Shopping cart wheel mounting apparatus

Abstract

The application discloses shopping cart wheel mounting equipment and belongs to the technical field of wheel mounting equipment, which comprises an installation platform, a first guide rail mechanism, a second guide rail mechanism, an automatic mounting assembly, an automatic feeding mechanism, a belt conveyor, an electric feeding disc and a bearing frame. The second guide rail mechanism comprises a second horizontal guide rail, a third guide rail assembly and a fourth guide rail assembly. The automatic mounting assembly comprises a rotating disc, a base, a first driving motor, a limiting plate and a hexagonal wrench. The hexagonal end of the hexagonal wrench is concentric with the rotating disc. Through the above mode, the front and rear distance of the V-shaped beam and the wheel assembly can be adjusted, the space for the subsequent wheel assembly installation process to the automatic mounting assembly can be avoided, the angle of the shopping cart framework on the horizontal plane can be adjusted, the two ends of the two V-shaped beams can be sequentially adjusted to the position of the automatic mounting assembly, the lower fastening bolt can be inserted into the threaded hole at the end of the V-shaped beam, and the application has the characteristics of convenient operation and flexible adjustment.

Description

Technical Field

[0001] This invention relates to the field of wheel mounting equipment technology, and more specifically to shopping cart wheel mounting equipment. Background Technology

[0002] Shopping carts are common transportation tools in shopping malls and supermarkets. They are usually equipped with four wheels to enable flexible movement and braking. The quality of the shopping cart's wheel assembly directly affects its lifespan, ease of pushing, and safety. Figure 1 As shown, in existing technologies, the two V-shaped beams and two crossbeams of a shopping cart are generally fixed by welding, and threaded holes are provided at both ends of the V-shaped beams; for example... Figure 2 As shown, the existing shopping cart wheel assembly includes a bracket, a wheel body, fastening bolts, and a dust cover. The wheel body is rotatably connected to the bracket via a rotating shaft. The fastening bolts are fixedly connected to the bracket. Nuts at the ends of the fastening bolts are distributed between the bracket and the wheel body. The wheel assembly is fixedly connected to the threaded holes at the ends of the V-beam via the fastening bolts. Before installing the wheel assembly, the dust cover needs to be pre-installed on top of the bracket. The dust cover serves to prevent dust between the V-beam and the bracket. In existing technologies, the clamps of shopping cart frames are mostly rigid structures with low flexibility. They cannot flexibly adjust the position and angle of the shopping cart frame. When installing the wheel assembly, workers need to repeatedly perform actions such as picking up, aligning, and tightening. Long-term operation can easily lead to fatigue and affect production efficiency.

