Distribution robot with height adjusting mechanism

Abstract

The invention discloses a distribution robot with a height adjusting mechanism, and relates to the technical field of distribution equipment, the distribution robot comprises a rack and a lifting mechanism, the lifting mechanism comprises a supporting square pipe and a pushing assembly, an extending square rod is slidably mounted at the top end of the supporting square pipe, and a hydraulic cylinder is fixedly mounted at the top of the supporting square pipe; the pushing assembly comprises a lead screw and a transmission, a servo motor is installed in the middle of the top of the transmission, an H-shaped frame is installed at a threaded groove in the outer side of the lead screw in a threaded mode, and the H-shaped frame is fixedly connected with the top of the H-shaped frame in a threaded mode. I-shaped wheels are installed at the positions, close to the supporting square pipes, of the tops of the H-shaped frames in a rolling mode, round rollers are installed at the bottoms of the H-shaped frames in a rolling mode, and jacking plates are fixedly installed in the middles of the outer sides of the H-shaped frames. According to the distribution robot with the height adjusting mechanism, the height adjusting effect is achieved, the height can be adjusted, the limitation is reduced, the overall stability is good, and object distribution is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of delivery equipment, and in particular to a delivery robot with a height adjustment mechanism. Background Art

[0002] In recent years, with the increasing maturity of artificial intelligence (AI) technology and the demand for unmanned, contactless delivery, new opportunities have emerged for the development and application of delivery robots. Many locations have introduced automated delivery robots, improving the efficiency of delivery services and increasing revenue. With the advancement of automation and AI, robotics has made significant progress, and intelligent robots have brought significant convenience to people's lives and services. Robots possess fundamental capabilities such as perception, decision-making, and execution, enabling them to assist or even replace humans in performing arduous and complex tasks. Robots have already liberated people from strenuous physical labor. In many locations, such as hotels and office buildings, delivery robots can deliver goods quickly and conveniently.

[0003] At present, traditional delivery robots are difficult to adjust in height during use, and are inconvenient to deliver some objects to high places. They have great limitations and affect their overall use. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A delivery robot with a height adjustment mechanism, comprising: A frame, wherein wheels are mounted on the bottom of the frame, and an arc-shaped notch is formed at the bottom of the inner cavity of the frame near the wheel; A lifting mechanism, which is used to adjust the height of the delivered object and is installed in the middle of the rack; The lifting mechanism includes a supporting square tube and a pushing assembly, the bottom end of the supporting square tube is hinged to the bottom of the inner cavity of the frame and close to the arc-shaped notch, the pushing assembly is installed at the bottom of the inner cavity of the frame and close to the supporting square tube, the top of the supporting square tube is slidably installed with an extension square rod, the top of the supporting square tube is fixedly installed with a hydraulic cylinder, the telescopic end of the hydraulic cylinder is fixedly installed with the top of the extension square rod, and the top of the extension square rod is rotatably installed with a connecting tooth; The pushing assembly includes a screw rod and a transmission, the screw rod is rotatably installed at the bottom of the frame cavity through a bracket and close to the position of the supporting square tube, the transmission is installed at the bottom of the frame cavity and away from one end of the arc-shaped notch, a servo motor is installed in the middle of the top of the transmission, the output shaft of the servo motor and the screw rod are installed through the transmission, an H-shaped frame is threadedly installed at the threaded groove on the outer side of the screw rod, an I-shaped wheel is rotatably installed on the top of the H-shaped frame and close to the position of the supporting square tube, a round roller is rotatably installed on the bottom of the H-shaped frame, and a lifting plate is fixedly installed in the middle of the outer side of the H-shaped frame. After the supporting square tube is rotated and adjusted in angle by the lifting force of the I-shaped wheel, the extended square rod can be lifted, and at the same time, the telescopic end of the hydraulic cylinder is extended to apply a driving force to the extended square rod, and under the guiding action of the supporting square tube, the extended square rod is driven to extend obliquely upward, so that the height of the delivered object can be adjusted, which is convenient for adapting to objects transported to high places, has strong adaptability and reduces limitations.

