includes a lifting column slidably installed in a sleeve, the top end of the lifting column being fixedly connected to a pusher, a plurality of limiting grooves being formed on the surface of the lifting column, a first through groove being formed on one side of the sleeve, an mounting plate being symmetrically fixedly installed on one side of the sleeve, a second rotating shaft being rotatably installed inside the mounting plate, a lever being rotatably installed on the surface of the second rotating shaft, a second through groove being formed at one end of the lever, a guide post being fixedly installed on the inner wall of the second through groove, a return spring being sleeved on the surface of the guide post, a contact plate being fixedly installed at one end of the return spring, and the other end of the return spring being fixedly installed on the inner wall of the second through groove, a third rotating shaft being installed on the rotating shaft at the end of the lever away from the second rotating shaft, a pawl being fixedly installed on the surface of the third rotating shaft, the pawl being adapted to the plurality of limiting grooves, and one side of the pawl contacting the contact plate.

[0010] Preferably, a handle is fixedly installed on the surface of the pawl, and the pawl can be rotated around the third pivot by operating the handle. A protective pad is fixedly installed on the surface of the handle.

[0011] Preferably, each of the four corners of the base facing the ground is fixedly equipped with casters.

[0012] Preferably, the surface of the pusher is fixedly equipped with an anti-slip texture to increase the friction between the operator's hand and the pusher.

[0013] Preferably, the foot-operated lifting assembly includes a scissor arm, a foot pedal, a hydraulic pump, and a hydraulic cylinder mounted on a base. The bottom of the scissor arm is hinged to the base via a pivot pin connector, and the top of the scissor arm is fixedly connected to the lifting platform. The hydraulic pump and the hydraulic cylinder are mounted on the base, and the hydraulic pump is connected to the hydraulic cylinder via an oil pipe. One end of the hydraulic cylinder is hinged to a member of the scissor arm.

[0014] The beneficial effects of this utility model are as follows: 1. The step-operated lifting conveyor of this utility model has a mounting frame that provides stable support for the whole. A cylinder drives the fixed block to move, which in turn drives the second slider to slide along the second slide rail. The second rack moves accordingly and drives the gear to rotate, which in turn causes the first rack to drive the first slider to slide along the first slide rail. This achieves synchronous and opposite movement of the two placement frames, which can flexibly adapt to objects of different sizes. The auxiliary rollers inside the placement frames can assist the movement of the objects and reduce friction damage between the objects and the placement frames. Through the coordinated cooperation of the rack, gear and slider, the objects are effectively protected, ensuring the stability and safety of the objects during transportation and improving the reliability of transportation.

