Guide wheel lifting mechanism for floor grinding machine

Abstract

The guide wheel lifting mechanism comprises a guide wheel, a lifting mechanism body and a fixing support, the guide wheel is installed on the lifting mechanism body, the lifting mechanism body is hinged to the fixing support, the fixing support is fixedly installed on the floor grinding machine, the lifting mechanism body comprises a lifting frame and a driving device, and the driving device is hinged to the lifting frame. The lifting frame is quadrilateral, and the driving device acts on the opposite angles of the quadrilateral lifting frame. The guide wheel lifting mechanism is additionally arranged on the floor grinding machine, the structure is simple, and the grinding machine is helped to improve the maintenance convenience and the self-moving flexibility.

Description

Technical Field

[0001] The utility model relates to the technical field of grinders, and particularly relates to a guide wheel lifting mechanism for a floor grinder. Background Art

[0002] Floor grinders are mainly used for grinding the ground, and can effectively grind terrazzo, the surface layer of concrete, epoxy mortar layer and old epoxy floors, etc. The head part of the floor grinder is equipped with grinding discs, gear boxes, grinding motors and other mechanisms, which makes the head heavy. When it is necessary to replace the grinding discs, it is necessary to manually press the tail of the machine and use the lever principle to lift the head. This process is time-consuming and laborious; in addition, the floor grinder lacks the function of self-propelling and is not convenient to move within the site. Content of the Utility Model

[0003] Purpose of the utility model: In order to overcome the above deficiencies, the purpose of the utility model is to provide a guide wheel lifting mechanism for a floor grinder, which has a simple structure and reasonable design. The guide wheel lifting mechanism enables the head to be lifted with a smaller downward pressure, facilitating migration within the site.

[0004] Technical solution: In order to achieve the above purpose, the utility model provides a guide wheel lifting mechanism for a floor grinder, including: a guide wheel, a lifting mechanism and a fixed bracket. The guide wheel is installed on the lifting mechanism, the lifting mechanism is hinged to the fixed bracket, and the fixed bracket is fixedly installed on the floor grinder. The lifting mechanism includes a lifting frame and a driving device, and the driving device is used to drive the lifting frame.

[0005] In the guide wheel lifting mechanism of the utility model, the driving device acts on the lifting frame, and the lifting frame deforms to extend or retract the guide wheel. When the guide wheel extends, the head can be lifted, which is convenient for replacing the grinding discs and migrating the whole vehicle, and improves the operation efficiency.

[0006] Furthermore, the lifting frame is quadrilateral, including a hinge seat, two groups of connecting rods and a cantilever beam. The hinge seat and the cantilever beam are connected by two groups of connecting rods, and the two groups of connecting rods are arranged parallel to each other up and down. The hinge seat, the two groups of connecting rods and the cantilever beam form a quadrilateral lifting frame, and the driving device can make the quadrilateral frame contract or expand, so as to realize the retraction or lowering of the guide wheel.

[0007] Further, a set of rotation pin holes and locking pin holes are provided on the hinge seat; corresponding rotation hole positions, retraction hole positions, and extension hole positions are provided on the fixed bracket. The rotation pin holes and the rotation hole positions are rotationally connected through a pin shaft, and the locking pin holes can be respectively connected with the retraction hole positions and the extension hole positions through a pin. The rotation pin holes and the rotation hole positions are rotationally connected through a pin shaft, and the hinge seat and its upper components can rotate around the fixed bracket as a whole. When the floor grinder is working normally, rotate the hinge seat to align the locking pin hole with the retraction hole position and lock it with a pin, so that the guide wheel lifting mechanism is located above the machine head and will not affect the normal operation of the machine; when relocation or maintenance is required, rotate the hinge seat to align the locking pin hole with the extension hole position and lock it with a pin, and use the driving mechanism to extend the guide wheel.

[0008] Further, connecting shafts are provided at the top of the hinge seat and the bottom of the cantilever beam, and both ends of the driving device are rotatably connected to the two connecting shafts. Both ends of the driving device can rotate around the connecting shafts.

[0009] Further, the driving device includes a hydraulic motor and a hydraulic rod, and the hydraulic motor is connected to the hydraulic rod.

