A handle steering device for a crystal surface maintenance robot

Abstract

This utility model provides a steering device for a crystal surface maintenance robot handle, including a handle frame, a rotating shaft, a potentiometer, a coupling, a horizontal shaft, and a tension spring. The upper end of the rotating shaft is connected to the handle frame, and the lower end of the rotating shaft is rotatably disposed inside the base. The potentiometer is fixed inside the base. The two ends of the coupling are respectively connected to the lower end of the rotating shaft and the potentiometer. The horizontal shaft passes through the rotating shaft. The tension spring connects the two ends of the rotating shaft to the base. Through the tension spring, the handle frame and the rotating shaft can automatically reset after the operator releases the rotation force.

Description

Technical Field

[0001] This utility model relates to the field of crystal surface maintenance robot technology, and in particular to a handle steering device for a crystal surface maintenance robot. Background Technology

[0002] Crystallization maintenance is an important process for stone surface maintenance. Its core lies in forming a dense, wear-resistant crystalline layer on the stone surface through a combination of mechanical friction and chemical reaction. Traditional crystallization maintenance robots are usually operated manually or by semi-automated equipment, with steering control being a key factor affecting the robot's operational accuracy and efficiency.

[0003] Currently, some crystal surface maintenance robots use mechanical handles for steering control, such as a scheme combining a rotating shaft and a potentiometer (e.g., the measuring device disclosed in patent document CN110953983A). In this scheme, the potentiometer and the rotating shaft are coaxially connected. When the operator rotates the handle, the rotating shaft drives the potentiometer to rotate, causing its resistance value to change. The rotation angle of the rotating shaft is then calculated based on the change in resistance, and the wheels are controlled to turn at the corresponding angle accordingly.

[0004] After the operator completes the steering operation and releases the handle, the handle and pivot cannot automatically return to their initial positions and the operator needs to manually reset them. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a handle steering device for a crystal surface maintenance robot that can automatically reset.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A handle steering device for a crystal surface curing robot includes:

[0008] Handle rack;

[0009] A rotating shaft, the upper end of which is connected to the handle frame, and the lower end of which is rotatably disposed inside the base;

[0010] A potentiometer, which is fixed inside the base;

[0011] A coupling, the two ends of which are respectively connected to the lower end of the rotating shaft and the potentiometer;

[0012] A horizontal axis, through which the rotating shaft passes;

[0013] A tension spring is provided, with both ends of the rotating shaft connected to the base.

[0014] In a preferred embodiment, the two tension springs are disposed on opposite sides of the rotating shaft.

[0015] In a preferred embodiment, the horizontal axis is perpendicular to the rotating axis.

[0016] As a preferred embodiment, it also includes:

[0017] A limiting rod is provided on the base, and the height of the upper surface of the limiting rod is higher than the height of the horizontal axis.

[0018] In a preferred embodiment, the base includes:

[0019] support frame;

[0020] An upper base plate is disposed on the upper surface of the support frame;

[0021] The potentiometer is fixed to the upper base plate.

[0022] In a preferred embodiment, the base further includes:

[0023] The lower base plate is disposed on the lower surface of the support frame;

[0024] A reinforcing rib connects the support frame and the lower base plate.

[0025] As a preferred embodiment, it also includes:

[0026] A bearing housing, which is fixed above the upper base plate;

[0027] The lower end of the rotating shaft is fitted into the bearing housing, and the coupling is located between the bearing housing and the upper base plate.

[0028] In a preferred embodiment, the upper base plate is provided with a plurality of support columns, and the bearing seat is fixed on the support columns.

[0029] Compared with existing technologies, this technical solution has the following advantages:

[0030] With the tension spring in place, the handle and pivot can automatically reset after the operator releases the turning force, preparing for the next turning operation. Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of the handle steering device of the crystal surface maintenance robot described in this utility model;

[0032] Figure 2 This is a schematic diagram of the handle steering device of the crystal surface maintenance robot described in this utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the base described in this utility model.

