Machine head transition lifting device of floor grinding machine

Abstract

The utility model discloses a machine head transition lifting device of a floor grinding machine, the lifting device is arranged at the front end of a rack in the driving direction of the floor grinding machine and assists in lifting a machine head, and the lifting device comprises a fixed support, a connecting rod mechanism, a movable support and an auxiliary wheel; the fixing support is fixedly arranged at the front end of a machine head of the floor grinding machine, the connecting rod mechanism is hinged to the interior of the fixing support, and a hydraulic cylinder for providing power for the connecting rod mechanism is hinged to the fixing support. The power output end of the connecting rod mechanism is hinged to the movable support, and the connecting rod mechanism provides auxiliary pressing positioning for the front end of the machine head. Auxiliary wheels are rotationally connected to the bottom ends of the movable brackets; the lifting device can achieve automatic lifting of the machine head of the floor grinding machine, operation is easy and convenient, frequent disassembly and assembly are not needed, structural abrasion is avoided, and the structure is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of floor grinding, in particular to a head transfer lifting device of a floor grinding machine. Background Art

[0002] Floor grinders are mainly used for grinding the ground, mostly for grinding terrazzo, concrete surface, etc. The current floor grinder needs to be transferred to another grinding site after completing the processing of the current grinding path. In the prior art, a foldable (detachable) front wheel is generally installed in front of the machine head. The existing front wheel mode is manual or semi-automatic. The manual front wheel is to first lower the front wheel bracket and clamp it with a pin, and then manually rotate the screw to lift the front wheel; the semi-automatic front wheel is to first manually lower the front wheel bracket and clamp it with a pin, and remotely control the oil cylinder to lift the front wheel.

[0003] The defects of the prior art are: 1. The operation is cumbersome, there is a gap between the latch and the latch hole, and the hole and the latch are seriously worn after long-term use; 2. The structural strength is poor; due to the large amount of dust on site, the lead screw is easy to get stuck and needs to be lubricated frequently.

[0004] In summary, how to design a lifting device to solve the above-mentioned technical problems and to assist in lifting the head of the floor grinder to facilitate the transfer of the grinder has become a technical problem that needs to be urgently solved by people in this field. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a head transfer lifting device for a floor grinder, which can realize automatic lifting of the head of the floor grinder, is easy to operate and does not require frequent disassembly and assembly, avoids structural wear, and has a reliable structure.

[0006] A head transfer lifting device for a floor grinder, the lifting device is arranged at the front end of a frame in the travel direction of the floor grinder and assists in lifting the head, the lifting device comprises: a fixed bracket, a connecting rod mechanism, a movable bracket and an auxiliary wheel; the fixed bracket is fixedly arranged at the front end of the head of the floor grinder, the connecting rod mechanism is hingedly connected inside the fixed bracket, and a hydraulic cylinder providing power for the connecting rod mechanism is hingedly connected on the fixed bracket; the power output end of the connecting rod mechanism is hingedly connected to the movable bracket, and the connecting rod mechanism provides auxiliary downward positioning for the front end of the head; the bottom end of the movable bracket is rotatably connected to the auxiliary wheel;

[0007] Preferably, the connecting rod mechanism includes a rotating shaft, a main connecting rod and a secondary connecting rod, wherein the rotating shaft is rotatably connected to the fixed bracket, the main connecting rods are radially fixed at both ends of the rotating shaft, a plurality of sets of hanging ears connected to the power output ends of the hydraulic cylinder are symmetrically fixed on the rotating shaft, and an auxiliary supporting part is radially fixed in the middle of the rotating shaft; the other end of the main connecting rod is respectively hingedly connected to the middle of both sides of the movable bracket; the secondary connecting rod is symmetrically and hingedly connected to the two vertical side walls of the fixed bracket, and the other end of the secondary connecting rod is respectively hingedly connected to the upper sides of the movable bracket.

[0008] Preferably, the auxiliary supporting part includes a wheel frame and a positioning wheel, wherein one end of the wheel frame is radially fixed on the circumferential outer wall of the rotating shaft, and the other end of the wheel frame is rotatably connected to the positioning wheel; the wheel frame and the positioning wheel penetrate downwardly through the fixed bracket, and the positioning wheel rolls to support the front end upper surface of the machine head to limit the inclination angle of the front end of the machine head.