[0005] Preferably, the supporting square tube is installed at an angle, there are two supporting square tubes, and the two supporting square tubes are installed symmetrically along the central axis in the middle of the frame, the hydraulic cylinder is installed directly above the supporting square tube, the bottom of the supporting square tube is hinged to the bottom of the inner cavity of the frame, and the bottom end of the connecting tooth is hinged to the extending square rod, so that the structure will not get stuck when adjusting the height of the object, thereby making the overall operation of the mechanism smooth.

[0006] Preferably, the I-shaped wheel is installed directly below the supporting square tube, the bottom of the outer cylindrical surface of the circular roller fits with the bottom of the inner cavity of the frame, there are two screw rods, and the two screw rods are symmetrically installed along the servo motor, and the rotation of the output end of the servo motor and the transmission are used to rotate the screw rods, and combined with the threaded installation between the H-shaped frame and the screw rods, and the bottom of the outer cylindrical surface of the circular roller fits with the bottom of the inner cavity of the frame, so that the H-shaped frame is driven to move, and the I-shaped wheel is used to provide rolling support for the supporting square tube, and rolling friction is used to reduce friction, which facilitates the application of jacking force to the supporting square tube, thereby allowing the supporting square tube to rotate and adjust the angle, which is helpful for subsequent height adjustment.

[0007] Preferably, a storage mechanism is installed on the top of the rack, and the storage mechanism includes a tower telescopic rod and a storage frame, the bottom end of the tower telescopic rod is fixedly installed to the bottom of the rack inner cavity, the bottom of the storage frame is fixedly installed to the top of the tower telescopic rod, the top end of the connecting teeth is fixedly installed to the bottom of the storage frame, the bottom of the inner cavity of the storage frame is fixedly installed with an anti-slip strip, and a cover plate assembly is installed on the top of the storage frame. With the support of the connecting teeth, when the extended square rod extends outward, an upward pushing force can be applied to the bottom of the storage frame, and the tower telescopic rod itself is made of multiple cylinders slidably connected together, so that the tower telescopic rod can be extended, thereby guiding the movement of the storage frame, so that the storage frame moves upward more smoothly and is less likely to tilt.

[0008] Preferably, the tower telescopic rod is installed vertically, and the anti-slip strips are evenly distributed at the bottom of the inner cavity of the storage frame. The material of the anti-slip strips is rubber. The objects to be delivered are placed in the storage frame, and the anti-slip strips are evenly distributed at the bottom of the inner cavity of the storage frame so that the bottom of the object contacts the anti-slip strips. The anti-slip strips can increase friction and are not prone to deviation. The anti-slip strips are made of rubber. When they are subjected to the pressure of the object, they deform and play a flexible support role, thereby protecting the bottom of the object.

[0009] Preferably, the cover plate assembly includes a top cover plate, which is rotatably mounted on the outer side of the top cover plate and the top side of the storage frame, an elastic pad is fixedly mounted on the outer edge of the top cover plate, an arc-shaped elastic sheet is fixedly mounted in the middle of the bottom of the top cover plate, and a supporting elastic ball is fixedly mounted between the middle of the top of the arc-shaped elastic sheet and the bottom of the top cover plate. The top cover plate is rotated clockwise to cover the top of the storage frame, so that the bottom of the arc-shaped elastic sheet contacts the top of the object, and the interaction of forces is used to elastically deform the arc-shaped elastic sheet and squeeze the supporting elastic ball, so that the object is subjected to reverse elastic pressing pressure, which can elastically compress the object and is not easily damaged during the delivery process.

[0010] Preferably, there are five arc-shaped elastic sheets, and the five arc-shaped elastic sheets are evenly distributed on the bottom of the top cover plate, and the material supporting the elastic ball is rubber.