[0034] In the diagram: 1 Handle bracket, 2 Rotary shaft, 3 Horizontal shaft retaining ring, 4 Horizontal shaft, 5 Bearing seat, 6 Rotary shaft retaining ring, 7 Tension spring, 8 Coupling, 9 Potentiometer, 10 Base, 10a Upper base plate, 10a1 Potentiometer mounting hole, 10a2 Potentiometer fixing hole, 10b Support frame, 10c Reinforcing rib, 10d Lower base plate, 11 Handle bracket fixing screw, 12 Bearing seat fixing screw, 13 Potentiometer fixing screw, 14 Limiting rod, 15 Support column, 15a Bearing fixing hole. Detailed Implementation

[0035] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0036] Please refer to Figure 1 and Figure 2 An embodiment of this utility model provides a handle steering device for a crystal surface maintenance robot, comprising:

[0037] Handle 1;

[0038] A rotating shaft 2, the upper end of which is connected to the handle frame 1, and the lower end of which is rotatably disposed inside the base 10;

[0039] Potentiometer 9, which is fixed inside the base 10;

[0040] Coupling 8, the two ends of which are respectively connected to the lower end of the rotating shaft 2 and the potentiometer 9;

[0041] Horizontal axis 4, through which the rotating shaft 2 passes;

[0042] The tension spring 7 is connected between the two ends of the rotating shaft 2 and the base 10.

[0043] When the operator needs to steer the crystal surface maintenance robot, they grasp the handle 1 and apply rotational force. Since the handle 1 is fixedly connected to the upper end of the rotating shaft 2, the shaft 2 will rotate around its own axis following the handle 1. The lower end of the rotating shaft 2 is connected to a potentiometer 9 via a coupling 8; therefore, the rotation of the shaft 2 will cause the potentiometer 9 to rotate synchronously. The potentiometer 9 changes its resistance value according to its rotation angle, and this resistance change signal is transmitted to the control board of the crystal surface maintenance robot through wires. Based on the received signal from the potentiometer 9, the control board calculates and processes it, then sends corresponding control commands to the drive motors of the wheels, driving the wheels to turn at the corresponding angle, thereby realizing the steering operation of the crystal surface maintenance robot.

[0044] When the operator releases the rotational force on the handlebar 1, the rotating shaft 2 is subjected to a tension force opposite to the direction of rotation under the action of the tension spring 7. When the rotational force disappears, the tension spring 7 generates a restoring force, causing the rotating shaft 2 to rotate in the opposite direction around its own axis until it returns to its initial position. The reset of the rotating shaft 2 also causes the handlebar 1 to return to its initial position, thus realizing the automatic reset function of the handlebar 1 and preparing it for the next steering operation.

[0045] like Figures 1 to 3 As shown, the base 10 can be fixed to the front end of the robot chassis by screws or other means. The base 10 is used to support the rotating shaft 2 and the potentiometer 9, etc.

[0046] The base 10 includes:

[0047] Frame 10b;

[0048] Upper base plate 10a, the upper base plate 10a is disposed on the upper surface of the support frame 10b;

[0049] The lower base plate 10d is disposed on the lower surface of the support 10b.

[0050] The lower base plate 10d has holes for screws to pass through, so as to abut and fix the lower base plate 10d to the robot chassis. The upper base plate 10a is used to arrange the potentiometer 9, etc.

[0051] refer to Figure 2 and Figure 3 The base 10 further includes:

[0052] A reinforcing rib 10c connects the support frame 10b and the lower base plate 10d.

[0053] By setting the reinforcing ribs 10c, the structural strength and stable support of the base 10 are improved.