[0003] Based on this, the present invention designs a shopping cart wheel installation device to solve the above problems. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a shopping cart wheel installation device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A shopping cart wheel mounting device, comprising a mounting platform and a support frame, wherein the support frame is distributed on one side of the mounting platform, characterized in that: The mounting platform is equipped with a first guide rail mechanism, and a second guide rail mechanism is mounted on the first guide rail mechanism. The second guide rail mechanism includes a second horizontal guide rail, a third guide rail assembly, and a fourth guide rail assembly. The second horizontal guide rail is mounted on the first guide rail mechanism, and the third guide rail assembly and the fourth guide rail assembly are both mounted on the second horizontal guide rail. An automatic installation assembly is installed on the installation platform. The automatic installation assembly includes a rotating disk, a base, a first drive motor, a limit plate, and a box wrench. The first drive motor is fixedly installed on the installation platform. The base is fixedly installed at an eccentric position on the surface of the rotating disk. The box wrench is fixedly installed on the top of the base. The limit plate is fixedly installed on one side of the base. The box end of the box wrench is concentric with the rotating disk. The output end of the first drive motor is fixedly connected to the input shaft below the rotating disk through a flexible coupling. A torque sensor for real-time acquisition of torque signals during the tightening process is installed between the rotating disk and the base. The support frame is equipped with an automatic feeding mechanism, a belt conveyor and an electric feeding tray. The belt conveyor is located on the side of the electric feeding tray away from the installation platform. Furthermore, the automatic feeding mechanism includes a linear module, a second horizontal slide, an electric rotating platform, a third longitudinal guide rail, and a feeding component. The linear module is fixedly installed inside the support frame, the second horizontal slide is fixedly connected to the output end of the linear module, the electric rotating platform is fixedly installed on the second horizontal slide, the third longitudinal guide rail is fixedly installed on the upper surface of the electric rotating platform, and the feeding component is installed inside the third longitudinal guide rail. Furthermore, the feeding assembly includes an electric cylinder, a lifting frame, a first clamping assembly, and a second clamping assembly. The fixed end of the electric cylinder is fixedly connected to the upper part of the third longitudinal guide rail. The lifting frame is fixedly installed on the movable end of the electric cylinder and is slidably connected to the third longitudinal guide rail. The first clamping assembly and the second clamping assembly are both installed on the lifting frame and are connected by transmission. Furthermore, the first clamping assembly includes a bidirectional lead screw, a hollow worm gear, a second drive motor, and a first clamping member. A guide groove is provided on the surface of the lifting frame. One end of the bidirectional lead screw is rotatably connected to the guide groove. The second drive motor is fixedly connected to the lifting frame. The other end of the bidirectional lead screw is fixedly connected to the output end of the second drive motor. The hollow worm gear is fixedly sleeved in the middle position of the bidirectional lead screw. Two sets of the first clamping members are respectively threaded onto the bidirectional lead screw on both sides of the hollow worm gear. The end of the first clamping member near the lifting frame slides in contact with the guide groove. Furthermore, the second clamping assembly includes a worm gear disk and a second clamping member. The worm gear disk is rotatably connected to the lifting frame, and the hollow worm meshes with the worm gear disk. The surfaces of the worm gear disk and the lifting frame are respectively provided with arc-shaped holes and rectangular holes, and several sets of the second clamping members are slidably connected in the arc-shaped holes and rectangular holes. Furthermore, the first guide rail mechanism includes a first horizontal guide rail, a first horizontal slide table, and a manual rotating platform. The first horizontal guide rail is fixedly installed on the surface of the mounting platform, the first horizontal slide table is slidably connected to the surface of the first horizontal guide rail, the manual rotating platform is rotatably connected to the middle position of the first horizontal slide table, and the second horizontal guide rail is fixedly installed above the manual rotating platform. Furthermore, the third guide rail assembly includes a third horizontal guide rail, a first longitudinal guide rail, a first clamp, a first longitudinal slide, and a spring. The third horizontal guide rail is slidably connected to the surface of the second horizontal guide rail, and the two sets of first longitudinal guide rails are slidably connected to the surface of the third horizontal guide rail. The first clamp is fixedly installed on the surface of the first longitudinal slide, and the first longitudinal slide is slidably connected to the surface of the first longitudinal guide rail. The spring is movably sleeved on the surface of the first longitudinal guide rail, and one end of the spring abuts against the first longitudinal slide. Furthermore, the fourth guide rail assembly includes a fourth horizontal guide rail, a second longitudinal guide rail, a second clamp, a second longitudinal slide, and a second spring. The fourth horizontal guide rail is slidably connected to the surface of the second horizontal guide rail, and two sets of the second longitudinal guide rails are slidably connected to the surface of the fourth horizontal guide rail. The second clamp is fixedly installed on the surface of the second longitudinal slide. The second spring is movably sleeved on the surface of the second longitudinal guide rail, with one end of the second spring abutting against the second longitudinal slide. The length of the third horizontal guide rail is greater than the length of the fourth horizontal guide rail, and the height of the first longitudinal guide rail is greater than the height of the second longitudinal guide rail. Limit blocks are fixedly connected to the first and second longitudinal guide rails near the second horizontal guide rail. The other ends of the first spring and the other ends of the second spring abut against the limit blocks, respectively. Furthermore, a flat plate is fixedly connected to one end of the belt conveyor near the electric feeding tray; Furthermore, the electric feeding disc has grooves on its surface, and a wheel assembly is placed in the grooves. Several grooves are arranged in a ring on the surface of the electric feeding disc. The grooves near the linear module are horizontally aligned with the belt conveyor, and one side of the grooves abuts against the bracket of the wheel assembly.

