Damping mechanism suitable for moving trolley

Abstract

The utility model relates to a damping mechanism suitable 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, 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 at the top of the upper swing arm unit; a pressure spring assembly is arranged in the upper swing arm unit, and the upper swing arm unit is connected with the pressure spring assembly through an upper pin assembly; a hub motor is arranged on the lower swing arm unit; the upper swing arm unit comprises two upper swing arms, the top ends of the two upper swing arms are meshed with each other, two side surfaces of the tops of the upper swing arms are respectively provided with a pressure spring storage groove group, the pressure spring assembly comprises a first pressure spring group and a second pressure spring group, and the first pressure spring group and the second pressure spring group are respectively arranged in the pressure spring storage groove groups; the lower swing arm unit comprises two lower swing arms. The anti-seismic buffer structure has good anti-seismic buffering performance, the elastic piece can be prevented from being exposed outside, and the service life of the elastic piece is prolonged; and the occupied space is reduced.

Description

Technical Field

[0001] The utility model relates to a shock absorbing mechanism suitable for a mobile vehicle, 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] For example, a Chinese utility model provides a ground wheeled inspection robot with good shock absorption effect, and its announcement number is: CN219056392U, which includes a bottom plate, a base is arranged on the top of the bottom plate, grooves are provided on both sides of the bottom of the base, a spring is fixedly connected to the top of the inner cavity of the groove, a connecting column is fixedly connected to the bottom of the spring, the bottom of the connecting column penetrates the inner cavity of the groove and extends to the outside of the groove, the bottom of the connecting column is fixedly connected to the bottom plate, a mounting groove is provided at the bottom of the base, a damper is fixedly connected to the top of the inner cavity of the mounting groove, the bottom of the damper extends to the outside of the mounting groove, the bottom of the damper is fixedly connected to the mounting plate, the bottom of the mounting plate is fixedly connected to the bottom plate, the top of the base is fixedly connected to the body, and the top of the body is fixedly connected to the monitor. This patent has good anti-seismic buffering function through the coordinated use of the bottom plate, the base, the groove, the spring, the connecting column, the mounting groove, the damper, the mounting plate, the body and the monitor, and ensures the anti-seismic performance of the inspection robot during movement. However, the base occupies a large space underneath, resulting in a large overall size of the inspection robot, making it impossible to inspect small spaces. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a shock absorbing mechanism suitable for a mobile trolley in view of the above-mentioned prior art, which has good anti-vibration buffering, can avoid the elastic parts from being exposed to the outside and increase the service life of the elastic parts; and can reduce the occupied space and reduce the overall size of the mobile trolley.

[0005] The technical solution adopted by the utility model to solve the above problems is: a shock absorbing mechanism suitable for a mobile vehicle, 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; 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 top of the upper swing arm unit, and a vehicle frame is fixed on the mounting base; a compression spring assembly is arranged in the upper swing arm unit, and the upper swing arm unit is connected to the compression spring assembly through an upper pin assembly; A hub motor is provided; the upper swing arm unit comprises two upper swing arms which are symmetrically arranged on the left and right, the top ends of the two upper swing arms are meshed with each other, and compression spring storage groove groups are respectively provided on the two side surfaces of the top of the upper swing arms, and the compression spring assembly comprises a first compression spring group and a second compression spring group, one of the compression spring storage groove groups is provided with a first compression spring group, and the other compression spring storage groove group is provided with a second compression spring group; the lower swing arm unit comprises two lower swing arms which are symmetrically arranged on the left and right, the bottom ends of the two lower swing arms are meshed with each other, and the bottom end of the upper swing arm on the same side is meshed with the top end of the lower swing arm.

[0006] The outer surfaces at both ends of the upper swing arm are respectively provided with upper swing arm teeth, and the outer surfaces at both ends of the lower swing arm are respectively provided with lower swing arm teeth.