[0011] Preferably, a braking mechanism is installed at the bottom of the inner cavity of the frame and near the arc-shaped notch, and the braking mechanism includes a rectangular guide rail, the bottom of the rectangular guide rail is fixedly installed to the bottom of the inner cavity of the frame and near the arc-shaped notch, a pressing strip is slidably installed inside the rectangular guide rail, a reset spring is fixedly installed between the top of the pressing strip and the inner wall of the frame, a limiting tooth is fixedly installed on the outer side of the pressing strip and near the reset spring, and an anti-slip protrusion is fixedly installed on the outer side of the pressing strip and on one side close to the wheel. The center of gravity of the entire equipment is also rising, and when the ejector plate is driven by the H-shaped frame to move to a position close to the arc-shaped notch, the end of the ejector plate away from the H-shaped frame contacts the limit tooth, and the ejector plate continues to move, so that the limit tooth is pushed, so that the pressing strip drives the anti-skid protrusion to move close to the wheel, and the reset spring piece is squeezed and deformed, and the anti-skid protrusion is squeezed on the surface of the wheel, so that the wheel can be braked to achieve the braking effect, and the slipping situation is not likely to occur. The interaction between the structures is fully utilized to connect the structures together.

[0012] Preferably, there are two rectangular guide rails, and the two rectangular guide rails are symmetrically installed along the central axis in the middle of the frame. The pressing strip is arc-shaped, and the position of the pressing strip corresponds to the position of the arc-shaped notch.

[0013] Preferably, the reset spring is installed directly above the arc-shaped notch, the limiting teeth are installed at an angle, and the material of the anti-slip protrusion is rubber.

[0014] The present invention provides a delivery robot with a height adjustment mechanism. It has the following beneficial effects: 1. The delivery robot with a height adjustment mechanism can lift the extended square rod after the supporting square tube is rotated and adjusted by the top force of the I-shaped wheel. At the same time, the telescopic end of the hydraulic cylinder is extended to apply a driving force to the extended square rod. Under the guidance of the supporting square tube, the extended square rod is driven to extend obliquely upward, so that the height of the delivered object can be adjusted, which is convenient for adapting to the transportation of objects to high places. It has strong adaptability and reduces limitations.

[0015] 2. The delivery robot with a height adjustment mechanism uses the rotation of the servo motor output end and the transmission to rotate the screw rod. The threaded installation between the H-shaped frame and the screw rod is combined, and the bottom of the outer cylindrical surface of the round roller fits with the bottom of the inner cavity of the frame, so that the H-shaped frame is driven to move, and the I-shaped wheel is used to provide rolling support for the supporting square tube. Rolling friction is used to reduce friction, making it easier to apply a top force to the supporting square tube, so that the supporting square tube can be rotated to adjust the angle, which is helpful for subsequent height adjustment.

[0016] 3. The delivery robot with a height adjustment mechanism uses the support of the connecting teeth. When the extended square rod is extended outward, an upward pushing force can be applied to the bottom of the storage frame. The tower-type telescopic rod itself is connected by sliding multiple cylinders together, which can make the tower-type telescopic rod extend, thereby guiding the movement of the storage frame, making the upward movement of the storage frame more stable and less likely to tilt.

[0017] 4. The delivery robot with a height adjustment mechanism has a hinged connection between the bottom of the supporting square tube and the bottom of the frame cavity, and a hinged connection between the bottom end of the connecting tooth and the extended square rod, so that the structure will not get stuck when adjusting the height of the object, thereby making the overall operation of the mechanism smooth.

[0018] 5. The delivery robot with a height adjustment mechanism places the objects to be delivered into the storage frame, and uses anti-slip strips evenly distributed on the bottom of the storage frame cavity so that the bottom of the object contacts the anti-slip strips. The anti-slip strips can increase friction and are less likely to deviate. The anti-slip strips are made of rubber material. When they are deformed by the pressure of the object, they play a flexible support role, thereby protecting the bottom of the object.