[0015] 2. The pedal-operated lifting conveyor described in this utility model provides a basis for adjusting the height of the pusher by sliding the lifting column and the sleeve. The mounting plate and the second rotating shaft support the lever to rotate flexibly. The guide column, the return spring, and the contact plate cooperate to ensure that the pawl and the limit groove are stably engaged. By reciprocatingly pressing down the lever, the pawl and the limit groove are engaged in sequence to raise the height of the pusher. After rising, the return spring pushes the contact plate to make the pawl lock into the limit groove to form a self-locking mechanism, ensuring stable position. Pulling the handle can disengage the pawl from the limit groove to lower the height. After adjustment, the pawl automatically resets and locks. The whole system achieves flexible adjustment and reliable locking of the pusher height through the synergy of lever drive, pawl limit, and spring reset, adapting to the needs of different operators and improving the convenience and safety of operation. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the transportation mechanism and protective auxiliary mechanism of this utility model; Figure 3 This is a schematic diagram of the protective auxiliary mechanism of this utility model; Figure 4 This is an exploded view of the protective auxiliary mechanism of this utility model; Figure 5 This is a schematic diagram of the height adjustment mechanism and pusher of this utility model; Figure 6 This is an exploded view of the height adjustment mechanism of this utility model; In the diagram: 1. Foot-operated lifting assembly; 2. Base; 3. Lifting platform; 4. Transport mechanism; 41. Drive motor; 42. Drive shaft; 43. Conveyor belt; 5. Protective auxiliary mechanism; 51. Mounting bracket; 52. Cylinder; 53. First slide rail; 54. Second slide rail; 55. First rack; 56. Second rack; 57. First rotating shaft; 58. Gear; 59. First slider; 510. Second slider; 511. Placement frame; 5 12. Auxiliary roller; 513. Fixing block; 514. First slide groove; 6. Sleeve; 8. First through groove; 9. Height adjustment mechanism; 91. Mounting plate; 92. Second rotating shaft; 93. Lever; 94. Second through groove; 95. Guide column; 96. Return spring; 97. Contact plate; 98. Pawl; 99. Lifting column; 910. Limit groove; 911. Third rotating shaft; 10. Handle; 11. Push handle; 12. Caster wheel. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1 to 6 As shown in the embodiment of this utility model, a foot-operated lifting conveyor includes a foot-operated lifting assembly 1, a base 2, and a lifting platform 3. The foot-operated lifting assembly 1 is fixedly installed on the upper surface of the base 2, and the lower surface of the lifting platform 3 is fixedly installed with the foot-operated lifting assembly 1. A through groove is formed in the lifting platform 3, and a conveying mechanism 4 is arranged in the through groove. The conveying mechanism 4 includes two drive shafts 42 rotatably installed in the lifting platform 3. A conveyor belt 43 is sleeved on the surface of the two drive shafts 42. A drive motor 41 for driving the two drive shafts 42 to rotate is fixedly installed on one side of the lifting platform 3. A protective device is fixedly installed on the lower surface of the lifting platform 3. The auxiliary protection mechanism 5 is used to protect the object. A sleeve 6 is symmetrically fixedly installed on one side of the base 2. A height adjustment mechanism 9 is provided on one side of the sleeve 6 and is slidably installed in the sleeve 6. A pusher 11 is fixedly installed on the top of the height adjustment mechanism 9. The foot-operated lifting assembly 1 includes a scissor arm, a foot pedal, a hydraulic pump, and a hydraulic cylinder set on the base 2. The bottom of the scissor arm is hinged to the base 2 through a shaft pin connector. The top of the scissor arm is fixedly connected to the lifting platform 3. The hydraulic pump and the hydraulic cylinder are set on the base 2. The hydraulic pump is connected to the hydraulic cylinder through an oil pipe. One end of the hydraulic cylinder is hinged to the scissor arm.

[0020] Specifically, when the foot-operated lifting conveyor is in operation, the foot-operated lifting assembly 1 consists of a scissor arm, foot pedal, hydraulic pump, and hydraulic cylinder assembly. These components work together, and the operator's foot pedal action drives the movement of the scissor arm, thereby realizing the lifting function of the lifting platform 3. First, the height of the lifting platform 3 is adjusted using the foot-operated lifting assembly 1. The operator operates the foot-operated lifting assembly 1 by stepping on it, which drives the fixed lifting platform 3 to rise or fall, thereby adjusting the lifting platform 3 to a suitable height for loading and unloading objects. Once the height of the lifting platform 3 is adjusted, if objects need to be transported, the transport mechanism 4 is activated. The drive motor 41 in the transport mechanism 4 starts working, and the drive motor 41 drives two drive shafts 42 that are rotatably installed inside the lifting platform 3 to rotate. Because the surfaces of the two drive shafts 42 are fitted with... When the drive shaft 42 rotates, the conveyor belt 43 also rotates. When an object is placed on the conveyor belt 43, the conveyor belt 43 can carry the object for transportation, realizing the transfer of the object. During transportation, the protective auxiliary mechanism 5 on the lower surface of the lifting platform 3 plays a role in protecting the object on the conveyor belt 43, preventing the object from falling during transportation and ensuring the safety of transportation. In addition, a sleeve 6 is symmetrically fixedly installed on one side of the base 2. A height adjustment mechanism 9 is slidably installed inside the sleeve 6. The height adjustment mechanism 9 can adjust the position of the lifting column 99 inside the sleeve 6, thereby adjusting the height of the pusher 11 fixedly installed at the top, making it convenient for operators of different heights to push the equipment. At the same time, the pusher 11 also makes it easy for operators to push the entire conveyor to move, improving the mobility of the equipment.