[0054] like Figure 1 and Figure 3 As shown, the upper base plate 10a has potentiometer mounting holes 10a1 and potentiometer fixing holes 10a2. The potentiometer mounting holes 10a1 are located at the center of the upper base plate 10a, and there are multiple potentiometer fixing holes 10a2 surrounding the potentiometer mounting holes 10a1. The lower end of the potentiometer 9 is inserted into the potentiometer mounting hole 10a1, and the fixing holes and potentiometer fixing holes 10a2 on the potentiometer 9 are aligned one by one. Then, the aligned fixing holes and potentiometer fixing holes 10a2 are connected by potentiometer fixing screws 13 to complete the installation and fixing of the potentiometer 9 on the upper base plate 10a. The upper end of the potentiometer 9 is exposed above the upper base plate 10a for connection with the coupling 8.

[0055] refer to Figure 1 The support frame 10b has a hollow structure, and wiring can be arranged inside it. In this embodiment, the lower end of the potentiometer 9 is connected to the control board of the crystal surface curing robot via a wire, and the wire can be routed inside the support frame 10b.

[0056] like Figure 1 and Figure 2 As shown, the handle steering device of the crystal surface maintenance robot further includes:

[0057] Bearing seat 5, the bearing seat 5 is fixed above the upper base plate 10a;

[0058] The lower end of the rotating shaft 2 is sleeved in the bearing seat 5, and the coupling 8 is located between the bearing seat 5 and the upper base plate 10a.

[0059] The lower end of the rotating shaft 2 is fitted into the bearing seat 5, and a bearing is provided between the lower end of the rotating shaft 2 and the bearing seat 5 to make the rotation of the rotating shaft 2 more stable. The two ends of the bearing abut against a step on the rotating shaft 2 and a rotating shaft retaining spring 6, respectively, and the rotating shaft retaining spring 6 is engaged with the outer wall of the rotating shaft 2.

[0060] refer to Figure 2 and Figure 3 The upper base plate 10a is provided with a plurality of support columns 15, and the bearing seat 5 is fixed on the support columns 15. The upper surface of the support column 15 is provided with a bearing fixing hole 15a, through which the bearing seat fixing screw 12 passes and is screwed into the bearing fixing hole 15a to fix the bearing seat 5 on the support column 15, so that a gap is maintained between the bearing seat 5 and the upper base plate 10a, that is, the coupling 8 is arranged in the gap.

[0061] The number of the support columns 15 is four, and the four support columns 15 are evenly arranged on the upper base plate 10a to improve the stability of the support base 5.

[0062] The lower end of the rotating shaft 2 is connected to the coupling 8, and the upper end of the potentiometer 9 is connected to the coupling 8, which ensures that the rotation of the rotating shaft 2 is accurately transmitted to the potentiometer 9.

[0063] like Figure 1 and Figure 2 As shown, the horizontal shaft 4 passes through the rotating shaft 2, and the rotating shaft 2 is perpendicular to the horizontal shaft 4. The rotating shaft 2 and the horizontal shaft 4 can be fixed by sleeved two horizontal shaft retaining rings 3 on the horizontal shaft 4, with the rotating shaft 2 located between the two horizontal shaft retaining rings 3.

[0064] The horizontal shaft 4 is located between the bearing seat 5 and the handle frame 1, and the two ends of the horizontal shaft 4 are respectively located on both sides of the rotating shaft 2.

[0065] Two tension springs 7 are respectively disposed on both sides of the rotating shaft 2, and their function is to provide tension for the rotating shaft 2 to automatically reset. One end of the tension spring 7 is hooked into the annular grooves at both ends of the rotating shaft 2, and the other end is hooked onto the upper base plate 10a.

[0066] In the initial state of the rotating shaft 2, the tension springs 7 located on both sides of the rotating shaft 2 are in a vertical state.

[0067] like Figure 2 and Figure 3 As shown, the handle steering device of the crystal surface maintenance robot further includes:

[0068] A limiting rod 14 is disposed on the base 10, and the height of the upper surface of the limiting rod 14 is higher than the height of the horizontal axis 4.

[0069] The limiting rod 14 can be fixed to the upper base plate 10a of the base 10 by screws or other means. When the horizontal shaft 4 stops on the limiting rod 14, it prevents the limiting rod 14 from continuing to rotate, that is, the limiting rod 14 is used to limit the rotation angle of the rotating shaft 2.