[0019] 6. The delivery robot with a height adjustment mechanism rotates the top cover plate clockwise to cover the top of the storage frame, so that the bottom of the arc-shaped elastic sheet contacts the top of the object. By utilizing the interaction of forces, the arc-shaped elastic sheet is elastically deformed and squeezes the supporting elastic ball, so that the object is subjected to reverse elastic pressing force, which can elastically compress the object and prevent it from being damaged during the delivery process.

[0020] 7. The delivery robot with a height adjustment mechanism has a higher center of gravity as the storage frame is raised, and when the push plate is driven by the H-shaped frame to move to a position close to the arc-shaped notch, the end of the push plate away from the H-shaped frame contacts the limit tooth. The push plate continues to move, so that the limit tooth is pushed, so that the pressing strip drives the anti-skid protrusion to move closer to the wheel, and the reset spring is squeezed and deformed, and the anti-skid protrusion is squeezed against the surface of the wheel, so that the wheel can be braked to achieve a braking effect, and the vehicle is less likely to slip. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the delivery robot with a height adjustment mechanism according to the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of a delivery robot with a height adjustment mechanism according to the present invention; Figure 3 Schematic diagram of the connection structure between the lifting mechanism and the frame of the present invention; Figure 4This is a schematic diagram of the overall structure of the lifting mechanism of the present invention; Figure 5 Schematic diagram of the connection structure between the storage mechanism and the frame of the present invention; Figure 6 This is a schematic diagram of the overall structure of the cover assembly of the present invention; Figure 7 Schematic diagram of the connection structure between the braking mechanism and the frame of the present invention; Figure 8 It is a schematic diagram of the overall structure of the braking mechanism of the present invention.

[0022] In the figure: 1. frame; 2. wheel; 3. arc-shaped notch; 4. lifting mechanism; 5. storage mechanism; 6. braking mechanism; 41. supporting square tube; 42. extending square rod; 43. hydraulic cylinder; 44. connecting tooth; 45. pushing assembly; 451. screw rod; 452. transmission; 453. servo motor; 454. H-shaped frame; 455. I-shaped wheel; 456. round roller; 457. ejector plate; 51. tower telescopic rod; 52. storage frame; 53. anti-slip strip; 54. cover assembly; 541. top cover; 542. elastic pad; 543. arc-shaped elastic sheet; 544. supporting elastic ball; 61. rectangular guide rail; 62. pressing bar; 63. reset spring; 64. limiting tooth; 65. anti-slip protrusion. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0024] The first embodiment, as Figure 1-Figure 4 As shown, the present invention provides a technical solution: a delivery robot with a height adjustment mechanism, comprising: A frame 1, a wheel 2 is mounted on the bottom of the frame 1, and an arc-shaped notch 3 is provided at the bottom of the inner cavity of the frame 1 and near the wheel 2; A lifting mechanism 4 is used to adjust the height of the delivered object. The lifting mechanism 4 is installed in the middle of the frame 1; Among them, the lifting mechanism 4 includes a supporting square tube 41 and a pushing component 45. The bottom end of the supporting square tube 41 is hinged to the bottom of the inner cavity of the frame 1 and close to the arc-shaped notch 3. The pushing component 45 is installed at the bottom of the inner cavity of the frame 1 and close to the supporting square tube 41. The top of the supporting square tube 41 is slidably installed with an extension square rod 42. The top of the supporting square tube 41 is fixedly installed with a hydraulic cylinder 43. The telescopic end of the hydraulic cylinder 43 is fixedly installed with the top of the extension square rod 42. The top of the extension square rod 42 is rotatably installed with a connecting tooth 44. The bottom of the supporting square tube 41 is hinged to the bottom of the inner cavity of the frame 1, and the bottom end of the connecting tooth 44 is hinged to the extension square rod 42, so that the structure will not get stuck when adjusting the height of the object, thereby making the overall operation of the mechanism smooth. The supporting square tubes 41 are installed at an angle. There are two supporting square tubes 41 , and the two supporting square tubes 41 are installed symmetrically along the central axis in the middle of the frame 1 . The hydraulic cylinder 43 is installed right above the supporting square tubes 41 .