[0021] like Figures 2 to 4 As shown, the protective auxiliary mechanism 5 includes a mounting bracket 51 fixedly installed on the lower surface of the lifting platform 3. A first slide rail 53 and a second slide rail 54 are symmetrically fixedly installed on the inner wall of the mounting bracket 51. A first slider 59 and a second slider 510 are symmetrically slidably installed on the surfaces of the first slide rail 53 and the second slide rail 54. A first rack 55 is fixedly installed inside the first slider 59, and a second rack 56 is fixedly installed inside the second slider 510. A first rotating shaft 57 is rotatably installed on the inner wall of the mounting bracket 51, and a gear 5 is fixedly installed on the surface of the first rotating shaft 57. 8. Gear 58 is meshed with first rack 55 and second rack 56 respectively. Placement frames 511 are fixedly installed on the upper surfaces of first slider 59 and second slider 510. Several sets of auxiliary rollers 512 are rotatably installed in the placement frames 511. Cylinder 52 is fixedly installed on the lower surface of mounting frame 51. Fixing block 513 is fixedly installed at the output end of cylinder 52. Fixing block 513 is fixedly connected to second slider 510. First slide groove 514 is opened on mounting frame 51, and fixing block 513 is slidably installed in first slide groove 514.

[0022] Specifically, when the protective auxiliary mechanism 5 is working, the mounting frame 51 is fixed to the lower surface of the lifting platform 3, providing support for the entire mechanism. When protective auxiliary operation is required, the cylinder 52 on the lower surface of the mounting frame 51 is activated, and the output end of the cylinder 52 pushes the fixed block 513 to move. Since the fixed block 513 is slidably installed in the first slide groove 514 of the mounting frame 51 and is fixedly connected to the second slider 510, it will drive the second slider 510 to slide along the second slide rail 54. The second rack 56 inside the second slider 510 moves accordingly. This is because the gear 58 on the surface of the first rotating shaft 57 on the inner wall of the mounting frame 51 meshes with the first rack 55 and the second rack 56 respectively. The movement of the second rack 56 drives the gear 58 to rotate, which in turn drives the first rack 55 to move, causing the first slider 59 to slide along the first slide rail 53. The placement frame 511 on the upper surface of the first slider 59 and the second slider 510 also moves with the movement of the first slider 59 and the second slider 510, causing the placement frame 511 to slide on the surface of the conveyor belt 43. Several sets of auxiliary rollers 512 are rotatably installed inside the placement frame 511. When an object is placed inside the placement frame 511, they can assist the movement of the object and provide protective assistance. The rotation direction of the auxiliary rollers 512 is consistent with the running direction of the conveyor belt 43 to ensure the stability and safety of the object during transportation.

[0023] like Figures 5 to 6 As shown, the height adjustment mechanism 9 includes a lifting column 99 slidably installed inside the sleeve 6. The top end of the lifting column 99 is fixedly connected to the pusher 11. Several sets of limiting grooves 910 are formed on the surface of the lifting column 99. A first through groove 8 is formed on one side of the sleeve 6. A mounting plate 91 is symmetrically fixedly installed on one side of the sleeve 6. A second rotating shaft 92 is rotatably installed inside the mounting plate 91. A lever 93 is rotatably installed on the surface of the second rotating shaft 92. A second through groove 94 is formed at one end of the lever 93. A guide post 95 is fixedly installed on the inner wall of the second through groove 94. A return spring is sleeved on the surface of the guide post 95. 96. One end of the return spring 96 is fixedly mounted with a contact plate 97, and the other end of the return spring 96 is fixedly mounted on the inner wall of the second through groove 94. The lever 93 is mounted with a third rotating shaft 911 at the end away from the second rotating shaft 92. A pawl 98 is fixedly mounted on the surface of the third rotating shaft 911. The pawl 98 is adapted to several sets of limiting grooves 910. One side of the pawl 98 is in contact with the contact plate 97. A handle 10 is fixedly mounted on the surface of the pawl 98. By operating the handle 10, the pawl 98 can be driven to rotate around the third rotating shaft 911. A protective pad is fixedly mounted on the surface of the handle 10.