[0006] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention, through the combination of the first guide rail mechanism and the second guide rail mechanism, after the shopping cart frame is fixed, can not only adjust the front and rear distance between the V-beam and the wheel assembly, so as to make room for the subsequent installation of the wheel assembly into the automatic installation component, but also adjust the angle of the shopping cart frame on the horizontal plane, so as to adjust the two ends of the two V-beams to the position of the automatic installation component in sequence. When the threaded hole at the end of the V-beam is above the fastening bolt, the fastening bolt below can be inserted into the threaded hole at the end of the V-beam, which has the characteristics of easy operation and flexible adjustment. 2. The present invention, through the coordinated arrangement of the first guide rail mechanism, the second guide rail mechanism and the automatic installation component, allows the worker to insert the lower fastening bolt into the threaded hole at the end of the V-beam. When the first drive motor controls the rotating disk, base, limit plate, wheel assembly and box wrench to rotate, the fastening bolt can be automatically screwed into the threaded hole under the pressure applied by the worker. After the V-beam is loosened, the fastening bolt of the wheel assembly automatically disengages from the box wrench. There is no need for manual screwing of the fastening bolt into the threaded hole, which has the characteristics of high work efficiency. 3. This invention, through the coordinated arrangement of an automatic feeding mechanism, a belt conveyor, and an electric feeding disc, allows the second clamping component to place the dust cover over the bracket or outside the fastening bolts while the first clamping component holds the wheel assembly in the groove. This achieves pre-installation of the dust cover and the wheel assembly. The automatic feeding mechanism then automatically assembles the pre-installed wheel assembly into the automatic installation component, eliminating the need for manual assembly of the dust cover and wheel assembly and resulting in high work efficiency. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0008] Figure 1 A 3D view of the shopping cart frame in the prior art; Figure 2 A perspective view of a wheel assembly in the prior art; Figure 3 This is a perspective view of the shopping cart wheel mounting device of the present invention; Figure 4 This is a perspective view showing the installation platform, first guide rail mechanism, second guide rail mechanism, and automatic installation components of the present invention in cooperation. Figure 5 This is a perspective view showing the cooperation between the first guide rail mechanism and the second guide rail mechanism of the present invention. Figure 6 This is a perspective view of the present invention used for mounting wheel assemblies; Figure 7 This is a perspective view of the support frame, automatic feeding mechanism, belt conveyor and electric feeding tray of the present invention in combination; Figure 8 This is a schematic diagram showing the disassembled feeding assembly of the present invention; Figure 9 This is a perspective view of the first clamping member and the second clamping assembly of the present invention in cooperation; Figure 10 This is a top view showing the cooperation between the support frame, automatic feeding mechanism, belt conveyor and electric feeding tray of the present invention; Figure 11 For the present invention Figure 10 Sectional view of AA; Figure 12 This is a cross-sectional view of the dust cover being pre-installed onto the wheel assembly using a feeding assembly, according to the present invention.