[0025] The pushing assembly 45 includes a screw rod 451 and a transmission 452. The screw rod 451 is rotatably mounted at the bottom of the inner cavity of the frame 1 and close to the position of the supporting square tube 41 through a bracket. The transmission 452 is mounted at the bottom of the inner cavity of the frame 1 and away from one end of the arc-shaped notch 3. A servo motor 453 is mounted in the middle of the top of the transmission 452. The output shaft of the servo motor 453 and the screw rod 451 are driven by the transmission 452. An H-shaped frame 454 is threadedly mounted on the threaded groove on the outer side of the screw rod 451. An I-shaped wheel 454 is rotatably mounted on the top of the H-shaped frame 454 and close to the position of the supporting square tube 41. 55. A round roller 456 is rotatably mounted on the bottom of the H-shaped frame 454, and a push plate 457 is fixedly mounted in the middle of the outer side of the H-shaped frame 454. After the supporting square tube 41 is rotated and adjusted in angle by the pushing force of the I-shaped wheel 455, the extended square rod 42 can be lifted. At the same time, the staff activates the hydraulic cylinder 43 to work. The extension end of the hydraulic cylinder 43 extends to apply a driving force to the extended square rod 42. Under the guidance of the supporting square tube 41, the extended square rod 42 is driven to extend obliquely upward, thereby adjusting the height of the delivered objects to facilitate the transportation of objects to high places.

[0026] The I-shaped wheel 455 is installed directly below the supporting square tube 41, and the bottom of the outer cylindrical surface of the round roller 456 fits with the bottom of the inner cavity of the frame 1. There are two screw rods 451, and the two screw rods 451 are symmetrically installed along the servo motor 453. The staff turns on the servo motor 453 to work, and uses the rotation of the output end of the servo motor 453 and the transmission 452 to rotate the screw rod 451. In combination with the threaded installation between the H-shaped frame 454 and the screw rod 451, and the bottom of the outer cylindrical surface of the round roller 456 fits with the bottom of the inner cavity of the frame 1, the H-shaped frame 454 is driven to move, and the I-shaped wheel 455 is used to provide rolling support for the supporting square tube 41. Rolling friction is used to reduce friction, which facilitates the application of top force to the supporting square tube 41, thereby allowing the supporting square tube 41 to rotate and adjust the angle, which is helpful for subsequent height adjustment.

[0027] The second embodiment, as Figures 1-6 As shown, based on the first embodiment: A storage mechanism 5 is installed on the top of the rack 1, and the storage mechanism 5 includes a tower telescopic rod 51 and a storage frame 52. The bottom end of the tower telescopic rod 51 is fixedly installed to the bottom of the inner cavity of the rack 1, and the bottom of the storage frame 52 is fixedly installed to the top of the tower telescopic rod 51. The top of the connecting tooth 44 is fixedly installed to the bottom of the storage frame 52, and an anti-slip strip 53 is fixedly installed on the bottom of the inner cavity of the storage frame 52. A cover assembly 54 is installed on the top of the storage frame 52. With the support of the connecting teeth 44, when the extended square rod 42 extends outward, an upward pushing force can be applied to the bottom of the storage frame 52. By utilizing the tower telescopic rod 51 itself as multiple cylinders slidably connected together, the tower telescopic rod 51 can be extended, thereby guiding the movement of the storage frame 52, making the storage frame 52 move upward more smoothly and less likely to tilt.

[0028] The tower telescopic rod 51 is installed vertically, and the anti-slip strips 53 are evenly distributed at the bottom of the inner cavity of the storage frame 52. The material of the anti-slip strips 53 is rubber. The staff places the objects to be delivered into the storage frame 52, and uses the anti-slip strips 53 evenly distributed at the bottom of the inner cavity of the storage frame 52 so that the bottom of the object contacts the anti-slip strips 53. The anti-slip strips 53 can increase the friction and are not prone to deviation. The anti-slip strips 53 are made of rubber. When the anti-slip strips 53 are subjected to the pressure of the object, they deform and have the effect of flexible support.