[0007] The compression spring storage groove groups respectively include a plurality of compression spring storage grooves evenly distributed in the circumferential direction; the first compression spring group includes a plurality of first compression springs, and the second compression spring group includes a plurality of second compression springs, and the first compression springs and the second compression springs are arranged in the corresponding compression spring storage grooves.

[0008] The upper pin assembly includes an upper cover plate and an upper sealing plate, and the upper cover plate and the upper sealing plate are arranged on both sides of the upper swing arm unit; two upper cover plate positioning columns symmetrically arranged on the left and right are arranged on the side of the upper cover plate, and a plurality of upper cover plate compression spring pressure blocks uniformly distributed in an annular direction are respectively arranged on the outer periphery of the upper cover plate positioning columns; two groups of upper cover plate compression spring pressure block groups are arranged on the side of the upper sealing plate, and any of the upper cover plate compression spring pressure block groups respectively includes a plurality of upper cover plate compression spring pressure blocks uniformly distributed in an annular direction, and the upper cover plate compression spring pressure blocks correspond to the upper cover plate compression spring pressure blocks, and the upper cover plate compression spring pressure blocks are respectively arranged in the corresponding compression spring storage grooves and abut against one end of the first compression spring; the upper cover plate compression spring pressure blocks are respectively arranged in the compression spring storage grooves on the other side and abut against one end of the second compression spring.

[0009] The center pin assembly includes a center cover plate, on which two center pin shafts symmetrically arranged up and down are arranged. The center pin shafts pass through the pin shaft holes at the bottom of the upper swing arm and the top of the lower swing arm and are connected through the center sealing plate.

[0010] The bottoms of the two lower swing arms are connected by a lower pin assembly, which includes a lower cover plate, on which two lower pin shafts symmetrically arranged are arranged. The lower pin shafts pass through the pin shaft holes at the bottoms of the two lower swing arms and are connected through the hub motor mounting plate.

[0011] Compared with the prior art, the utility model has the following advantages: a shock absorbing mechanism suitable for a mobile trolley, the tops of the two upper swing arms are meshed, the bottoms of the two lower swing arms are meshed, 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 sealing plate compression spring block and the upper cover plate compression spring block are driven to compress the first compression spring and the second compression spring, thereby providing good anti-seismic buffering for the frame, preventing the wheels from moving forward and backward during the buffering process, and improving the stability of the trolley. The first compression spring and the second compression spring are arranged in the compression spring storage groove, which has a protective effect on the first compression spring and the second compression spring, thereby increasing the service life of the compression spring, reducing the occupied space, and reducing the overall size of the mobile trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front three-dimensional diagram of a shock absorbing mechanism suitable for a mobile vehicle according to an embodiment of the utility model;

[0013] Figure 2 A three-dimensional back view of a shock absorbing mechanism suitable for a mobile vehicle according to an embodiment of the utility model;

[0014] Figure 3 This is an exploded view of a shock absorbing mechanism suitable for a mobile vehicle according to an embodiment of the utility model;

[0015] Figure 4 The exploded view of the connection between the upper swing arm unit and the lower swing arm unit;

[0016] Figure 5 Schematic diagram of the upper cover;

[0017] Figure 6 Schematic diagram of the upper sealing plate;

[0018] Figure 7 Schematic diagram of the meshing of the upper swing arm and the lower swing arm;