[0024] Specifically, when the height adjustment mechanism 9 is working, the lifting column 99 is slidably installed inside the sleeve 6, and the top of the lifting column 99 is fixedly connected to the pusher 11. The height of the pusher 11 can be adjusted by changing the position of the lifting column 99 inside the sleeve 6. Several sets of limiting grooves 910 on the surface of the lifting column 99 are used for positioning. A second rotating shaft 92 is installed in the mounting plate 91 on one side of the sleeve 6. The lever 93 can rotate around the second rotating shaft 92. A guide post 95 is provided in the second through groove 94 at one end of the lever 93. A return spring 96 is fitted onto lever 5. One end of the return spring 96 is connected to the contact plate 97. The return spring 96 is fixed to the inner wall of the second through groove 94. The other end of lever 93 is fitted with a pawl 98 via a third rotating shaft 911. The pawl 98 is adapted to the limiting groove 910 and one side contacts the contact plate 97. The handle 10 on the surface of the pawl 98 can drive the pawl 98 to rotate around the third rotating shaft 911. When it is necessary to raise the push handle 11, the lever 93 is pressed down repeatedly. When pressed down, the lever 93 rotates around the second rotating shaft 92. The pawl 98 moves with the lever 93 and engages sequentially with the limiting groove 910 of the lifting column 99. Each downward press pushes the lifting column 99 upward a certain distance. By continuously changing the position of the lifting column 99, the height is raised. After reaching the desired position, the spring force of the return spring 96 pushes the contact plate 97, causing the pawl 98 to tightly engage with the corresponding limiting groove 910, forming a self-locking mechanism to prevent the lifting column 99 from falling. The contact surface between the pawl 98 and the limiting groove 910 forms a reverse-locking mechanism. The return spring 96... The preload ensures that the pawl 98 cannot slip out. When it is necessary to lower the pusher 11, hold the handle 10 and pull the pawl 98 to make it rotate around the third pivot 911 and disengage from the limit groove 910. At this time, the lifting column 99 can slide down along the sleeve 6 under the action of gravity or external force. After adjusting to the target height, release the handle 10. The pawl 98 will re-engage into the limit groove 910 under the action of the return spring 96 to complete the locking, thereby realizing the height adjustment and achieving flexible adjustment and stable locking of the height of the pusher 11.

[0025] like Figure 1 As shown, casters 12 are fixedly installed at all four corners of the base 2 facing the ground.

[0026] Specifically, the casters 12 can rotate 360 ​​degrees flexibly, allowing operators to easily push the entire foot-operated lifting transport machine to move within the work area by pushing the handle 11, eliminating the need for strenuous handling and significantly reducing the labor intensity when moving equipment. It is especially suitable for scenarios that require frequent adjustments to the work position.

[0027] like Figure 1 As shown, the surface of the push handle 11 is fixedly equipped with anti-slip texture to increase the friction between the operator's hand and the push handle 11.

[0028] Specifically, during the process of moving the equipment, the anti-slip texture can effectively prevent the operator's hands from slipping due to sweat, water, or uneven force, prevent the equipment from going out of control due to sudden slippage, and reduce safety hazards such as collisions and tipping. Especially when carrying heavy objects or moving on wet and slippery ground, it can significantly improve the stability of operation.

