Tension spring damping mechanism for moving trolley

Abstract

The utility model relates to a tension spring damping mechanism for a moving trolley, and belongs to the technical field of inspection robots. Comprising an upper swing arm unit and a lower swing arm unit, the upper swing arm unit and the lower swing arm unit are symmetrically arranged up and down, and the bottom of the upper swing arm unit is connected with the top of the lower swing arm unit through a middle pin assembly; a mounting base is arranged on the upper swing arm unit, and a hub motor is arranged on the lower swing arm unit; the upper swing arm unit comprises two upper swing arms which are symmetrically arranged left and right, the top ends of the upper swing arms are meshed, and an upper tension spring is arranged between the bottoms of the two upper swing arms; the lower swing arm unit comprises two lower swing arms which are symmetrically arranged left and right, a lower tension spring is arranged between the tops of the two lower swing arms, the upper tension spring and the lower tension spring are arranged in parallel, and the bottoms of the two lower swing arms are meshed with each other; and the bottom of the upper swing arm is meshed with the top of the lower swing arm on the same side. The anti-shock trolley has good anti-shock buffering, front-back movement of the wheels in the buffering process is avoided, and the stability of the trolley is improved.

Description

Technical Field

[0001] The utility model relates to a tension spring shock-absorbing mechanism for a mobile trolley, belonging to the technical field of inspection robots. Background Art

[0002] The wheeled inspection robot can replace or assist humans in inspection work. It accurately executes and docks at designated locations according to path planning and work requirements, provides infrared temperature measurement, meter reading recording and abnormal status alarm functions for inspection equipment, and realizes background functions such as real-time uploading of inspection data, information display and report generation. It has the characteristics of high inspection efficiency and strong reliability.

[0003] At present, the mobile trolley adopts a compression spring shock-absorbing mechanism to achieve the effect of earthquake resistance. The compression spring shock-absorbing mechanism includes a base assembly, which is hinged to one end of a large swing arm assembly, and the other end of the large swing arm assembly is hinged to a small swing arm, and a wheel hub motor is arranged on the small swing arm; the base assembly includes a base body, a first positioning shaft hole is provided on the side of the base body, and an annular compression spring placement groove is provided on the side of the base body, and the compression spring placement groove is arranged on the periphery of the first positioning shaft hole, and a plurality of circumferentially evenly distributed partition blocks are arranged in the compression spring placement groove, and a shock-absorbing compression spring group is respectively arranged between two adjacent partition blocks. However, the wheel is easy to move forward and backward during the buffering process, resulting in poor stability of the mobile trolley. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tension spring shock absorbing mechanism for a mobile trolley in view of the above-mentioned prior art, which has good anti-vibration buffering, prevents the wheels from moving back and forth during the buffering process, and improves the stability of the trolley.

[0005] The technical solution adopted by the utility model to solve the above-mentioned problems is: a tension spring shock-absorbing mechanism for a mobile trolley, comprising an upper swing arm unit and a lower swing arm unit, the upper swing arm unit and the lower swing arm unit are symmetrically arranged up and down and meshed with each other, the bottom of the upper swing arm unit is connected to the top of the lower swing arm unit through a middle pin assembly; a mounting base is arranged on the upper swing arm unit, and a hub motor is arranged on the lower swing arm unit; the upper swing arm unit comprises two upper swing arms symmetrically arranged on the left and right, the top ends of the upper swing arms are meshed with each other, and an upper tension spring is arranged between the bottoms of the two upper swing arms; the lower swing arm unit comprises two lower swing arms symmetrically arranged on the left and right, a lower tension spring is arranged between the tops of the two lower swing arms, the upper tension spring and the lower tension spring are arranged in parallel, and the bottoms of the two lower swing arms are meshed with each other; the bottom of the upper swing arm and the top of the lower swing arm on the same side are meshed with each other.

[0006] The outer surfaces of the two ends of the upper swing arm are respectively provided with upper swing arm teeth, and the opposite sides of the bottom of the upper swing arm are respectively provided with upper tension spring installation grooves, and the two ends of the upper tension spring are arranged in the upper tension spring installation grooves on the corresponding sides.

[0007] The outer surfaces of the two ends of the lower swing arm are respectively provided with lower swing arm teeth, and the opposite sides of the top of the lower swing arm are respectively provided with lower tension spring installation grooves, and the two ends of the lower tension spring are arranged in the lower tension spring installation grooves on the corresponding sides.

[0008] The tops of the two upper swing arms are connected by an upper pin assembly; the bottoms of the two lower swing arms are connected by a lower pin assembly.