[0009] The advantages and technical effects of the utility model are:

[0010] The utility model discloses a head transfer lifting device for a floor grinding machine, which uses a fixed bracket as the main body support, and provides rotational power to the wheel frame and positioning wheel of the hanging ear, rotating shaft and auxiliary top support part through a hydraulic cylinder, and at the same time provides rotational power to the main connecting rods fixed at both ends of the rotating shaft, and the main connecting rod bears the gravity of the movable bracket and provides a hanging fulcrum for the movable bracket, and then the secondary connecting rod adjusts the swing amplitude of the movable bracket, and finally the movable bracket extends down to the bottom of the head of the floor grinding machine, and the auxiliary wheel is used as the wheel support in front of the head to lift the horizontal height of the head; in addition, since the head and the existing frame of the floor grinding machine are connected for inclination adjustment, dust will accumulate on the head after long-term use, reducing the degree of lubrication of the hinged assembly of the head and the existing frame, the utility model designs an auxiliary top support part, which drives the positioning wheel to press down the upper surface of the head through the rotating shaft to ensure that after the head is raised, the bottom surface of the head is flush with the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model (the hydraulic cylinder is not shown);

[0012] Figure 2 It is a top view of the utility model;

[0013] Figure 3 It is a schematic diagram of the storage of the lifting device in the utility model in a non-working state;

[0014] Figure 4 It is a schematic diagram of the transfer support of the lifting device in the working state of the utility model (partial cross-section);

[0015] In the figure: 1-machine head; 2-existing frame; 3-fixed bracket; 4-rotating shaft; 5-auxiliary connecting rod; 6-main connecting rod; 7-movable bracket; 8-auxiliary wheel; 9-hanging ear; 10-positioning wheel; 11-wheel frame; 12-hydraulic cylinder. DETAILED DESCRIPTION

[0016] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with the accompanying drawings. It should be noted that the embodiments are descriptive, not restrictive, and the protection scope of the utility model cannot be limited thereby.

[0017] A lifting device for the head of a floor grinder, which is arranged at the front end of a frame in the travel direction of the floor grinder and assists in lifting the head 1, and comprises: a fixed bracket 3, a connecting rod mechanism, a movable bracket 7 and an auxiliary wheel 8; the fixed bracket is fixed at the front end of the head of the floor grinder, the connecting rod mechanism is hingedly connected inside the fixed bracket, and a hydraulic cylinder 12 for providing power to the connecting rod mechanism is hingedly connected on the fixed bracket; the power output end of the connecting rod mechanism is hingedly connected to the movable bracket, and the connecting rod mechanism provides auxiliary downward positioning for the front end of the head; the bottom end of the movable bracket is rotatably connected to the auxiliary wheel;

[0018] Preferably, the connecting rod mechanism includes a rotating shaft 4, a main connecting rod 6 and a secondary connecting rod 5, wherein the rotating shaft is rotatably connected to the fixed bracket, the main connecting rods are radially fixed at both ends of the rotating shaft, a plurality of sets of hanging ears 9 connected to the power output ends of the hydraulic cylinder are symmetrically fixed on the rotating shaft, and an auxiliary supporting part is radially fixed in the middle of the rotating shaft; the other end of the main connecting rod is respectively hingedly connected to the middle of both sides of the movable bracket; the secondary connecting rod is symmetrically and hingedly connected to the two vertical side walls of the fixed bracket, and the other end of the secondary connecting rod is respectively hingedly connected to the upper sides of the movable bracket.

[0019] Preferably, the auxiliary supporting part includes a wheel frame 11 and a positioning wheel 10, wherein one end of the wheel frame is radially fixed on the circumferential outer wall of the rotating shaft, and the other end of the wheel frame is rotatably connected to the positioning wheel; the wheel frame and the positioning wheel penetrate downwardly through the fixed bracket, and the positioning wheel rolls to support the front end upper surface of the machine head to limit the inclination angle of the front end of the machine head.