[0070] For example, two limiting rods 14 are respectively provided on the left and right sides of the horizontal axis 4. When the horizontal axis 4 rotates with the rotating shaft 2 and comes into contact with the right limiting rod 14, the horizontal axis 4 will be blocked by the limiting rod 14 because the height of the upper surface of the limiting rod 14 is higher than the height of the horizontal axis 4, and thus cannot continue to rotate to the right. Similarly, when the horizontal axis 4 comes into contact with the left limiting rod 14, the left limiting rod 14 will prevent the horizontal axis 4 from continuing to rotate to the left. The horizontal axis 4 can only rotate between the left and right limiting rods 14, and its rotation angle is ±45°.

[0071] The horizontal axis 4 has two left-right locating limit rods 14 at each end along its length. Specifically, there is one limit rod 14 at each end of the left side and one limit rod 14 at each end of the right side, for a total of four limit rods 14. This layout design ensures that both ends of the horizontal axis 4 are blocked by the limit rods 14 during rotation, thus guaranteeing the stability and reliability of the locating effect.

[0072] like Figure 1 and Figure 2 As shown, the handle frame 1 is linear, and the upper end of the rotating shaft 2 is connected to the middle position along the length of the handle frame 1. The two can be fixed by means of handle frame fixing screws 11, etc. The operator can hold the handle frame 1 on both sides along its length to rotate the handle frame 1.

[0073] In summary, thanks to the tension spring 7, the handle frame 1 and the rotating shaft 2 can automatically reset after the operator releases the rotational force, preparing for the next steering operation. The limiting rod 14 effectively limits the rotation angle of the rotating shaft 2.

[0074] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A crystal face curing robot handle turning device, characterized by, include: Handle (1); A rotating shaft (2) is connected at its upper end to the handle frame (1) and at its lower end is rotatably disposed inside the base (10). Potentiometer (9), the potentiometer (9) is fixed inside the base (10); Coupling (8), the two ends of which are respectively connected to the lower end of the rotating shaft (2) and the potentiometer (9); A horizontal axis (4) is inserted through the rotating shaft (2); The tension spring (7) is connected between the two ends of the rotating shaft (2) and the base (10).

2. The handle steering device for the crystal surface maintenance robot as described in claim 1, characterized in that, The two tension springs (7) are respectively located on both sides of the rotating shaft (2).

3. The handle steering device for the crystal surface maintenance robot as described in claim 1, characterized in that, The horizontal axis (4) is perpendicular to the rotating axis (2).

4. The handle steering device for the crystal surface maintenance robot as described in claim 1, characterized in that, Also includes: A limiting rod (14) is provided on the base (10), and the height of the upper surface of the limiting rod (14) is higher than the height of the horizontal axis (4).

5. The handle steering device for the crystal surface maintenance robot as described in claim 1, characterized in that, The base (10) includes: Support frame (10b); An upper base plate (10a) is disposed on the upper surface of the support frame (10b); The potentiometer (9) is fixed on the upper base plate (10a).

6. The handle steering device for the crystal surface maintenance robot as described in claim 5, characterized in that, The base (10) also includes: A lower base plate (10d) is disposed on the lower surface of the support frame (10b); A reinforcing rib (10c) connects the support frame (10b) and the lower base plate (10d).

7. The handle steering device for the crystal surface maintenance robot as described in claim 5, characterized in that, Also includes: Bearing seat (5), the bearing seat (5) is fixed above the upper base plate (10a); The lower end of the rotating shaft (2) is sleeved in the bearing seat (5), and the coupling (8) is located between the bearing seat (5) and the upper base plate (10a).

8. The handle steering device for the crystal surface maintenance robot as described in claim 7, characterized in that, The upper base plate (10a) is provided with a plurality of support columns (15), and the bearing seat (5) is fixed on the support columns (15).

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