[0029] The cover assembly 54 includes a top cover plate 541, and the outer side of the top cover plate 541 is rotatably installed with the side of the top of the storage frame 52. An elastic pad 542 is fixedly installed at the outer edge of the top cover plate 541, and an arc-shaped elastic piece 543 is fixedly installed in the middle of the bottom of the top cover plate 541. A supporting elastic ball 544 is fixedly installed between the middle of the top of the arc-shaped elastic piece 543 and the bottom of the top cover plate 541. The top cover plate 541 is rotated clockwise to cover the top of the storage frame 52, so that the bottom of the arc-shaped elastic piece 543 contacts the top of the object. The interaction of forces is used to make the arc-shaped elastic piece 543 elastically deform and squeeze the supporting elastic ball 544, so that the object is subjected to reverse elastic pressing pressure, so that the object can be elastically compressed, which is not easy to cause damage during the delivery process.

[0030] There are five arc-shaped elastic pieces 543 , and the five arc-shaped elastic pieces 543 are evenly distributed on the bottom of the top cover plate 541 . The material supporting the elastic balls 544 is rubber.

[0031] The third embodiment, as Figures 1-8 As shown, based on the first and second embodiments; A braking mechanism 6 is installed at the bottom of the inner cavity of the frame 1 and near the arc-shaped notch 3. The braking mechanism 6 includes a rectangular guide rail 61. The bottom of the rectangular guide rail 61 is fixedly installed at the bottom of the inner cavity of the frame 1 and near the arc-shaped notch 3. A pressing strip 62 is slidably installed inside the rectangular guide rail 61. A reset spring 63 is fixedly installed between the top of the pressing strip 62 and the inner wall of the frame 1. A limiting tooth 64 is fixedly installed on the outer side of the pressing strip 62 and near the position of the reset spring 63. An anti-slip protrusion 65 is fixedly installed on the outer side of the pressing strip 62 and on one side close to the wheel 2. As the storage frame 5 2 is lifted, the center of gravity of the entire equipment is also raised, and when the lifting plate 457 is driven by the H-shaped frame 454 to move to a position close to the arc-shaped notch 3, the end of the lifting plate 457 away from the H-shaped frame 454 contacts the limiting tooth 64, and the lifting plate 457 continues to move, so that the limiting tooth 64 is pushed, so that the pressing strip 62 drives the anti-skid protrusion 65 to move close to the wheel 2, and the reset spring piece 63 is squeezed and deformed, and the anti-skid protrusion 65 is squeezed against the surface of the wheel 2, so that the wheel 2 can be braked to achieve a braking effect, and the vehicle is not likely to slip.

[0032] There are two rectangular guide rails 61 , and the two rectangular guide rails 61 are symmetrically installed along the central axis in the middle of the frame 1 . The pressing strip 62 is arc-shaped, and the position of the pressing strip 62 corresponds to the position of the arc-shaped notch 3 .

[0033] The reset spring piece 63 is installed just above the arc-shaped notch 3 , the limiting teeth 64 are installed at an angle, and the material of the anti-slip protrusion 65 is rubber.