[0010] Further, a guide wheel mounting seat is provided at the bottom end of the cantilever beam, and the guide wheel is a universal wheel.

[0011] Furthermore, the guide wheel lifting mechanism is installed at the front end of the floor grinder.

[0012] From the above technical solutions, it can be seen that the present utility model has the following beneficial effects:

[0013] 1. A guide wheel lifting mechanism for a floor grinder provided by the present utility model can be retracted or extended through different hole positions, effectively combining the working mode of the floor grinder.

[0014] 2. By adding a guide wheel lifting mechanism at the machine head part of the present utility model, the machine head can be lifted to make the entire gearbox leave the ground with a relatively small downward pressure for easy replacement of the grinding disc. On the other hand, after the guide wheels are extended, the whole can move within the site by itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a guide wheel lifting mechanism for a floor grinder according to the present utility model;

[0016] Figure 2 is a schematic structural diagram of the fixed bracket in the present utility model;

[0017] Figure 3 is a schematic structural diagram of the hinge seat in the present utility model;

[0018] Figure 4It is an assembly schematic diagram of the guide wheel lifting mechanism and the floor grinder.

[0019] In the figure: 1 - guide wheel, 2 - fixed bracket, 2.1 - rotation hole position, 2.2 - retraction hole position, 2.3 - extension hole position, 3 - hinge seat, 3.1 - rotation pin hole, 3.2 - locking pin hole, 4 - connecting rod, 5 - cantilever beam, 6 - hydraulic motor, 7 - hydraulic rod. Specific implementation mode

[0020] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Embodiment 1:

[0022] As Figure 1 , Figure 4 shown, a guide wheel lifting mechanism for a floor grinder includes: a guide wheel 1, a lifting mechanism, and a fixed bracket 2. The guide wheel 1 is installed on the lifting mechanism, the lifting mechanism is hinged to the fixed bracket 2, the fixed bracket 2 is fixedly installed on the floor grinder, the lifting mechanism includes a lifting frame and a driving device, and the driving device is used to drive the lifting frame.

[0023] In this embodiment: The lifting frame is quadrilateral, including a hinge seat 3, two groups of connecting rods 4, and a cantilever beam 5. The hinge seat 3 and the cantilever beam 5 are connected by two groups of connecting rods 4, and the two groups of connecting rods 4 are arranged parallel up and down. Connecting shafts are provided at the top of the hinge seat 3 and the bottom of the cantilever beam 5, and the two ends of the driving device are respectively rotatably connected to the two connecting shafts. In addition, the lifting mechanism is not limited to a frame structure, and can also be a guide rail telescopic type or a structure in which a multi-stage telescopic arm and a multi-stage cantilever are driven by an oil cylinder, etc.

[0024] Embodiment 2:

[0025] As Figures 1 - 3 shown, a guide wheel lifting mechanism for a floor grinder includes: a guide wheel 1, a lifting mechanism, and a fixed bracket 2. The guide wheel 1 is installed on the lifting mechanism, the lifting mechanism is hinged to the fixed bracket 2, the fixed bracket 2 is fixedly installed on the floor grinder, the lifting mechanism includes a lifting frame and a driving device, and the driving device is used to drive the lifting frame.

[0026] In this embodiment, a set of rotation pin holes 3.1 and locking pin holes 3.2 are provided on the hinge seat 3; corresponding rotation hole positions 2.1, retraction hole positions 2.2, and extension hole positions 2.3 are provided on the fixed bracket 2; the rotation pin holes 3.1 and the rotation hole positions 2.1 are rotatably connected by a pin shaft, and the locking pin holes 3.2 can be respectively connected with the retraction hole positions 2.2 and the extension hole positions 2.3 by a plug pin. For the retraction or extension structure of the guide wheel lifting mechanism, a form of a hydraulic cylinder cooperating with a cantilever can also be adopted.

[0027] Example 3:

[0028] As Figure 1 shown, a guide wheel lifting mechanism for a floor grinding machine includes: a guide wheel 1, a lifting mechanism, and a fixed bracket 2. The guide wheel 1 is installed on the lifting mechanism, the lifting mechanism is hinged to the fixed bracket 2, the fixed bracket 2 is fixedly installed on the floor grinding machine, the lifting mechanism includes a lifting frame and a driving device, and the driving device is used to drive the lifting frame.