[0009] The labels in the diagram represent: 1. Shopping cart frame; 11. V-beam; 12. Crossbeam; 13. Threaded hole; 2. Mounting platform; 3. First guide rail mechanism; 31. First horizontal guide rail; 32. First horizontal slide; 33. Manual rotating platform; 4. Second guide rail mechanism; 41. Second horizontal guide rail; 42. Third guide rail assembly; 421. Third horizontal guide rail; 422. First longitudinal guide rail; 423. First clamp; 424. First longitudinal slide; 425. Spring one; 43. Fourth guide rail assembly; 431. Fourth horizontal guide rail; 432. Second longitudinal guide rail; 433. Second clamp; 434. Second longitudinal slide; 435. Spring two; 44. Limit block; 5. Automatic installation component; 51. Rotating disk; 52. Base; 53. First drive motor; 54. Box wrench; 5 5. Limiting plate; 6. Bearing frame; 7. Automatic feeding mechanism; 71. Linear module; 72. Second horizontal slide; 73. Electric rotating platform; 74. Third longitudinal guide rail; 75. Feeding assembly; 751. Electric cylinder; 752. Lifting frame; 7521. Rectangular hole; 753. First clamping assembly; 7531. Bidirectional lead screw; 7532. Hollow worm gear; 7533. Second drive motor; 7534. First clamping component; 754. Second clamping assembly; 7541. Worm gear; 7542. Arc-shaped hole; 7543. Second clamping component; 755. Sealing cover; 8. Belt conveyor; 81. Flat plate; 9. Electric feeding tray; 91. Groove; 10. Wheel assembly; 101. Bracket; 102. Wheel body; 103. Fastening bolt; 104. Dust cover. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0011] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-7 Shopping cart wheel installation equipment includes an installation platform 2 and a support frame 6, wherein the support frame 6 is distributed on one side of the installation platform 2; The installation platform 2 is equipped with a first guide rail mechanism 3, and a second guide rail mechanism 4 is installed on the first guide rail mechanism 3. The second guide rail mechanism 4 includes a second horizontal guide rail 41, a third guide rail assembly 42, and a fourth guide rail assembly 43. The second horizontal guide rail 41 is installed on the first guide rail mechanism 3, and the third guide rail assembly 42 and the fourth guide rail assembly 43 are both installed on the second horizontal guide rail 41. The installation platform 2 is equipped with an automatic installation component 5, which includes a rotating disk 51, a base 52, a first drive motor 53, a limiting plate 55, and a box wrench 54. The first drive motor 53 is fixedly installed on the installation platform 2, the rotating disk 51 is fixedly installed on the output end above the first drive motor 53, the base 52 is fixedly installed at an eccentric position on the surface of the rotating disk 51, the box wrench 54 is fixedly installed on the top of the base 52, the limiting plate 55 is fixedly installed on one side of the base 52, and the box end of the box wrench 54 is concentric with the rotating disk 51. The support frame 6 is equipped with an automatic feeding mechanism 7, a belt conveyor 8 and an electric feeding tray 9. The belt conveyor 8 is located on the side of the electric feeding tray 9 away from the installation platform 2. In this embodiment, after the wheel assembly 10 is installed into the automatic installation component 5, the hexagonal nut end of the fastening bolt 103 is embedded into the box wrench 54, and one side of the wheel body 102 contacts the surface of the limiting plate 55 to prevent the wheel assembly 10 from forming a circumferential limit. When the first drive motor 53 controls the rotating disk 51, the base 52, the limiting plate 55 and the box wrench 54 to rotate, the rotating limiting plate 55 can drive the wheel assembly 10 to rotate around the axis of the opening of the rotating disk 51, the fastening bolt 103 and the box wrench 54. The output end of the first drive motor 53 is fixedly connected to the input shaft below the rotating disk 51 through a flexible coupling (not marked in the figure). A torque sensor (not marked in the figure) is installed between the rotating disk 51 and the base 52. The torque sensor is used to collect the torque signal transmitted during the tightening process in real time. The torque sensor is a flange-type static torque sensor or a dynamic torque sensor. The computer control system controls the rotation of the first drive motor 53. The torque sensor and the flexible coupling drive the rotating disk 51, the base 52, the box wrench 54 and the wheel assembly 10 to rotate together. Under the pressure applied by the operator, the fastening bolt 103 can be automatically screwed into the threaded hole 13. As the fastening bolt 103 is screwed in, the tightening torque gradually increases. The torque sensor detects the current torque value in real time and feeds the torque signal back to the computer control system. The computer control system compares the measured torque with a preset threshold of 70 N·m. When the computer control system detects that the real-time torque value reaches 70 N·m, it immediately sends a stop command to the first drive motor 53, and the first drive motor 53 stops rotating. At the same time, the computer control system can record the final torque value and issue an audible and visual prompt of "tightening complete" through an alarm device (not marked in the figure). This ensures that the tightening torque of the fastening bolts 103 of each wheel assembly 10 reaches the standard value of 70 N·m, avoiding torque deviations caused by factors such as initial thread resistance and lubrication status due to the preset number of rotations. This significantly improves the consistency and reliability of installation quality.

[0012] Example 2: In some embodiments, such as Figures 3-7 As shown, in a preferred embodiment of the present invention, the first guide rail mechanism 3 includes a first horizontal guide rail 31, a first horizontal slide 32, and a manual rotating platform 33. The first horizontal guide rail 31 is fixedly installed on the surface of the mounting platform 2. The first horizontal slide 32 is slidably connected to the surface of the first horizontal guide rail 31. The manual rotating platform 33 is rotatably connected to the middle position of the first horizontal slide 32. The second horizontal guide rail 41 is fixedly installed above the manual rotating platform 33. The manual rotating platform 33 is specifically installed in the bearing on the surface of the first horizontal slide 32. The third guide rail assembly 42 includes a third horizontal guide rail 421, a first longitudinal guide rail 422, a first clamp 423, a first longitudinal slide 424, and a spring 425. The third horizontal guide rail 421 is slidably connected to the surface of the second horizontal guide rail 41. Two sets of the first longitudinal guide rails 422 are slidably connected to the surface of the third horizontal guide rail 421. The first clamp 423 is fixedly installed on the surface of the first longitudinal slide 424. The first longitudinal slide 424 is slidably connected to the surface of the first longitudinal guide rail 422. The spring 425 is movably sleeved on the surface of the first longitudinal guide rail 422, and one end of the spring 425 abuts against the first longitudinal slide 424. The fourth guide rail assembly 43 includes a fourth horizontal guide rail 431, a second longitudinal guide rail 432, a second clamp 433, a second longitudinal slide 434, and a second spring 435. The fourth horizontal guide rail 431 is slidably connected to the surface of the second horizontal guide rail 41. Two sets of the second longitudinal guide rails 432 are slidably connected to the surface of the fourth horizontal guide rail 431. The second clamp 433 is fixedly installed on the surface of the second longitudinal slide 434. The second spring 435 is movably sleeved on the surface of the second longitudinal guide rail 432. One end of the second spring 435 abuts against the second longitudinal slide 434. The length of the third horizontal guide rail 421 is greater than the length of the fourth horizontal guide rail 431. The height of the first longitudinal guide rail 422 is greater than the height of the second longitudinal guide rail 432. A limiting block 44 is fixedly connected to the first longitudinal guide rail 422 and the second longitudinal guide rail 432 near the second horizontal guide rail 41. The other ends of the first spring 425 and the second spring 435 abut against the limiting block 44, respectively.