[0029] Working principle: When the protective auxiliary mechanism 5 is working, the mounting frame 51 is fixed to the lower surface of the lifting platform 3, providing support for the entire mechanism. When protective auxiliary operation is required, the cylinder 52 on the lower surface of the mounting frame 51 is activated, and its output end pushes the fixed block 513 to move. Since the fixed block 513 is slidably installed in the first slide groove 514 of the mounting frame 51 and is fixedly connected to the second slider 510, it will drive the second slider 510 to slide along the second slide rail 54. The second rack 56 inside the second slider 510 moves accordingly, and the first rotating shaft 57 on the inner wall of the mounting frame 51... The gear 58 on the surface meshes with the first rack 55 and the second rack 56 respectively. Therefore, the movement of the second rack 56 will drive the gear 58 to rotate, which in turn will drive the first rack 55 to move, so that the first slider 59 slides along the first slide rail 53. The placement frame 511 on the upper surface of the first slider 59 and the second slider 510 will also move with the slider. Several sets of auxiliary rollers 512 are rotatably installed in the placement frame 511. When the object is placed in the placement frame 511, it can assist the object to move, realize the protection assistance of the object, and ensure the stability and safety of the object during transportation. When the height adjustment mechanism 9 is working, the lifting column 99 is slidably installed inside the sleeve 6, and its top end is fixedly connected to the pusher 11. The height of the pusher 11 can be adjusted by changing the position of the lifting column 99 inside the sleeve 6. Several sets of limiting grooves 910 on the surface of the lifting column 99 are used for positioning. A second rotating shaft 92 is installed in the mounting plate 91 on one side of the sleeve 6. The lever 93 can rotate around the second rotating shaft 92. A guide post 95 is provided in the second through groove 94 at one end of the lever 93. A return spring 96 is sleeved on the guide post 95. One end of the return spring 96 is connected to the contact plate 97, and the other end is fixed to the inner wall of the second through groove 94. A pawl 98 is installed on the other end of the lever 93 through the third rotating shaft 911. The pawl 98 is adapted to the limiting groove 910 and one side is in contact with the contact plate 97. The handle 10 on the surface of the pawl 98 can drive it to rotate around the third rotating shaft 911. When it is necessary to raise the pusher 11... The lever 93 is pressed down repeatedly, causing it to rotate around the second pivot 92. The pawl 98 moves with it and engages sequentially with the limiting groove 910 of the lifting column 99. Each press pushes the lifting column 99 upward a certain distance. By continuously changing its position, the height is increased. After reaching the desired height, the spring force of the return spring 96 pushes the contact plate 97, causing the pawl 98 to lock tightly into the corresponding limiting groove 910, forming a self-locking mechanism to prevent the lifting column 99 from falling. When it is necessary to lower the pusher 11, the handle 10 is held and the pawl 98 is pulled, causing it to rotate around the third pivot 911 and disengage from the limiting groove 910. The lifting column 99 can then slide down the sleeve 6 under the action of gravity or external force. After adjusting to the target height, the handle 10 is released, and the pawl 98, under the action of the return spring 96, re-engages into the limiting groove 910 to complete the locking, thus achieving height adjustment. This allows for flexible adjustment and stable locking of the height of the pusher 11.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A foot-operated lifting conveyor, comprising a foot-operated lifting assembly (1), a base (2), and a lifting platform (3), characterized in that: The foot-operated lifting assembly (1) is fixedly installed on the upper surface of the base (2). The lower surface of the lifting platform (3) is fixedly installed with the foot-operated lifting assembly (1). A through groove is provided in the lifting platform (3). A transport mechanism (4) is provided in the through groove for transporting objects. A protective auxiliary mechanism (5) is fixedly installed on the lower surface of the lifting platform (3) for protecting objects. A sleeve (6) is symmetrically fixedly installed on one side of the base (2). A height adjustment mechanism (9) is provided on one side of the sleeve (6), and the height adjustment mechanism (9) is slidably installed in the sleeve (6). A pusher (11) is fixedly installed at the top of the height adjustment mechanism (9).