[0009] The upper pin assembly includes an upper pin plate, on which upper pin shafts are symmetrically arranged left and right, and the upper pin shafts correspond to the pin shaft holes at the tops of the two upper swing arms; the middle pin assembly includes a middle pin plate, on which two middle pin shafts are symmetrically arranged up and down, and the middle pin shafts correspond to the pin shaft holes at the bottom of the upper swing arm and the top of the lower swing arm; the lower pin assembly includes a lower pin plate, on which two lower pin shafts are symmetrically arranged left and right, and the lower pin shafts correspond to the pin shaft holes at the bottoms of the two lower swing arms.

[0010] Compared with the prior art, the utility model has the advantages of: a tension spring shock-absorbing mechanism for a mobile trolley, an upper tension spring is arranged between the bottom ends of the two upper swing arms, a lower tension spring is arranged between the top ends of the two lower swing arms, the tops of the two upper swing arms are meshed with each other, the bottoms of the two lower swing arms are meshed with each other, and the bottoms of the upper swing arms are meshed with the tops of the lower swing arms on the same side. When the upper swing arms and the lower swing arms swing, the upper tension springs and the lower tension springs are driven to expand and contract, thereby having good anti-seismic buffering for the frame, and avoiding the wheels from moving forward and backward during the buffering process, thereby improving the stability of the trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front three-dimensional schematic diagram of a tension spring shock absorbing mechanism for a mobile trolley according to an embodiment of the utility model;

[0012] Figure 2 for Figure 1 A three-dimensional schematic diagram of the back side of the device;

[0013] Figure 3 for Figure 1 Exploded diagram of

[0014] Figure 4 for Figure 1 Schematic diagram of the connection between the middle upper swing arm unit, the lower swing arm unit and the tension spring;

[0015] In the figure, 1 is a mounting base, 2 is an upper mounting plate, 3 is an upper swing arm, 4 is a middle mounting plate, 5 is a lower tension spring, 6 is a hub motor, 7 is a hub motor mounting plate, 8 is an upper tension spring, 9 is a lower swing arm, 10 is a middle pin plate, 11 is a lower pin plate, 12 is an embossed flange nut, 13 is an upper pin plate, 14 is an upper pin shaft, 15 is a middle pin shaft, and 16 is a lower pin shaft. DETAILED DESCRIPTION

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] like Figure 1 , 2 As shown in Figures 3 and 4, a tension spring shock absorbing mechanism for a mobile vehicle in this embodiment includes an upper swing arm unit and a lower swing arm unit, which are symmetrically arranged up and down, and the bottom of the upper swing arm unit is connected to the top of the lower swing arm unit by two middle pin assemblies. A mounting base 1 is arranged at the top of the upper swing arm unit, and the vehicle frame is fixed on the mounting base 1. A hub motor mounting plate 7 is arranged at the bottom of the lower swing arm unit, and the rotating shaft of the hub motor 6 passes through the hub motor mounting plate 7 and is fixed on the hub motor mounting plate 7 by an embossed flange nut 12. The upper swing arm unit includes two upper swing arms 3 arranged symmetrically on the left and right, and the outer surfaces of the two ends of the upper swing arms 3 are respectively provided with upper swing arm teeth, and the upper swing arm teeth at the tops of the two upper swing arms 3 are meshed, and the tops of the two upper swing arms 3 are connected by an upper pin assembly. Upper tension spring mounting grooves are respectively provided on the opposite sides of the bottoms of the two upper swing arms 3, and the two ends of the upper tension spring 8 are fixed in the upper tension spring mounting grooves on the corresponding sides. The lower swing arm unit includes two lower swing arms 9 arranged symmetrically on the left and right sides, and the outer surfaces of the two ends of the lower swing arms 9 are provided with lower swing arm teeth respectively, and the lower swing arm teeth at the top of the lower swing arm are respectively engaged with the upper swing arm teeth at the bottom of the upper swing arm 3 on the same side. The lower swing arm teeth at the bottom ends of the two lower swing arms 9 are engaged, and the bottoms of the two lower swing arms are connected by a lower pin assembly. Lower tension spring installation grooves are respectively provided on the opposite sides of the tops of the two lower swing arms 9, and the two ends of the lower tension spring 5 are fixed in the lower tension spring installation grooves on the corresponding sides, and the upper tension spring 8 is arranged in parallel with the lower tension spring 5.

[0018] The arcs corresponding to the upper swing arm teeth and the lower swing arm teeth are 90° respectively.