[0013] In this embodiment, the two crossbeams 12, one long and one short, of the shopping cart frame 1 are respectively placed in the first clamp 423 and the second clamp 433. When the shopping cart wheel installation equipment is working, the operator holds the two V-shaped beams 11 with both hands and makes a pushing and pulling motion. This can control the shopping cart frame 1, the second guide rail mechanism 4 and the first horizontal slide 32 to move together along the first horizontal guide rail 31. This is used to adjust the front and rear distance between the V-shaped beams 11 and the wheel assembly 10 or the automatic installation component 5, so as to make room for the subsequent installation of the wheel assembly 10 into the automatic installation component 5. By making left and right swinging movements, the shopping cart frame 1, the second guide rail mechanism 4, and the manual rotating platform 33 can be rotated to adjust the angle of the shopping cart frame 1 on the horizontal plane, so as to facilitate the sequential adjustment of the two ends of the two V-shaped beams 11 to the position of the automatic installation component 5; the two first longitudinal guide rails 422 in the third guide rail assembly 42 and the two second longitudinal guide rails 432 in the fourth guide rail assembly 43 can slide along the third horizontal guide rail 421 and the fourth horizontal guide rail 431 respectively, and can adaptively adjust the position of the first clamp 423 and the second clamp 433 according to the length of the crossbeam 12; When the threaded hole 13 at the end of the V-beam 11 is above the fastening bolt 103, when the worker holds the two V-beams 11 with both hands and makes a pressing motion, the first longitudinal slide 424 and the first clamp 423 can slide up and down along the first longitudinal guide rail 422, and the second longitudinal slide 434 and the second clamp 433 can slide up and down along the second longitudinal guide rail 432, so that the fastening bolt 103 below can be inserted into the threaded hole 13 at the end of the V-beam 11. When the first spring 425 and the second spring 435 are in a compressed state, and the first drive motor 53 controls the rotating disk 51, the base 52, the limit plate 55, the wheel assembly 10 and the box wrench 54 to rotate, the fastening bolt 103 can be automatically screwed into the threaded hole 13 under the pressure applied by the worker. After the V-beam 11 is released, the spring 1 425 and the spring 2 435 push upward to make the shopping cart frame 1 and the wheel assembly 10 rise synchronously, and the fastening bolt 103 of the wheel assembly 10 automatically disengages from the wrench 54.