[0019] In the figure, 1 is a mounting base, 2 is an upper cover plate, 2.1 is an upper cover plate compression spring block, 3 is a first compression spring, 4 is an upper swing arm, 4.1 is a compression spring storage groove, 5 is a second compression spring, 6 is an upper sealing plate, 6.1 is an upper sealing plate compression spring block, 7 is a hub motor, 8 is a hub motor mounting plate, 9 is a lower swing arm, 10 is a middle cover plate, 11 is a middle pin shaft, 12 is a lower cover plate, 13 is a lower pin shaft, and 14 is a middle sealing plate. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] like Figure 1 , 2As shown, in this embodiment, a shock absorbing mechanism suitable for a mobile vehicle 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 through a middle pin assembly. A mounting base 1 is provided on the top of the upper swing arm unit, and the vehicle frame is fixed on the mounting base 1. A compression spring assembly is provided in the upper swing arm unit, and the upper swing arm unit and the compression spring assembly are connected through an upper pin assembly. A hub motor 7 is provided on the lower swing arm unit. Figure 3 , 4 As shown in Figures 7 and 8, the upper swing arm unit includes two upper swing arms 4 that are symmetrically arranged on the left and right. The outer surfaces of both ends of the upper swing arms 4 have upper swing arm teeth respectively, and the tops of the two upper swing arms 4 are meshed with each other. The lower swing arm unit includes two lower swing arms 9 that are symmetrically arranged on the left and right. The outer surfaces of both ends of the lower swing arms 9 have lower swing arm teeth respectively, and the bottoms of the two lower swing arms 9 are meshed with each other; the bottom of the upper swing arm 4 and the top of the lower swing arm 9 on the same side are meshed with each other, that is, the upper swing arm unit is meshed with the lower swing arm unit. Three circumferentially evenly distributed compression spring placement grooves 4.1 are respectively provided on the two side surfaces of the top of the upper swing arm 4. The compression spring assembly includes a first compression spring group and a second compression spring group. The first compression spring group includes three first compression springs 3, and the second compression spring group includes three second compression springs 5. The first compression spring 3 is arranged in the three compression spring placement grooves 4.1 on the same side, and the second compression spring 5 is arranged in the three compression spring placement grooves 4.1 on the other side. As shown Figure 5 , 6 As shown, the upper pin assembly includes an upper cover plate 2 and an upper sealing plate 6, and the upper cover plate 2 and the upper sealing plate 6 are arranged on both sides of the upper swing arm unit. Two upper cover plate positioning columns arranged symmetrically on the left and right are arranged on the side of the upper cover plate 2, and three upper cover plate compression spring blocks 2.1 are arranged on the outer periphery of the upper cover plate positioning columns. Two groups of upper cover plate compression spring block groups are arranged on the side of the upper sealing plate 6, and any upper cover plate compression spring block group includes three upper cover plate compression spring blocks 6.1 evenly distributed in the annular direction, and the upper cover plate compression spring blocks 6.1 correspond to the upper cover plate compression spring blocks 2.1. The upper cover plate positioning columns pass through the top ends of the two upper swing arms 4, and the upper cover plate compression spring blocks 2.1 are respectively arranged in the corresponding compression spring storage grooves and against one end of the first compression spring; the upper cover plate compression spring blocks are respectively arranged in the compression spring storage grooves on the other side and against one end of the second compression spring. The upper sealing plate and the upper cover are fixedly connected by countersunk screws. When the upper swing arm and the lower swing arm are meshed and swung, the upper sealing plate compression spring block and the upper cover plate compression spring block are driven to compress the first compression spring and the second compression spring, thereby playing a buffering and shock absorbing role.

[0022] The arcs corresponding to the upper swing arm teeth and the lower swing arm teeth are 90° respectively.

[0023] During use, the compression 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 degrees.

[0024] The middle pin assembly includes a middle cover plate 10, on which two middle pin shafts 11 are arranged symmetrically from top to bottom. The middle pin shafts 11 correspond to the pin shaft holes at the bottom of the upper swing arm 4 and the top of the lower swing arm 9, that is, the middle pin shaft 11 is inserted into the pin shaft hole and connected through the middle sealing plate 14. The bottoms of the two lower swing arms are connected through the lower pin assembly, and the lower pin assembly includes a lower cover plate 12, on which two lower pin shafts 13 are arranged symmetrically from left to right, and the lower pin shafts 13 correspond to the pin shaft holes at the bottoms of the two lower swing arms 9, that is, the lower pin shafts 13 are arranged in the pin shaft holes and connected through the hub motor mounting plate 8.