[0034] When in use, first rotate the top cover 541 counterclockwise to open the top cover 541. At this time, the staff will place the objects to be delivered into the storage frame 52, and use the anti-slip strips 53 evenly distributed on the bottom of the inner cavity of the storage frame 52 to make the bottom of the object contact the anti-slip strips 53. The anti-slip strips 53 can increase the friction and are not easy to deviate. The anti-slip strips 53 are made of rubber material. When they are pressed by the objects, they deform and play a flexible support role. The top cover 541 is then rotated clockwise to cover the top of the storage frame 52, so that the bottom of the arc-shaped elastic piece 543 contacts the top of the object. The interaction of forces causes the arc-shaped elastic piece 543 to elastically deform and squeeze the supporting elastic ball 544, so that the object is subjected to reverse elastic pressing force. At this time, the wheels 2 are driven to roll, which can drive the rack 1 to move. The objects are elastically compressed and are less likely to be damaged during the delivery process. When it is necessary to lift the object, the staff starts the servo motor 453 to work, and uses the rotation of the output end of the servo motor 453 and the transmission 452 to rotate the screw rod 451. In combination with the threaded installation between the H-shaped frame 454 and the screw rod 451, the bottom of the outer cylindrical surface of the round roller 456 fits with the bottom of the inner cavity of the frame 1, so that the H-shaped frame 454 is driven to move, and the I-shaped wheel 455 is used to roll the supporting square tube 41. Rolling friction is used to reduce friction, which makes it easier to apply a top force to the supporting square tube 41, so that the supporting square tube 41 can rotate to adjust the angle. After the supporting square tube 41 is rotated and adjusted in angle by the pushing force of the I-shaped wheel 455, the extending square rod 42 can be lifted. At the same time, the staff activates the hydraulic cylinder 43 to work. The extension end of the hydraulic cylinder 43 extends to apply a pushing force to the extending square rod 42. Under the guidance of the supporting square tube 41, the extending square rod 42 is driven to extend obliquely upward, thereby adjusting the height of the delivered object to facilitate the transportation of objects to high places. At the same time, with the support of the connecting teeth 44, when the extending square rod 42 extends outward, an upward pushing force can be applied to the bottom of the storage frame 52. Moreover, by utilizing the tower telescopic rod 51 itself as a plurality of cylinders slidably connected together, the tower telescopic rod 51 can be extended, thereby guiding the movement of the storage frame 52, making the upward movement of the storage frame 52 more stable and less likely to be skewed. Moreover, the bottom of the supporting square tube 41 is hinged to the bottom of the inner cavity of the frame 1, and the bottom end of the connecting tooth 44 is hinged to the extending square rod 42, so that the structure will not get stuck when adjusting the height of the object, thereby making the overall operation of the mechanism smooth; At this time, the top cover 541 is opened again to take out the objects, and the telescopic end of the hydraulic cylinder 43 is retracted, and the screw rod 451 is rotated in the opposite direction, so that the storage frame 52 moves downward as a whole to reset.

[0035] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A delivery robot with a height adjustment mechanism, characterized in that: include: A frame (1), a wheel (2) is mounted on the bottom of the frame (1), and an arc-shaped notch (3) is provided at the bottom of the inner cavity of the frame (1) and near the wheel (2); A lifting mechanism (4), the lifting mechanism (4) is used to adjust the height of the delivered object, and the lifting mechanism (4) is installed in the middle of the frame (1); The lifting mechanism (4) comprises a supporting square tube (41) and a pushing assembly (45), wherein the bottom end of the supporting square tube (41) is hinged to the bottom of the inner cavity of the frame (1) and close to the arc-shaped notch (3), and the pushing assembly (45) is installed at the bottom of the inner cavity of the frame (1) and close to the supporting square tube (41). The top end of the supporting square tube (41) is slidably mounted with an extension square rod (42), and the top end of the supporting square tube (41) is fixedly mounted with a hydraulic cylinder (43), the telescopic end of the hydraulic cylinder (43) is fixedly mounted with the top end of the extension square rod (42), and the top end of the extension square rod (42) is rotatably mounted with a connecting tooth (44); The pushing assembly (45) includes a screw rod (451) and a transmission (452), wherein the screw rod (451) is rotatably mounted at the bottom of the inner cavity of the frame (1) and close to the supporting square tube (41) through a bracket, and the transmission (452) is mounted at the bottom of the inner cavity of the frame (1) and away from one end of the arc-shaped notch (3). A servo motor (453) is mounted in the middle of the top of the transmission (452), and the output shaft of the servo motor (453) and the screw rod (451) are driven and mounted through the transmission (452). An H-shaped frame (454) is threadedly mounted at the threaded groove on the outer side of the screw rod (451), and an I-shaped wheel (455) is rotatably mounted at the top of the H-shaped frame (454) and close to the supporting square tube (41). A round roller (456) is rotatably mounted at the bottom of the H-shaped frame (454), and a top moving plate (457) is fixedly mounted in the middle of the outer side of the H-shaped frame (454).