[0014] Example 3: In some embodiments, such as Figures 3-12 As shown, in a preferred embodiment of the present invention, the automatic feeding mechanism 7 includes a linear module 71, a second horizontal slide 72, an electric rotating platform 73, a third longitudinal guide rail 74, and a feeding component 75. The linear module 71 is fixedly installed in the support frame 6. The second horizontal slide (72) is fixedly connected to the output end of the linear module (71). The electric rotating platform 73 is fixedly installed on the second horizontal slide 72. The third longitudinal guide rail 74 is fixedly installed on the upper surface of the electric rotating platform 73. The feeding component 75 is installed in the third longitudinal guide rail 74. The electric rotating platform 73 includes a rotating platform and a drive motor. The drive motor is fixedly installed below the second horizontal slide 72. The rotating platform is fixedly connected to the output end of the drive motor. The third longitudinal guide rail 74 is fixedly installed on the surface of the rotating platform. The feeding assembly 75 includes an electric cylinder 751, a lifting frame 752, a sealing cover 755, a first clamping assembly 753, and a second clamping assembly 754. The fixed end of the electric cylinder 751 is fixedly connected to the upper part of the third longitudinal guide rail 74. The lifting frame 752 is fixedly installed on the movable end of the electric cylinder 751 and is slidably connected to the third longitudinal guide rail 74. The first clamping assembly 753 and the second clamping assembly 754 are both installed on the surface of the lifting frame 752. The sealing cover 755 is fixedly connected to the lifting frame 752 and is used to seal the first clamping assembly 753 and the second clamping assembly 754 from above to prevent dust. The first clamping assembly 753 and the second clamping assembly 754 are connected by a transmission. The first clamping assembly 753 includes a bidirectional lead screw 7531, a hollow worm gear 7532, a second drive motor 7533, and a first clamping member 7534. A guide groove is formed on the surface of the lifting frame 752. One end of the bidirectional lead screw 7531 is rotatably connected to the guide groove. The second drive motor 7533 is fixedly connected to the lifting frame 752. The other end of the bidirectional lead screw 7531 is fixedly connected to the output end of the second drive motor 7533. The hollow worm gear 7532 is fixedly sleeved in the middle position of the bidirectional lead screw 7531. Two sets of the first clamping members 7534 are respectively threadedly connected to the bidirectional lead screw 7531 on both sides of the hollow worm gear 7532. The end of the first clamping member 7534 near the lifting frame 752 slides in contact with the guide groove. There are three sets of the first clamping members 7534. The first clamping member 7534 is a clamping block. The second clamping assembly 754 includes a worm gear disk 7541 and a second clamping member 7543. The worm gear disk 7541 is rotatably connected to the lifting frame 752. The hollow worm 7532 meshes with the worm gear disk 7541. The surfaces of the worm gear disk 7541 and the lifting frame 752 are respectively provided with an arc-shaped hole 7542 and a rectangular hole 7521. Several sets of the second clamping members 7543 are slidably connected in the arc-shaped hole 7542 and the rectangular hole 7521. The second clamping member 7543 is an L-shaped clamping plate, and the surface of the L-shaped clamping plate is provided with anti-slip grooves. The belt conveyor 8 is fixedly connected to a plate 81 at one end near the electric feeding disc 9. The belt conveyor 8 includes a support frame and a conveyor belt assembly. The conveyor belt assembly is installed inside the support frame. The conveyor belt assembly is a mature technology in the prior art, so its structure will not be described in detail. The plate 81 is fixedly installed on the support frame. The width of the plate 81 is less than the minimum distance between the two first clamping members 7534. The conveyor belt above the belt conveyor 8 is not lower than the height of the plate 81. The conveyor belt can transport the dust cover 104 to the surface of the plate 81. The electric feeding disc 9 has a groove 91 on its surface, and a wheel assembly 10 is placed in the groove 91. Several grooves 91 are arranged in a ring on the surface of the electric feeding disc 9. The groove 91 on the side closer to the linear module 71 is horizontally aligned with the belt conveyor 8. One side of the groove 91 abuts against or supports and limits the bracket 101 of the wheel assembly 10 to prevent the wheel assembly 10 from tilting and to ensure that the fastening bolt 103 is perpendicular to the surface of the electric feeding disc 9. The groove 91 on the side closer to the linear module 71 is horizontally aligned with the belt conveyor 8. In this embodiment, the electric feeding tray 9 includes a drive motor and a feeding tray. The drive motor is fixedly installed below the support frame 6, and the output end of the drive motor is fixedly connected to the bottom of the feeding tray. The drive motor controls the rotation of the feeding tray. The side of the electric feeding tray 9 away from the linear module 71 is the loading station. The loading robot places the wheel assembly 10 into the groove 91 on the surface of the feeding tray. When the automatic loading mechanism 7 is working, the linear module 71 first controls the second horizontal slide 72, the electric rotating platform 73, the third longitudinal guide rail 74, and the loading component 75 to move above the flat plate 81. The electric cylinder 751 controls the lifting frame 752, the first clamping component 753, and the second clamping component 754 to descend a preset distance. The minimum distance of the first clamping member 7534 is greater than the width of the plate 81, so the first clamping member 7534 will not interfere with the plate 81 when it descends. The second drive motor 7533 controls the bidirectional lead screw 7531 and the hollow worm gear 7532 to rotate clockwise by a preset angle. The rotating hollow worm gear 7532 controls the worm wheel disk 7541 to rotate. The rotating worm wheel disk 7541 controls the second clamping member 7543 to move radially along the rectangular hole 7521 by a preset distance through the arc hole 7542. The three sets of second clamping members 7543 are used to clamp the dust cover 104. The rotating bidirectional lead screw 7531 controls the two sets of first clamping members 7534 to move in opposite directions. At this time, the width of the two sets of first clamping members 7534 is greater than the width of the bracket 101. Next, the linear module 71 controls the second horizontal slide 72, the electric rotating platform 73, the third longitudinal guide rail 74, and the feeding assembly 75 to move to above the wheel assembly 10 inside the groove 91. The electric cylinder 751 controls the lifting frame 752, the first clamping assembly 753, and the second clamping assembly 754 to descend a preset distance, automatically placing the dust cover 104 on top of the bracket 101 or outside the fastening bolt 103. The second drive motor 7533 controls the bidirectional lead screw 7531 and the hollow worm gear 7532 to rotate counterclockwise by a preset angle. Simultaneously, the second clamping member 7543, moving in the opposite direction, releases the dust cover 104, while the two sets of first clamping members 7534, moving in opposite directions, clamp onto the bracket. On both sides of the frame 101, the electric cylinder 751 controls the lifting frame 752, the first clamping component 753, the second clamping component 754 and the wheel assembly 10 to rise to a preset height. The electric rotating platform 73 controls the third longitudinal guide rail 74 and the feeding component 75 to rotate 90 degrees. Then, the linear module 71 controls the wheel assembly 10, the first clamping component 753 and the second clamping component 754 to move above the automatic installation component 5. The electric cylinder 751 controls the lifting frame 752, the first clamping component 753, the second clamping component 754 and the wheel assembly 10 to descend a preset distance to automatically insert the hexagonal nut end of the fastening bolt 103 into the plum blossom end of the wrench 54. After automatic feeding is completed, the second drive motor 7533 controls the bidirectional lead screw 7531 and the hollow worm gear 7532 to rotate clockwise by a preset angle of two. This is used to control the two sets of first clamping components 7534 to disengage from the bracket 101. By controlling the rotation angle, the three sets of second clamping components 7543 that move radially will not contact the dust cover 104. The electric cylinder 751 controls the lifting frame 752 to rise to a preset height. This is used to control the first clamping components 753 and the second clamping components 754 to disengage from the wheel assembly 10, which facilitates the subsequent installation of the shopping cart frame 1 and the wheel assembly 10, thus realizing the automated feeding of the wheel assembly 10.