[0019] The tension of the upper tension spring and the lower tension spring is 0 to 266N respectively, and the tension range of the two tension springs is 0 to 532N. During use, the tension spring changes from no stress to maximum stress, and the meshing angle range between the two upper swing arm teeth, between the two lower swing arm teeth, and between the upper swing arm teeth and the lower swing arm teeth is 0 to 24.5°.

[0020] The upper pin assembly includes an upper pin plate 13, on which two upper pin shafts 14 are arranged symmetrically. Pin shaft holes are respectively provided at both ends of the upper swing arm 3 and the lower swing arm 9. The upper pin shafts 14 correspond to the pin shaft holes at the top of the two upper swing arms 3. The upper pin shafts are arranged in the pin shaft holes and connected through the upper mounting plate. Any middle pin assembly includes a middle pin plate 10, on which two middle pin shafts 15 are arranged symmetrically up and down. The middle pin shafts 15 correspond to the pin shaft holes at the bottom of the upper swing arm 3 and the top of the lower swing arm 9. The middle pin shafts are arranged in the pin shaft holes and connected through the middle mounting plate. The lower pin assembly includes a lower pin plate 11, on which two lower pin shafts 16 are arranged symmetrically. The lower pin shafts 16 correspond to the pin shaft holes at the bottom of the two lower swing arms 9. The lower pin shafts are arranged in the pin shaft holes and connected through the hub motor mounting plate.

[0021] An upper tension spring is provided between the two upper swing arms, a lower tension spring is provided between the two lower swing arms, the tops of the two upper swing arms are meshed with each other, the bottoms of the two lower swing arms are meshed with each other, and the bottoms of the upper swing arms are meshed with the tops of the lower swing arms on the same side. When the upper swing arms and the lower swing arms swing, the upper tension spring and the lower tension spring are driven to expand and contract, thereby having good anti-seismic buffering for the frame, avoiding the wheels from moving forward and backward during the buffering process, and improving the stability of the car.

[0022] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A tension spring shock absorbing mechanism for a mobile trolley, characterized in that: It includes an upper swing arm unit and a lower swing arm unit, which are symmetrically arranged up and down and meshed with each other, and the bottom of the upper swing arm unit is connected to the top of the lower swing arm unit through a middle pin assembly; a mounting base is arranged on the upper swing arm unit, and a hub motor is arranged on the lower swing arm unit; the upper swing arm unit includes two upper swing arms symmetrically arranged on the left and right, the top ends of the upper swing arms are meshed with each other, and an upper tension spring is arranged between the bottoms of the two upper swing arms; the lower swing arm unit includes two lower swing arms symmetrically arranged on the left and right, a lower tension spring is arranged between the tops of the two lower swing arms, the upper tension spring and the lower tension spring are arranged in parallel, and the bottoms of the two lower swing arms are meshed with each other; the bottom of the upper swing arm and the top of the lower swing arm on the same side are meshed with each other.

2. A tension spring shock absorbing mechanism for a mobile vehicle according to claim 1, characterized in that: The outer surfaces of the two ends of the upper swing arm are respectively provided with upper swing arm teeth, and the opposite sides of the bottom of the upper swing arm are respectively provided with upper tension spring installation grooves, and the two ends of the upper tension spring are arranged in the upper tension spring installation grooves on the corresponding sides.

3. The tension spring shock absorbing mechanism for a mobile vehicle according to claim 1, characterized in that: The outer surfaces of the two ends of the lower swing arm are respectively provided with lower swing arm teeth, and the opposite sides of the top of the lower swing arm are respectively provided with lower tension spring installation grooves, and the two ends of the lower tension spring are arranged in the lower tension spring installation grooves on the corresponding sides.

4. The tension spring shock absorbing mechanism for a mobile vehicle according to claim 1, characterized in that: The tops of the two upper swing arms are connected by an upper pin assembly; and the bottoms of the two lower swing arms are connected by a lower pin assembly.

5. The tension spring shock absorbing mechanism for a mobile vehicle according to claim 4, characterized in that: The upper pin assembly includes an upper pin plate, on which upper pin shafts are symmetrically arranged left and right, and the upper pin shafts correspond to the pin shaft holes at the tops of the two upper swing arms; the middle pin assembly includes a middle pin plate, on which two middle pin shafts are symmetrically arranged up and down, and the middle pin shafts correspond to the pin shaft holes at the bottom of the upper swing arm and the top of the lower swing arm; the lower pin assembly includes a lower pin plate, on which two lower pin shafts are symmetrically arranged left and right, and the lower pin shafts correspond to the pin shaft holes at the bottoms of the two lower swing arms.

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