2. A delivery robot with a height adjustment mechanism according to claim 1, characterized in that: The supporting square tube (41) is installed at an angle. There are two supporting square tubes (41), and the two supporting square tubes (41) are installed symmetrically along the central axis in the middle of the frame (1). The hydraulic cylinder (43) is installed directly above the supporting square tube (41).

3. The delivery robot with a height adjustment mechanism according to claim 1, characterized in that: The I-shaped wheel (455) is installed directly below the supporting square tube (41), the bottom of the outer cylindrical surface of the circular roller (456) is in contact with the bottom of the inner cavity of the frame (1), and there are two screw rods (451), which are symmetrically installed along the servo motor (453).

4. The delivery robot with a height adjustment mechanism according to claim 1, characterized in that: A storage mechanism (5) is installed on the top of the frame (1), and the storage mechanism (5) includes a tower telescopic rod (51) and a storage frame (52). The bottom end of the tower telescopic rod (51) is fixedly installed with the bottom of the inner cavity of the frame (1), the bottom of the storage frame (52) is fixedly installed with the top of the tower telescopic rod (51), the top end of the connecting tooth (44) is fixedly installed with the bottom of the storage frame (52), the bottom of the inner cavity of the storage frame (52) is fixedly installed with an anti-slip strip (53), and the top of the storage frame (52) is installed with a cover assembly (54).

5. The delivery robot with a height adjustment mechanism according to claim 4, characterized in that: The tower-type telescopic rod (51) is installed vertically, and the anti-slip strips (53) are evenly distributed at the bottom of the inner cavity of the storage frame (52). The material of the anti-slip strips (53) is rubber.

6. The delivery robot with a height adjustment mechanism according to claim 4, characterized in that: The cover assembly (54) includes a top cover (541), the outer side of the top cover (541) is rotatably mounted on the side of the top of the storage frame (52), an elastic pad (542) is fixedly mounted on the outer edge of the top cover (541), an arc-shaped elastic sheet (543) is fixedly mounted in the middle of the bottom of the top cover (541), and a supporting elastic ball (544) is fixedly mounted between the middle of the top of the arc-shaped elastic sheet (543) and the bottom of the top cover (541).

7. The delivery robot with a height adjustment mechanism according to claim 6, characterized in that: There are five arc-shaped elastic pieces (543), and the five arc-shaped elastic pieces (543) are evenly distributed on the bottom of the top cover plate (541). The material of the supporting elastic ball (544) is rubber.

8. The delivery robot with a height adjustment mechanism according to claim 1, characterized in that: A braking mechanism (6) is installed at the bottom of the inner cavity of the frame (1) and near the arc-shaped notch (3). The braking mechanism (6) includes a rectangular guide rail (61). The bottom of the rectangular guide rail (61) is fixedly installed at the bottom of the inner cavity of the frame (1) and near the arc-shaped notch (3). A pressing strip (62) is slidably installed inside the rectangular guide rail (61). A reset spring (63) is fixedly installed between the top of the pressing strip (62) and the inner wall of the frame (1). A limiting tooth (64) is fixedly installed on the outer side of the pressing strip (62) and near the reset spring (63). An anti-slip protrusion (65) is fixedly installed on the outer side of the pressing strip (62) and near the side of the wheel (2).

9. The delivery robot with a height adjustment mechanism according to claim 8, characterized in that: There are two rectangular guide rails (61), and the two rectangular guide rails (61) are symmetrically installed along the central axis in the middle of the frame (1). The pressing strip (62) is arc-shaped, and the position of the pressing strip (62) corresponds to the position of the arc-shaped notch (3).

10. The delivery robot with a height adjustment mechanism according to claim 8, characterized in that: The reset spring (63) is installed directly above the arc-shaped notch (3), the limiting teeth (64) are installed at an angle, and the anti-slip protrusion (65) is made of rubber.

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