[0015] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shopping cart wheel installation device, comprising an installation platform (2) and a support frame (6), wherein the support frame (6) is distributed on one side of the installation platform (2), characterized in that: The installation platform (2) is equipped with a first guide rail mechanism (3), and the first guide rail mechanism (3) is equipped with a second guide rail mechanism (4). The second guide rail mechanism (4) includes a second horizontal guide rail (41), a third guide rail assembly (42) and a fourth guide rail assembly (43). The second horizontal guide rail (41) is installed on the first guide rail mechanism (3), and the third guide rail assembly (42) and the fourth guide rail assembly (43) are both installed on the second horizontal guide rail (41). The installation platform (2) is equipped with an automatic installation component (5). The automatic installation component (5) includes a rotating disk (51), a base (52), a first drive motor (53), a limiting plate (55), and a box wrench (54). The first drive motor (53) is fixedly installed on the installation platform (2). The base (52) is fixedly installed at an eccentric position on the surface of the rotating disk (51). The box wrench (54) is fixedly installed on the top of the base (52). The limiting plate (55) is fixedly installed on one side of the base (52). The box end of the box wrench (54) is concentric with the rotating disk (51). The output end of the first drive motor (53) is fixedly connected to the input shaft below the rotating disk (51) through an elastic coupling. A torque sensor for real-time acquisition of torque signals during the tightening process is installed between the rotating disk (51) and the base (52). The support frame (6) is equipped with an automatic feeding mechanism (7), a belt conveyor (8) and an electric feeding tray (9). The belt conveyor (8) is located on the side of the electric feeding tray (9) away from the installation platform (2).

2. The shopping cart wheel installation device according to claim 1, characterized in that, The automatic feeding mechanism (7) includes a linear module (71), a second horizontal slide (72), an electric rotating platform (73), a third longitudinal guide rail (74), and a feeding component (75). The linear module (71) is fixedly installed in the support frame (6). The second horizontal slide (72) is fixedly connected to the output end of the linear module (71). The electric rotating platform (73) is fixedly installed on the second horizontal slide (72). The third longitudinal guide rail (74) is fixedly installed on the upper surface of the electric rotating platform (73). The feeding component (75) is installed in the third longitudinal guide rail (74).

3. The shopping cart wheel installation device according to claim 2, characterized in that, The feeding assembly (75) includes an electric cylinder (751), a lifting frame (752), a first clamping assembly (753), and a second clamping assembly (754). The fixed end of the electric cylinder (751) is fixedly connected to the upper part of the third longitudinal guide rail (74). The lifting frame (752) is fixedly installed on the movable end of the electric cylinder (751). The lifting frame (752) is slidably connected to the third longitudinal guide rail (74). The first clamping assembly (753) and the second clamping assembly (754) are both installed on the lifting frame (752). The first clamping assembly (753) and the second clamping assembly (754) are connected in a transmission manner.