[0029] In this embodiment, the driving device includes a hydraulic motor 6 and a hydraulic rod 7, and the hydraulic motor 6 is connected to the hydraulic rod 7.

[0030] Example 4:

[0031] Please refer to again Figure 1 、 Figure 4 , a guide wheel lifting mechanism for a floor grinding machine includes: a guide wheel 1, a lifting mechanism, and a fixed bracket 2. The guide wheel 1 is installed on the lifting mechanism, the lifting mechanism is hinged to the fixed bracket 2, the fixed bracket 2 is fixedly installed on the floor grinding machine, the lifting mechanism includes a lifting frame and a driving device, and the driving device is used to drive the lifting frame.

[0032] In this embodiment, a guide wheel mounting seat is provided at the bottom end of the cantilever beam 5, and the guide wheel 1 is a universal wheel. The guide wheel lifting mechanism is installed at the front end of the floor grinding machine.

[0033] The present utility model discloses a guide wheel lifting mechanism for a floor grinding machine. When the floor grinding machine is operating, the locking pin hole 3.1 on the hinge seat 3 is aligned with the retraction hole position 2.2 on the fixed bracket 2 and locked by a pin. At this time, the entire guide wheel lifting mechanism is located above the gearbox; when it is necessary to replace the grinding disc under the gearbox, rotate the hinge seat 3 to align the locking pin hole 3.1 with the extension hole position 2.3 and lock it with a pin, turn on the hydraulic motor 6 to drive the hydraulic rod 7 to extend, the hydraulic rod 7 drives the guide wheel 1 to lower until the gearbox is lifted off the ground, and then the operator presses down the rear end of the grinding machine to raise the gearbox to the maintenance height. At the same time, after the guide wheel 1 extends, the whole machine can move by itself within the site.

[0034] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be regarded as the protection scope of the present utility model.

Claims

1. A guide wheel lifting mechanism for a floor grinding machine, comprising: A guide wheel (1), a lifting mechanism and a fixed bracket (2), characterized in that the guide wheel (1) is installed on the lifting mechanism, the lifting mechanism is hinged on the fixed bracket (2), the fixed bracket (2) is fixedly installed on the floor grinding machine, and the lifting mechanism includes a lifting frame and a driving device, and the driving device is used to drive the lifting frame.

2. The guide wheel lifting mechanism for a floor grinding machine according to claim 1, characterized in that: The lifting frame is a quadrilateral and comprises an articulated seat (3), two groups of connecting rods (4) and a cantilever beam (5). The articulated seat (3) and the cantilever beam (5) are connected via two groups of connecting rods (4). The two groups of connecting rods (4) are arranged in parallel up and down.

3. The guide wheel lifting mechanism for a floor grinding machine according to claim 2, characterized in that: A group of rotation pin holes (3.1) and locking pin holes (3.2) are provided on the hinge seat (3); and a rotation hole position (2.1), a retracting hole position (2.2) and a dispensing hole position (2.3) are correspondingly provided on the fixed bracket (2).

4. The guide wheel lifting mechanism for a floor grinding machine according to claim 3, characterized in that: The rotating pin hole (3.1) and the rotating hole position (2.1) are rotatably connected via a pin shaft, and the locking pin hole (3.2) can be respectively connected with the retracting hole position (2.2) and the discharging hole position (2.3) via a latch pin.

5. The guide wheel lifting mechanism for a floor grinding machine according to claim 2, characterized in that: The hinged seat (3) and the cantilever beam (5) are both provided with connecting shafts, and the two ends of the driving device are respectively rotatably connected to the two connecting shafts.

6. The guide wheel lifting mechanism for a floor grinding machine according to claim 1, characterized in that: The driving device comprises a hydraulic motor (6) and a hydraulic rod (7), and the hydraulic motor (6) is connected to the hydraulic rod (7).

7. The guide wheel lifting mechanism for a floor grinding machine according to claim 2, characterized in that: A guide wheel mounting seat is provided at the bottom end of the cantilever beam (5), and the guide wheel (1) is a universal wheel.

8. The guide wheel lifting mechanism for a floor grinding machine according to claim 1, characterized in that: The guide wheel lifting mechanism is installed at the front end of the floor grinding machine.

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