[0020] In addition, the preferred articulation method of the main connecting rod and the auxiliary connecting rod at both ends of the utility model is a pin connection with a sleeve in the prior art, which can reduce friction and extend the service life.

[0021] In order to more clearly illustrate the specific implementation of the utility model, an embodiment is provided below:

[0022] like Figure 1As shown, the head of the existing floor grinder is installed on the existing frame 2 for tilt adjustment or lifting adjustment. When the front end of the head is lifted, the existing frame wheels on both sides of the rear end of the head cooperate with the auxiliary wheels of the utility model to realize the three-point wheel support after the head is lifted, which is convenient for the transfer and transportation of the floor grinder. It should be noted that in the process of the auxiliary wheels of the lifting device protruding and supporting under the head, the whole head will flip backward with the existing frame wheels as the axis. During the flipping process, the head should always remain level with the ground. However, due to the invasion of dust particles and the like into the bearing connection position between the head and the existing frame, the head tilt adjustment is relatively "blocked". Therefore, when the hydraulic cylinder drives the rotating shaft to rotate, the rotating shaft drives the fixed bracket to extend forward and protrude through the main connecting rod and the auxiliary connecting rod on the one hand, and the wheel frame and positioning wheel on the rotating shaft assist in pressing down the top surface of the front of the head to ensure that the head is flush with the ground and prevent the head from tilting and hitting the ground during the transfer process.

[0023] Finally, all the undescribed parts of the present invention adopt mature products and mature technical means in the prior art.

[0024] The method disclosed and proposed by the utility model can be realized by those skilled in the art by referring to the content of this article and appropriately changing the conditions, routes and other links. Although the method and preparation technology of the utility model have been described by preferred embodiments, relevant technical personnel can obviously modify or recombine the method and technical route of this article without departing from the content, spirit and scope of the utility model to achieve the final preparation technology. It is particularly important to point out that all similar substitutions and modifications are obvious to those skilled in the art, and they are all deemed to be included in the spirit, scope and content of the utility model. And it should be understood that for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all these improvements and changes should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A head transfer lifting device for a floor grinding machine, characterized in that: The lifting device is arranged at the front end of the frame in the travel direction of the floor grinder and assists in lifting the head of the machine. The lifting device includes: a fixed bracket, a connecting rod mechanism, a movable bracket and an auxiliary wheel; the fixed bracket is fixedly arranged at the front end of the head of the floor grinder, the connecting rod mechanism is hingedly connected inside the fixed bracket, and a hydraulic cylinder that provides power for the connecting rod mechanism is hingedly connected on the fixed bracket; the power output end of the connecting rod mechanism is hingedly connected to the movable bracket, and the connecting rod mechanism provides auxiliary downward positioning for the front end of the head; the bottom end of the movable bracket is rotatably connected to the auxiliary wheel.

2. The head transfer lifting device of a floor grinding machine according to claim 1 is characterized in that: The connecting rod mechanism includes a rotating shaft, a main connecting rod and a secondary connecting rod, wherein the rotating shaft is rotatably connected to the fixed bracket, the main connecting rods are radially fixed at both ends of the rotating shaft, a plurality of sets of hanging ears connected to the power output ends of the hydraulic cylinder are symmetrically fixed on the rotating shaft, and an auxiliary supporting part is radially fixed in the middle of the rotating shaft; the other end of the main connecting rod is respectively hingedly connected to the middle of both sides of the movable bracket; the secondary connecting rod is symmetrically and hingedly connected to the two vertical side walls of the fixed bracket, and the other end of the secondary connecting rod is respectively hingedly connected to the upper two sides of the movable bracket.

3. The head transfer lifting device of a floor grinding machine according to claim 2 is characterized in that: The auxiliary supporting part includes a wheel frame and a positioning wheel, wherein one end of the wheel frame is radially fixed on the circumferential outer wall of the rotating shaft, and the other end of the wheel frame is rotatably connected to the positioning wheel; the wheel frame and the positioning wheel penetrate downwardly through the fixed bracket, and the positioning wheel rolls to support the front end upper surface of the machine head to limit the inclination angle of the front end of the machine head.

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