4. The shopping cart wheel installation device according to claim 3, characterized in that, The first clamping assembly (753) includes a bidirectional lead screw (7531), a hollow worm gear (7532), a second drive motor (7533), and a first clamping member (7534). A guide groove is provided on the surface of the lifting frame (752). One end of the bidirectional lead screw (7531) is rotatably connected to the guide groove. The second drive motor (7533) is fixedly connected to the lifting frame (752). The other end of the bidirectional lead screw (7531) is fixedly connected to the output end of the second drive motor (7533). The hollow worm gear (7532) is fixedly sleeved in the middle position of the bidirectional lead screw (7531). Two sets of first clamping members (7534) are respectively threaded onto the bidirectional lead screw (7531) on both sides of the hollow worm gear (7532). The end of the first clamping member (7534) near the lifting frame (752) slides in contact with the guide groove.

5. The shopping cart wheel installation device according to claim 4, characterized in that, The second clamping assembly (754) includes a worm gear disk (7541) and a second clamping member (7543). The worm gear disk (7541) is rotatably connected to the lifting frame (752). The hollow worm (7532) meshes with the worm gear disk (7541). The surfaces of the worm gear disk (7541) and the lifting frame (752) are respectively provided with an arc-shaped hole (7542) and a rectangular hole (7521). Several sets of the second clamping members (7543) are slidably connected in the arc-shaped hole (7542) and the rectangular hole (7521).

6. The shopping cart wheel installation device according to claim 1, characterized in that, The first guide rail mechanism (3) includes a first horizontal guide rail (31), a first horizontal slide (32) and a manual rotating platform (33). The first horizontal guide rail (31) is fixedly installed on the surface of the mounting platform (2). The first horizontal slide (32) is slidably connected to the surface of the first horizontal guide rail (31). The manual rotating platform (33) is rotatably connected to the middle position of the first horizontal slide (32). The second horizontal guide rail (41) is fixedly installed above the manual rotating platform (33).

7. The shopping cart wheel installation device according to claim 6, characterized in that, The third guide rail assembly (42) includes a third horizontal guide rail (421), a first longitudinal guide rail (422), a first clamp (423), a first longitudinal slide (424), and a spring (425). The third horizontal guide rail (421) is slidably connected to the surface of the second horizontal guide rail (41). Two sets of the first longitudinal guide rails (422) are slidably connected to the surface of the third horizontal guide rail (421). The first clamp (423) is fixedly installed on the surface of the first longitudinal slide (424). The first longitudinal slide (424) is slidably connected to the surface of the first longitudinal guide rail (422). The spring (425) is movably sleeved on the surface of the first longitudinal guide rail (422). One end of the spring (425) abuts against the first longitudinal slide (424).

8. The shopping cart wheel installation device according to claim 7, characterized in that, The fourth guide rail assembly (43) includes a fourth horizontal guide rail (431), a second longitudinal guide rail (432), a second clamp (433), a second longitudinal slide (434), and a second spring (435). The fourth horizontal guide rail (431) is slidably connected to the surface of the second horizontal guide rail (432). Two sets of second longitudinal guide rails (432) are slidably connected to the surface of the fourth horizontal guide rail (431). The second clamp (433) is fixedly installed on the surface of the second longitudinal slide (434). The second spring (435) is movably sleeved on the second longitudinal guide rail (431). 432) On the surface, one end of spring two (435) abuts against the second longitudinal slide (434), the length of the third horizontal guide rail (421) is greater than the length of the fourth horizontal guide rail (431), the height of the first longitudinal guide rail (422) is greater than the height of the second longitudinal guide rail (432), the first longitudinal guide rail (422) and the second longitudinal guide rail (432) are fixedly connected to the limit block (44) near the position of the second horizontal guide rail (41), and the other end of spring one (425) and the other end of spring two (435) abut against the limit block (44) respectively.

9. The shopping cart wheel installation device according to claim 2, characterized in that, A flat plate (81) is fixedly connected to one end of the belt conveyor (8) near the electric feeding plate (9).

10. The shopping cart wheel installation device according to claim 9, characterized in that, The electric feeding tray (9) has a groove (91) on its surface. A wheel assembly (10) is placed in the groove (91). Several grooves (91) are arranged in a ring on the surface of the electric feeding tray (9). The groove (91) near the linear module (71) is horizontally aligned with the belt conveyor (8). One side of the groove (91) abuts against the bracket (101) of the wheel assembly (10).

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