2. The pedal-operated lifting conveyor according to claim 1, characterized in that: The transport mechanism (4) includes two drive shafts (42) rotatably mounted on the inner wall of the through groove. A conveyor belt (43) is sleeved on the surface of the two drive shafts (42). A drive motor (41) for driving the two drive shafts (42) to rotate is fixedly installed on one side of the lifting platform (3).

3. The pedal-operated lifting conveyor according to claim 1, characterized in that: The protective auxiliary mechanism (5) includes a mounting frame (51) fixedly installed on the lower surface of the lifting platform (3). A first slide rail (53) and a second slide rail (54) are symmetrically fixedly installed on the inner wall of the mounting frame (51). A first slider (59) and a second slider (510) are symmetrically slidably installed on the surfaces of the first slide rail (53) and the second slide rail (54). A first rack (55) is fixedly installed inside the first slider (59), and a second rack (56) is fixedly installed inside the second slider (510). A first rotating shaft (57) is rotatably installed on the inner wall of the mounting frame (51), and a gear (58) is fixedly installed on the surface of the first rotating shaft (57). The gear (58) meshes with the first rack (55) and the second rack (56) respectively. The upper surfaces of the first slider (59) and the second slider (510) are fixedly mounted with a placement frame (511). Several sets of auxiliary rollers (512) are rotatably mounted in the placement frame (511). The lower surface of the mounting frame (51) is fixedly mounted with a cylinder (52). The output end of the cylinder (52) is fixedly mounted with a fixing block (513). The fixing block (513) is fixedly connected to the second slider (510). The mounting frame (51) is provided with a first sliding groove (514), and the fixing block (513) is slidably mounted in the first sliding groove (514).

4. A pedal-operated lifting conveyor according to claim 1, characterized in that: The height adjustment mechanism (9) includes a lifting column (99) slidably installed in a sleeve (6). The top end of the lifting column (99) is fixedly connected to a pusher (11). Several sets of limiting grooves (910) are provided on the surface of the lifting column (99). A first through groove (8) is provided on one side of the sleeve (6). A mounting plate (91) is symmetrically fixedly installed on one side of the sleeve (6). A second rotating shaft (92) is rotatably installed in the mounting plate (91). A lever (93) is rotatably installed on the surface of the second rotating shaft (92). A second through groove (94) is provided at one end of the lever (93). 4) A guide post (95) is fixedly installed on the inner wall. A return spring (96) is sleeved on the surface of the guide post (95). A contact plate (97) is fixedly installed on one end of the return spring (96). The other end of the return spring (96) is fixedly installed on the inner wall of the second through groove (94). A third rotating shaft (911) is installed on the shaft of the lever (93) away from the second rotating shaft (92). A pawl (98) is fixedly installed on the surface of the third rotating shaft (911). The pawl (98) is adapted to several sets of the limiting grooves (910). One side of the pawl (98) is in contact with the contact plate (97).

5. A pedal-operated lifting conveyor according to claim 4, characterized in that: A handle (10) is fixedly installed on the surface of the pawl (98). By operating the handle (10), the pawl (98) can be driven to rotate around the third pivot (911). A protective pad is fixedly installed on the surface of the handle (10).

6. A pedal-operated lifting conveyor according to claim 1, characterized in that: The base (2) is fixedly equipped with casters (12) at each of its four corners facing the ground.

7. A pedal-operated lifting conveyor according to claim 1, characterized in that: The surface of the pusher (11) is fixedly fitted with an anti-slip texture to increase the friction between the operator's hand and the pusher (11).

8. A pedal-operated lifting conveyor according to claim 1, characterized in that: The foot-operated lifting assembly (1) includes a scissor arm, a foot pedal, a hydraulic pump, and a hydraulic cylinder mounted on a base (2). The bottom of the scissor arm is hinged to the base (2) via a pivot pin connector. The top of the scissor arm is fixedly connected to the lifting platform (3). The hydraulic pump and the hydraulic cylinder are mounted on the base (2). The hydraulic pump is connected to the hydraulic cylinder via an oil pipe. One end of the hydraulic cylinder is hinged to the scissor arm.

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