[0025] The tops of the two upper swing arms are meshed, the bottoms of the two lower swing arms are meshed, 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 sealing plate compression spring block and the upper cover plate compression spring block are driven to compress the first compression spring and the second compression spring, thereby providing good anti-vibration buffering for the frame, preventing the wheels from moving forward and backward during the buffering process, and improving the stability of the trolley. The first compression spring and the second compression spring are arranged in the compression spring storage groove, which has a protective effect on the first compression spring and the second compression spring, prolongs the service life of the compression spring, reduces the occupied space, and reduces the overall size of the mobile trolley.

[0026] 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 shock absorbing mechanism suitable for a mobile vehicle, characterized in that: It comprises an upper swing arm unit and a lower swing arm unit, which are symmetrically arranged up and down; 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 top of the upper swing arm unit, and the vehicle frame is fixed on the mounting base; A compression spring assembly is provided in the upper swing arm unit, and the upper swing arm unit is connected to the compression spring assembly through an upper pin assembly; a hub motor is provided 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 two upper swing arms are meshed with each other, and compression spring storage groove groups are respectively provided on the two side surfaces of the top of the upper swing arms, and the compression spring assembly includes a first compression spring group and a second compression spring group, one of the compression spring storage groove groups is provided with a first compression spring group, and the other compression spring storage groove group is provided with a second compression spring group; the lower swing arm unit includes two lower swing arms symmetrically arranged on the left and right, the bottom ends of the two lower swing arms are meshed with each other, and the bottom end of the upper swing arm on the same side is meshed with the top end of the lower swing arm.

2. A shock absorbing mechanism suitable for a mobile vehicle according to claim 1, characterized in that: The outer surfaces at both ends of the upper swing arm are respectively provided with upper swing arm teeth, and the outer surfaces at both ends of the lower swing arm are respectively provided with lower swing arm teeth.

3. A shock absorbing mechanism suitable for a mobile vehicle according to claim 1, characterized in that: The compression spring storage groove groups respectively include a plurality of compression spring storage grooves evenly distributed in the circumferential direction; the first compression spring group includes a plurality of first compression springs, and the second compression spring group includes a plurality of second compression springs, and the first compression springs and the second compression springs are arranged in the corresponding compression spring storage grooves.

4. A shock absorbing mechanism suitable for a mobile vehicle according to claim 3, characterized in that: The upper pin assembly includes an upper cover plate and an upper sealing plate, and the upper cover plate and the upper sealing plate are arranged on both sides of the upper swing arm unit; two upper cover plate positioning columns symmetrically arranged on the left and right are arranged on the side of the upper cover plate, and a plurality of upper cover plate compression spring pressure blocks uniformly distributed in an annular direction are respectively arranged on the outer periphery of the upper cover plate positioning columns; two groups of upper cover plate compression spring pressure block groups are arranged on the side of the upper sealing plate, and any of the upper cover plate compression spring pressure block groups respectively includes a plurality of upper cover plate compression spring pressure blocks uniformly distributed in an annular direction, and the upper cover plate compression spring pressure blocks correspond to the upper cover plate compression spring pressure blocks, and the upper cover plate compression spring pressure blocks are respectively arranged in the corresponding compression spring storage grooves and abut against one end of the first compression spring; the upper cover plate compression spring pressure blocks are respectively arranged in the compression spring storage grooves on the other side and abut against one end of the second compression spring.

5. The shock absorbing mechanism suitable for a mobile vehicle according to claim 1, characterized in that: The center pin assembly includes a center cover plate, on which two center pin shafts symmetrically arranged up and down are arranged. The center pin shafts pass through the pin shaft holes at the bottom of the upper swing arm and the top of the lower swing arm and are connected through the center sealing plate.

6. The shock absorbing mechanism suitable for a mobile vehicle according to claim 1, characterized in that: The bottoms of the two lower swing arms are connected by a lower pin assembly, which includes a lower cover plate, on which two lower pin shafts symmetrically arranged are arranged. The lower pin shafts pass through the pin shaft holes at the bottoms of the two lower swing arms and are connected through the hub motor mounting plate.

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